mirror of
https://github.com/torvalds/linux.git
synced 2024-12-05 18:41:23 +00:00
6614a3c316
Lin, Yang Shi, Anshuman Khandual and Mike Rapoport - Some kmemleak fixes from Patrick Wang and Waiman Long - DAMON updates from SeongJae Park - memcg debug/visibility work from Roman Gushchin - vmalloc speedup from Uladzislau Rezki - more folio conversion work from Matthew Wilcox - enhancements for coherent device memory mapping from Alex Sierra - addition of shared pages tracking and CoW support for fsdax, from Shiyang Ruan - hugetlb optimizations from Mike Kravetz - Mel Gorman has contributed some pagealloc changes to improve latency and realtime behaviour. - mprotect soft-dirty checking has been improved by Peter Xu - Many other singleton patches all over the place -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCYuravgAKCRDdBJ7gKXxA jpqSAQDrXSdII+ht9kSHlaCVYjqRFQz/rRvURQrWQV74f6aeiAD+NHHeDPwZn11/ SPktqEUrF1pxnGQxqLh1kUFUhsVZQgE= =w/UH -----END PGP SIGNATURE----- Merge tag 'mm-stable-2022-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: "Most of the MM queue. A few things are still pending. Liam's maple tree rework didn't make it. This has resulted in a few other minor patch series being held over for next time. Multi-gen LRU still isn't merged as we were waiting for mapletree to stabilize. The current plan is to merge MGLRU into -mm soon and to later reintroduce mapletree, with a view to hopefully getting both into 6.1-rc1. Summary: - The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe Lin, Yang Shi, Anshuman Khandual and Mike Rapoport - Some kmemleak fixes from Patrick Wang and Waiman Long - DAMON updates from SeongJae Park - memcg debug/visibility work from Roman Gushchin - vmalloc speedup from Uladzislau Rezki - more folio conversion work from Matthew Wilcox - enhancements for coherent device memory mapping from Alex Sierra - addition of shared pages tracking and CoW support for fsdax, from Shiyang Ruan - hugetlb optimizations from Mike Kravetz - Mel Gorman has contributed some pagealloc changes to improve latency and realtime behaviour. - mprotect soft-dirty checking has been improved by Peter Xu - Many other singleton patches all over the place" [ XFS merge from hell as per Darrick Wong in https://lore.kernel.org/all/YshKnxb4VwXycPO8@magnolia/ ] * tag 'mm-stable-2022-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (282 commits) tools/testing/selftests/vm/hmm-tests.c: fix build mm: Kconfig: fix typo mm: memory-failure: convert to pr_fmt() mm: use is_zone_movable_page() helper hugetlbfs: fix inaccurate comment in hugetlbfs_statfs() hugetlbfs: cleanup some comments in inode.c hugetlbfs: remove unneeded header file hugetlbfs: remove unneeded hugetlbfs_ops forward declaration hugetlbfs: use helper macro SZ_1{K,M} mm: cleanup is_highmem() mm/hmm: add a test for cross device private faults selftests: add soft-dirty into run_vmtests.sh selftests: soft-dirty: add test for mprotect mm/mprotect: fix soft-dirty check in can_change_pte_writable() mm: memcontrol: fix potential oom_lock recursion deadlock mm/gup.c: fix formatting in check_and_migrate_movable_page() xfs: fail dax mount if reflink is enabled on a partition mm/memcontrol.c: remove the redundant updating of stats_flush_threshold userfaultfd: don't fail on unrecognized features hugetlb_cgroup: fix wrong hugetlb cgroup numa stat ...
2396 lines
60 KiB
C
2396 lines
60 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2000-2006 Silicon Graphics, Inc.
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* All Rights Reserved.
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*/
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#include "xfs.h"
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#include "xfs_shared.h"
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#include "xfs_format.h"
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#include "xfs_log_format.h"
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#include "xfs_trans_resv.h"
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#include "xfs_sb.h"
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#include "xfs_mount.h"
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#include "xfs_inode.h"
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#include "xfs_btree.h"
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#include "xfs_bmap.h"
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#include "xfs_alloc.h"
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#include "xfs_fsops.h"
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#include "xfs_trans.h"
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#include "xfs_buf_item.h"
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#include "xfs_log.h"
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#include "xfs_log_priv.h"
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#include "xfs_dir2.h"
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#include "xfs_extfree_item.h"
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#include "xfs_mru_cache.h"
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#include "xfs_inode_item.h"
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#include "xfs_icache.h"
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#include "xfs_trace.h"
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#include "xfs_icreate_item.h"
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#include "xfs_filestream.h"
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#include "xfs_quota.h"
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#include "xfs_sysfs.h"
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#include "xfs_ondisk.h"
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#include "xfs_rmap_item.h"
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#include "xfs_refcount_item.h"
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#include "xfs_bmap_item.h"
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#include "xfs_reflink.h"
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#include "xfs_pwork.h"
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#include "xfs_ag.h"
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#include "xfs_defer.h"
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#include "xfs_attr_item.h"
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#include "xfs_xattr.h"
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#include "xfs_iunlink_item.h"
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#include <linux/magic.h>
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#include <linux/fs_context.h>
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#include <linux/fs_parser.h>
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static const struct super_operations xfs_super_operations;
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static struct kset *xfs_kset; /* top-level xfs sysfs dir */
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#ifdef DEBUG
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static struct xfs_kobj xfs_dbg_kobj; /* global debug sysfs attrs */
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#endif
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#ifdef CONFIG_HOTPLUG_CPU
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static LIST_HEAD(xfs_mount_list);
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static DEFINE_SPINLOCK(xfs_mount_list_lock);
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static inline void xfs_mount_list_add(struct xfs_mount *mp)
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{
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spin_lock(&xfs_mount_list_lock);
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list_add(&mp->m_mount_list, &xfs_mount_list);
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spin_unlock(&xfs_mount_list_lock);
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}
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static inline void xfs_mount_list_del(struct xfs_mount *mp)
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{
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spin_lock(&xfs_mount_list_lock);
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list_del(&mp->m_mount_list);
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spin_unlock(&xfs_mount_list_lock);
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}
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#else /* !CONFIG_HOTPLUG_CPU */
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static inline void xfs_mount_list_add(struct xfs_mount *mp) {}
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static inline void xfs_mount_list_del(struct xfs_mount *mp) {}
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#endif
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enum xfs_dax_mode {
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XFS_DAX_INODE = 0,
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XFS_DAX_ALWAYS = 1,
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XFS_DAX_NEVER = 2,
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};
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static void
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xfs_mount_set_dax_mode(
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struct xfs_mount *mp,
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enum xfs_dax_mode mode)
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{
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switch (mode) {
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case XFS_DAX_INODE:
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mp->m_features &= ~(XFS_FEAT_DAX_ALWAYS | XFS_FEAT_DAX_NEVER);
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break;
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case XFS_DAX_ALWAYS:
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mp->m_features |= XFS_FEAT_DAX_ALWAYS;
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mp->m_features &= ~XFS_FEAT_DAX_NEVER;
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break;
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case XFS_DAX_NEVER:
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mp->m_features |= XFS_FEAT_DAX_NEVER;
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mp->m_features &= ~XFS_FEAT_DAX_ALWAYS;
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break;
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}
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}
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static const struct constant_table dax_param_enums[] = {
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{"inode", XFS_DAX_INODE },
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{"always", XFS_DAX_ALWAYS },
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{"never", XFS_DAX_NEVER },
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{}
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};
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/*
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* Table driven mount option parser.
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*/
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enum {
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Opt_logbufs, Opt_logbsize, Opt_logdev, Opt_rtdev,
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Opt_wsync, Opt_noalign, Opt_swalloc, Opt_sunit, Opt_swidth, Opt_nouuid,
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Opt_grpid, Opt_nogrpid, Opt_bsdgroups, Opt_sysvgroups,
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Opt_allocsize, Opt_norecovery, Opt_inode64, Opt_inode32, Opt_ikeep,
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Opt_noikeep, Opt_largeio, Opt_nolargeio, Opt_attr2, Opt_noattr2,
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Opt_filestreams, Opt_quota, Opt_noquota, Opt_usrquota, Opt_grpquota,
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Opt_prjquota, Opt_uquota, Opt_gquota, Opt_pquota,
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Opt_uqnoenforce, Opt_gqnoenforce, Opt_pqnoenforce, Opt_qnoenforce,
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Opt_discard, Opt_nodiscard, Opt_dax, Opt_dax_enum,
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};
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static const struct fs_parameter_spec xfs_fs_parameters[] = {
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fsparam_u32("logbufs", Opt_logbufs),
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fsparam_string("logbsize", Opt_logbsize),
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fsparam_string("logdev", Opt_logdev),
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fsparam_string("rtdev", Opt_rtdev),
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fsparam_flag("wsync", Opt_wsync),
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fsparam_flag("noalign", Opt_noalign),
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fsparam_flag("swalloc", Opt_swalloc),
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fsparam_u32("sunit", Opt_sunit),
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fsparam_u32("swidth", Opt_swidth),
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fsparam_flag("nouuid", Opt_nouuid),
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fsparam_flag("grpid", Opt_grpid),
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fsparam_flag("nogrpid", Opt_nogrpid),
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fsparam_flag("bsdgroups", Opt_bsdgroups),
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fsparam_flag("sysvgroups", Opt_sysvgroups),
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fsparam_string("allocsize", Opt_allocsize),
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fsparam_flag("norecovery", Opt_norecovery),
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fsparam_flag("inode64", Opt_inode64),
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fsparam_flag("inode32", Opt_inode32),
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fsparam_flag("ikeep", Opt_ikeep),
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fsparam_flag("noikeep", Opt_noikeep),
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fsparam_flag("largeio", Opt_largeio),
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fsparam_flag("nolargeio", Opt_nolargeio),
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fsparam_flag("attr2", Opt_attr2),
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fsparam_flag("noattr2", Opt_noattr2),
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fsparam_flag("filestreams", Opt_filestreams),
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fsparam_flag("quota", Opt_quota),
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fsparam_flag("noquota", Opt_noquota),
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fsparam_flag("usrquota", Opt_usrquota),
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fsparam_flag("grpquota", Opt_grpquota),
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fsparam_flag("prjquota", Opt_prjquota),
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fsparam_flag("uquota", Opt_uquota),
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fsparam_flag("gquota", Opt_gquota),
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fsparam_flag("pquota", Opt_pquota),
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fsparam_flag("uqnoenforce", Opt_uqnoenforce),
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fsparam_flag("gqnoenforce", Opt_gqnoenforce),
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fsparam_flag("pqnoenforce", Opt_pqnoenforce),
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fsparam_flag("qnoenforce", Opt_qnoenforce),
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fsparam_flag("discard", Opt_discard),
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fsparam_flag("nodiscard", Opt_nodiscard),
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fsparam_flag("dax", Opt_dax),
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fsparam_enum("dax", Opt_dax_enum, dax_param_enums),
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{}
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};
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struct proc_xfs_info {
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uint64_t flag;
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char *str;
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};
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static int
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xfs_fs_show_options(
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struct seq_file *m,
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struct dentry *root)
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{
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static struct proc_xfs_info xfs_info_set[] = {
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/* the few simple ones we can get from the mount struct */
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{ XFS_FEAT_IKEEP, ",ikeep" },
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{ XFS_FEAT_WSYNC, ",wsync" },
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{ XFS_FEAT_NOALIGN, ",noalign" },
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{ XFS_FEAT_SWALLOC, ",swalloc" },
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{ XFS_FEAT_NOUUID, ",nouuid" },
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{ XFS_FEAT_NORECOVERY, ",norecovery" },
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{ XFS_FEAT_ATTR2, ",attr2" },
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{ XFS_FEAT_FILESTREAMS, ",filestreams" },
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{ XFS_FEAT_GRPID, ",grpid" },
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{ XFS_FEAT_DISCARD, ",discard" },
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{ XFS_FEAT_LARGE_IOSIZE, ",largeio" },
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{ XFS_FEAT_DAX_ALWAYS, ",dax=always" },
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{ XFS_FEAT_DAX_NEVER, ",dax=never" },
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{ 0, NULL }
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};
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struct xfs_mount *mp = XFS_M(root->d_sb);
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struct proc_xfs_info *xfs_infop;
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for (xfs_infop = xfs_info_set; xfs_infop->flag; xfs_infop++) {
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if (mp->m_features & xfs_infop->flag)
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seq_puts(m, xfs_infop->str);
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}
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seq_printf(m, ",inode%d", xfs_has_small_inums(mp) ? 32 : 64);
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if (xfs_has_allocsize(mp))
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seq_printf(m, ",allocsize=%dk",
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(1 << mp->m_allocsize_log) >> 10);
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if (mp->m_logbufs > 0)
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seq_printf(m, ",logbufs=%d", mp->m_logbufs);
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if (mp->m_logbsize > 0)
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seq_printf(m, ",logbsize=%dk", mp->m_logbsize >> 10);
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if (mp->m_logname)
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seq_show_option(m, "logdev", mp->m_logname);
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if (mp->m_rtname)
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seq_show_option(m, "rtdev", mp->m_rtname);
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if (mp->m_dalign > 0)
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seq_printf(m, ",sunit=%d",
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(int)XFS_FSB_TO_BB(mp, mp->m_dalign));
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if (mp->m_swidth > 0)
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seq_printf(m, ",swidth=%d",
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(int)XFS_FSB_TO_BB(mp, mp->m_swidth));
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if (mp->m_qflags & XFS_UQUOTA_ENFD)
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seq_puts(m, ",usrquota");
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else if (mp->m_qflags & XFS_UQUOTA_ACCT)
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seq_puts(m, ",uqnoenforce");
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if (mp->m_qflags & XFS_PQUOTA_ENFD)
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seq_puts(m, ",prjquota");
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else if (mp->m_qflags & XFS_PQUOTA_ACCT)
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seq_puts(m, ",pqnoenforce");
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if (mp->m_qflags & XFS_GQUOTA_ENFD)
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seq_puts(m, ",grpquota");
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else if (mp->m_qflags & XFS_GQUOTA_ACCT)
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seq_puts(m, ",gqnoenforce");
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if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT))
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seq_puts(m, ",noquota");
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return 0;
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}
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/*
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* Set parameters for inode allocation heuristics, taking into account
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* filesystem size and inode32/inode64 mount options; i.e. specifically
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* whether or not XFS_FEAT_SMALL_INUMS is set.
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*
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* Inode allocation patterns are altered only if inode32 is requested
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* (XFS_FEAT_SMALL_INUMS), and the filesystem is sufficiently large.
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* If altered, XFS_OPSTATE_INODE32 is set as well.
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*
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* An agcount independent of that in the mount structure is provided
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* because in the growfs case, mp->m_sb.sb_agcount is not yet updated
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* to the potentially higher ag count.
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*
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* Returns the maximum AG index which may contain inodes.
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*/
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xfs_agnumber_t
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xfs_set_inode_alloc(
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struct xfs_mount *mp,
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xfs_agnumber_t agcount)
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{
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xfs_agnumber_t index;
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xfs_agnumber_t maxagi = 0;
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xfs_sb_t *sbp = &mp->m_sb;
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xfs_agnumber_t max_metadata;
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xfs_agino_t agino;
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xfs_ino_t ino;
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/*
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* Calculate how much should be reserved for inodes to meet
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* the max inode percentage. Used only for inode32.
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*/
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if (M_IGEO(mp)->maxicount) {
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uint64_t icount;
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icount = sbp->sb_dblocks * sbp->sb_imax_pct;
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do_div(icount, 100);
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icount += sbp->sb_agblocks - 1;
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do_div(icount, sbp->sb_agblocks);
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max_metadata = icount;
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} else {
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max_metadata = agcount;
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}
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/* Get the last possible inode in the filesystem */
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agino = XFS_AGB_TO_AGINO(mp, sbp->sb_agblocks - 1);
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ino = XFS_AGINO_TO_INO(mp, agcount - 1, agino);
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/*
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* If user asked for no more than 32-bit inodes, and the fs is
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* sufficiently large, set XFS_OPSTATE_INODE32 if we must alter
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* the allocator to accommodate the request.
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*/
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if (xfs_has_small_inums(mp) && ino > XFS_MAXINUMBER_32)
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set_bit(XFS_OPSTATE_INODE32, &mp->m_opstate);
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else
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clear_bit(XFS_OPSTATE_INODE32, &mp->m_opstate);
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for (index = 0; index < agcount; index++) {
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struct xfs_perag *pag;
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ino = XFS_AGINO_TO_INO(mp, index, agino);
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pag = xfs_perag_get(mp, index);
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if (xfs_is_inode32(mp)) {
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if (ino > XFS_MAXINUMBER_32) {
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pag->pagi_inodeok = 0;
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pag->pagf_metadata = 0;
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} else {
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pag->pagi_inodeok = 1;
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maxagi++;
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if (index < max_metadata)
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pag->pagf_metadata = 1;
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else
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pag->pagf_metadata = 0;
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}
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} else {
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pag->pagi_inodeok = 1;
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pag->pagf_metadata = 0;
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}
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xfs_perag_put(pag);
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}
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return xfs_is_inode32(mp) ? maxagi : agcount;
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}
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static int
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xfs_setup_dax_always(
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struct xfs_mount *mp)
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{
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if (!mp->m_ddev_targp->bt_daxdev &&
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(!mp->m_rtdev_targp || !mp->m_rtdev_targp->bt_daxdev)) {
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xfs_alert(mp,
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"DAX unsupported by block device. Turning off DAX.");
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goto disable_dax;
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}
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if (mp->m_super->s_blocksize != PAGE_SIZE) {
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xfs_alert(mp,
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"DAX not supported for blocksize. Turning off DAX.");
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goto disable_dax;
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}
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if (xfs_has_reflink(mp) &&
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bdev_is_partition(mp->m_ddev_targp->bt_bdev)) {
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xfs_alert(mp,
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"DAX and reflink cannot work with multi-partitions!");
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return -EINVAL;
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}
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xfs_warn(mp, "DAX enabled. Warning: EXPERIMENTAL, use at your own risk");
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return 0;
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disable_dax:
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xfs_mount_set_dax_mode(mp, XFS_DAX_NEVER);
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return 0;
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}
|
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|
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STATIC int
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xfs_blkdev_get(
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xfs_mount_t *mp,
|
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const char *name,
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struct block_device **bdevp)
|
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{
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int error = 0;
|
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|
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*bdevp = blkdev_get_by_path(name, FMODE_READ|FMODE_WRITE|FMODE_EXCL,
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mp);
|
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if (IS_ERR(*bdevp)) {
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error = PTR_ERR(*bdevp);
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xfs_warn(mp, "Invalid device [%s], error=%d", name, error);
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}
|
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|
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return error;
|
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}
|
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|
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STATIC void
|
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xfs_blkdev_put(
|
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struct block_device *bdev)
|
|
{
|
|
if (bdev)
|
|
blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
|
|
}
|
|
|
|
STATIC void
|
|
xfs_close_devices(
|
|
struct xfs_mount *mp)
|
|
{
|
|
if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) {
|
|
struct block_device *logdev = mp->m_logdev_targp->bt_bdev;
|
|
|
|
xfs_free_buftarg(mp->m_logdev_targp);
|
|
xfs_blkdev_put(logdev);
|
|
}
|
|
if (mp->m_rtdev_targp) {
|
|
struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev;
|
|
|
|
xfs_free_buftarg(mp->m_rtdev_targp);
|
|
xfs_blkdev_put(rtdev);
|
|
}
|
|
xfs_free_buftarg(mp->m_ddev_targp);
|
|
}
|
|
|
|
/*
|
|
* The file system configurations are:
|
|
* (1) device (partition) with data and internal log
|
|
* (2) logical volume with data and log subvolumes.
|
|
* (3) logical volume with data, log, and realtime subvolumes.
|
|
*
|
|
* We only have to handle opening the log and realtime volumes here if
|
|
* they are present. The data subvolume has already been opened by
|
|
* get_sb_bdev() and is stored in sb->s_bdev.
|
|
*/
|
|
STATIC int
|
|
xfs_open_devices(
|
|
struct xfs_mount *mp)
|
|
{
|
|
struct block_device *ddev = mp->m_super->s_bdev;
|
|
struct block_device *logdev = NULL, *rtdev = NULL;
|
|
int error;
|
|
|
|
/*
|
|
* Open real time and log devices - order is important.
|
|
*/
|
|
if (mp->m_logname) {
|
|
error = xfs_blkdev_get(mp, mp->m_logname, &logdev);
|
|
if (error)
|
|
return error;
|
|
}
|
|
|
|
if (mp->m_rtname) {
|
|
error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev);
|
|
if (error)
|
|
goto out_close_logdev;
|
|
|
|
if (rtdev == ddev || rtdev == logdev) {
|
|
xfs_warn(mp,
|
|
"Cannot mount filesystem with identical rtdev and ddev/logdev.");
|
|
error = -EINVAL;
|
|
goto out_close_rtdev;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Setup xfs_mount buffer target pointers
|
|
*/
|
|
error = -ENOMEM;
|
|
mp->m_ddev_targp = xfs_alloc_buftarg(mp, ddev);
|
|
if (!mp->m_ddev_targp)
|
|
goto out_close_rtdev;
|
|
|
|
if (rtdev) {
|
|
mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev);
|
|
if (!mp->m_rtdev_targp)
|
|
goto out_free_ddev_targ;
|
|
}
|
|
|
|
if (logdev && logdev != ddev) {
|
|
mp->m_logdev_targp = xfs_alloc_buftarg(mp, logdev);
|
|
if (!mp->m_logdev_targp)
|
|
goto out_free_rtdev_targ;
|
|
} else {
|
|
mp->m_logdev_targp = mp->m_ddev_targp;
|
|
}
|
|
|
|
return 0;
|
|
|
|
out_free_rtdev_targ:
|
|
if (mp->m_rtdev_targp)
|
|
xfs_free_buftarg(mp->m_rtdev_targp);
|
|
out_free_ddev_targ:
|
|
xfs_free_buftarg(mp->m_ddev_targp);
|
|
out_close_rtdev:
|
|
xfs_blkdev_put(rtdev);
|
|
out_close_logdev:
|
|
if (logdev && logdev != ddev)
|
|
xfs_blkdev_put(logdev);
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* Setup xfs_mount buffer target pointers based on superblock
|
|
*/
|
|
STATIC int
|
|
xfs_setup_devices(
|
|
struct xfs_mount *mp)
|
|
{
|
|
int error;
|
|
|
|
error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_sectsize);
|
|
if (error)
|
|
return error;
|
|
|
|
if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) {
|
|
unsigned int log_sector_size = BBSIZE;
|
|
|
|
if (xfs_has_sector(mp))
|
|
log_sector_size = mp->m_sb.sb_logsectsize;
|
|
error = xfs_setsize_buftarg(mp->m_logdev_targp,
|
|
log_sector_size);
|
|
if (error)
|
|
return error;
|
|
}
|
|
if (mp->m_rtdev_targp) {
|
|
error = xfs_setsize_buftarg(mp->m_rtdev_targp,
|
|
mp->m_sb.sb_sectsize);
|
|
if (error)
|
|
return error;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
STATIC int
|
|
xfs_init_mount_workqueues(
|
|
struct xfs_mount *mp)
|
|
{
|
|
mp->m_buf_workqueue = alloc_workqueue("xfs-buf/%s",
|
|
XFS_WQFLAGS(WQ_FREEZABLE | WQ_MEM_RECLAIM),
|
|
1, mp->m_super->s_id);
|
|
if (!mp->m_buf_workqueue)
|
|
goto out;
|
|
|
|
mp->m_unwritten_workqueue = alloc_workqueue("xfs-conv/%s",
|
|
XFS_WQFLAGS(WQ_FREEZABLE | WQ_MEM_RECLAIM),
|
|
0, mp->m_super->s_id);
|
|
if (!mp->m_unwritten_workqueue)
|
|
goto out_destroy_buf;
|
|
|
|
mp->m_reclaim_workqueue = alloc_workqueue("xfs-reclaim/%s",
|
|
XFS_WQFLAGS(WQ_FREEZABLE | WQ_MEM_RECLAIM),
|
|
0, mp->m_super->s_id);
|
|
if (!mp->m_reclaim_workqueue)
|
|
goto out_destroy_unwritten;
|
|
|
|
mp->m_blockgc_wq = alloc_workqueue("xfs-blockgc/%s",
|
|
XFS_WQFLAGS(WQ_UNBOUND | WQ_FREEZABLE | WQ_MEM_RECLAIM),
|
|
0, mp->m_super->s_id);
|
|
if (!mp->m_blockgc_wq)
|
|
goto out_destroy_reclaim;
|
|
|
|
mp->m_inodegc_wq = alloc_workqueue("xfs-inodegc/%s",
|
|
XFS_WQFLAGS(WQ_FREEZABLE | WQ_MEM_RECLAIM),
|
|
1, mp->m_super->s_id);
|
|
if (!mp->m_inodegc_wq)
|
|
goto out_destroy_blockgc;
|
|
|
|
mp->m_sync_workqueue = alloc_workqueue("xfs-sync/%s",
|
|
XFS_WQFLAGS(WQ_FREEZABLE), 0, mp->m_super->s_id);
|
|
if (!mp->m_sync_workqueue)
|
|
goto out_destroy_inodegc;
|
|
|
|
return 0;
|
|
|
|
out_destroy_inodegc:
|
|
destroy_workqueue(mp->m_inodegc_wq);
|
|
out_destroy_blockgc:
|
|
destroy_workqueue(mp->m_blockgc_wq);
|
|
out_destroy_reclaim:
|
|
destroy_workqueue(mp->m_reclaim_workqueue);
|
|
out_destroy_unwritten:
|
|
destroy_workqueue(mp->m_unwritten_workqueue);
|
|
out_destroy_buf:
|
|
destroy_workqueue(mp->m_buf_workqueue);
|
|
out:
|
|
return -ENOMEM;
|
|
}
|
|
|
|
STATIC void
|
|
xfs_destroy_mount_workqueues(
|
|
struct xfs_mount *mp)
|
|
{
|
|
destroy_workqueue(mp->m_sync_workqueue);
|
|
destroy_workqueue(mp->m_blockgc_wq);
|
|
destroy_workqueue(mp->m_inodegc_wq);
|
|
destroy_workqueue(mp->m_reclaim_workqueue);
|
|
destroy_workqueue(mp->m_unwritten_workqueue);
|
|
destroy_workqueue(mp->m_buf_workqueue);
|
|
}
|
|
|
|
static void
|
|
xfs_flush_inodes_worker(
|
|
struct work_struct *work)
|
|
{
|
|
struct xfs_mount *mp = container_of(work, struct xfs_mount,
|
|
m_flush_inodes_work);
|
|
struct super_block *sb = mp->m_super;
|
|
|
|
if (down_read_trylock(&sb->s_umount)) {
|
|
sync_inodes_sb(sb);
|
|
up_read(&sb->s_umount);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Flush all dirty data to disk. Must not be called while holding an XFS_ILOCK
|
|
* or a page lock. We use sync_inodes_sb() here to ensure we block while waiting
|
|
* for IO to complete so that we effectively throttle multiple callers to the
|
|
* rate at which IO is completing.
|
|
*/
|
|
void
|
|
xfs_flush_inodes(
|
|
struct xfs_mount *mp)
|
|
{
|
|
/*
|
|
* If flush_work() returns true then that means we waited for a flush
|
|
* which was already in progress. Don't bother running another scan.
|
|
*/
|
|
if (flush_work(&mp->m_flush_inodes_work))
|
|
return;
|
|
|
|
queue_work(mp->m_sync_workqueue, &mp->m_flush_inodes_work);
|
|
flush_work(&mp->m_flush_inodes_work);
|
|
}
|
|
|
|
/* Catch misguided souls that try to use this interface on XFS */
|
|
STATIC struct inode *
|
|
xfs_fs_alloc_inode(
|
|
struct super_block *sb)
|
|
{
|
|
BUG();
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* Now that the generic code is guaranteed not to be accessing
|
|
* the linux inode, we can inactivate and reclaim the inode.
|
|
*/
|
|
STATIC void
|
|
xfs_fs_destroy_inode(
|
|
struct inode *inode)
|
|
{
|
|
struct xfs_inode *ip = XFS_I(inode);
|
|
|
|
trace_xfs_destroy_inode(ip);
|
|
|
|
ASSERT(!rwsem_is_locked(&inode->i_rwsem));
|
|
XFS_STATS_INC(ip->i_mount, vn_rele);
|
|
XFS_STATS_INC(ip->i_mount, vn_remove);
|
|
xfs_inode_mark_reclaimable(ip);
|
|
}
|
|
|
|
static void
|
|
xfs_fs_dirty_inode(
|
|
struct inode *inode,
|
|
int flag)
|
|
{
|
|
struct xfs_inode *ip = XFS_I(inode);
|
|
struct xfs_mount *mp = ip->i_mount;
|
|
struct xfs_trans *tp;
|
|
|
|
if (!(inode->i_sb->s_flags & SB_LAZYTIME))
|
|
return;
|
|
if (flag != I_DIRTY_SYNC || !(inode->i_state & I_DIRTY_TIME))
|
|
return;
|
|
|
|
if (xfs_trans_alloc(mp, &M_RES(mp)->tr_fsyncts, 0, 0, 0, &tp))
|
|
return;
|
|
xfs_ilock(ip, XFS_ILOCK_EXCL);
|
|
xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
|
|
xfs_trans_log_inode(tp, ip, XFS_ILOG_TIMESTAMP);
|
|
xfs_trans_commit(tp);
|
|
}
|
|
|
|
/*
|
|
* Slab object creation initialisation for the XFS inode.
|
|
* This covers only the idempotent fields in the XFS inode;
|
|
* all other fields need to be initialised on allocation
|
|
* from the slab. This avoids the need to repeatedly initialise
|
|
* fields in the xfs inode that left in the initialise state
|
|
* when freeing the inode.
|
|
*/
|
|
STATIC void
|
|
xfs_fs_inode_init_once(
|
|
void *inode)
|
|
{
|
|
struct xfs_inode *ip = inode;
|
|
|
|
memset(ip, 0, sizeof(struct xfs_inode));
|
|
|
|
/* vfs inode */
|
|
inode_init_once(VFS_I(ip));
|
|
|
|
/* xfs inode */
|
|
atomic_set(&ip->i_pincount, 0);
|
|
spin_lock_init(&ip->i_flags_lock);
|
|
|
|
mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER,
|
|
"xfsino", ip->i_ino);
|
|
}
|
|
|
|
/*
|
|
* We do an unlocked check for XFS_IDONTCACHE here because we are already
|
|
* serialised against cache hits here via the inode->i_lock and igrab() in
|
|
* xfs_iget_cache_hit(). Hence a lookup that might clear this flag will not be
|
|
* racing with us, and it avoids needing to grab a spinlock here for every inode
|
|
* we drop the final reference on.
|
|
*/
|
|
STATIC int
|
|
xfs_fs_drop_inode(
|
|
struct inode *inode)
|
|
{
|
|
struct xfs_inode *ip = XFS_I(inode);
|
|
|
|
/*
|
|
* If this unlinked inode is in the middle of recovery, don't
|
|
* drop the inode just yet; log recovery will take care of
|
|
* that. See the comment for this inode flag.
|
|
*/
|
|
if (ip->i_flags & XFS_IRECOVERY) {
|
|
ASSERT(xlog_recovery_needed(ip->i_mount->m_log));
|
|
return 0;
|
|
}
|
|
|
|
return generic_drop_inode(inode);
|
|
}
|
|
|
|
static void
|
|
xfs_mount_free(
|
|
struct xfs_mount *mp)
|
|
{
|
|
kfree(mp->m_rtname);
|
|
kfree(mp->m_logname);
|
|
kmem_free(mp);
|
|
}
|
|
|
|
STATIC int
|
|
xfs_fs_sync_fs(
|
|
struct super_block *sb,
|
|
int wait)
|
|
{
|
|
struct xfs_mount *mp = XFS_M(sb);
|
|
int error;
|
|
|
|
trace_xfs_fs_sync_fs(mp, __return_address);
|
|
|
|
/*
|
|
* Doing anything during the async pass would be counterproductive.
|
|
*/
|
|
if (!wait)
|
|
return 0;
|
|
|
|
error = xfs_log_force(mp, XFS_LOG_SYNC);
|
|
if (error)
|
|
return error;
|
|
|
|
if (laptop_mode) {
|
|
/*
|
|
* The disk must be active because we're syncing.
|
|
* We schedule log work now (now that the disk is
|
|
* active) instead of later (when it might not be).
|
|
*/
|
|
flush_delayed_work(&mp->m_log->l_work);
|
|
}
|
|
|
|
/*
|
|
* If we are called with page faults frozen out, it means we are about
|
|
* to freeze the transaction subsystem. Take the opportunity to shut
|
|
* down inodegc because once SB_FREEZE_FS is set it's too late to
|
|
* prevent inactivation races with freeze. The fs doesn't get called
|
|
* again by the freezing process until after SB_FREEZE_FS has been set,
|
|
* so it's now or never. Same logic applies to speculative allocation
|
|
* garbage collection.
|
|
*
|
|
* We don't care if this is a normal syncfs call that does this or
|
|
* freeze that does this - we can run this multiple times without issue
|
|
* and we won't race with a restart because a restart can only occur
|
|
* when the state is either SB_FREEZE_FS or SB_FREEZE_COMPLETE.
|
|
*/
|
|
if (sb->s_writers.frozen == SB_FREEZE_PAGEFAULT) {
|
|
xfs_inodegc_stop(mp);
|
|
xfs_blockgc_stop(mp);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
STATIC int
|
|
xfs_fs_statfs(
|
|
struct dentry *dentry,
|
|
struct kstatfs *statp)
|
|
{
|
|
struct xfs_mount *mp = XFS_M(dentry->d_sb);
|
|
xfs_sb_t *sbp = &mp->m_sb;
|
|
struct xfs_inode *ip = XFS_I(d_inode(dentry));
|
|
uint64_t fakeinos, id;
|
|
uint64_t icount;
|
|
uint64_t ifree;
|
|
uint64_t fdblocks;
|
|
xfs_extlen_t lsize;
|
|
int64_t ffree;
|
|
|
|
/*
|
|
* Expedite background inodegc but don't wait. We do not want to block
|
|
* here waiting hours for a billion extent file to be truncated.
|
|
*/
|
|
xfs_inodegc_push(mp);
|
|
|
|
statp->f_type = XFS_SUPER_MAGIC;
|
|
statp->f_namelen = MAXNAMELEN - 1;
|
|
|
|
id = huge_encode_dev(mp->m_ddev_targp->bt_dev);
|
|
statp->f_fsid = u64_to_fsid(id);
|
|
|
|
icount = percpu_counter_sum(&mp->m_icount);
|
|
ifree = percpu_counter_sum(&mp->m_ifree);
|
|
fdblocks = percpu_counter_sum(&mp->m_fdblocks);
|
|
|
|
spin_lock(&mp->m_sb_lock);
|
|
statp->f_bsize = sbp->sb_blocksize;
|
|
lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0;
|
|
statp->f_blocks = sbp->sb_dblocks - lsize;
|
|
spin_unlock(&mp->m_sb_lock);
|
|
|
|
/* make sure statp->f_bfree does not underflow */
|
|
statp->f_bfree = max_t(int64_t, 0,
|
|
fdblocks - xfs_fdblocks_unavailable(mp));
|
|
statp->f_bavail = statp->f_bfree;
|
|
|
|
fakeinos = XFS_FSB_TO_INO(mp, statp->f_bfree);
|
|
statp->f_files = min(icount + fakeinos, (uint64_t)XFS_MAXINUMBER);
|
|
if (M_IGEO(mp)->maxicount)
|
|
statp->f_files = min_t(typeof(statp->f_files),
|
|
statp->f_files,
|
|
M_IGEO(mp)->maxicount);
|
|
|
|
/* If sb_icount overshot maxicount, report actual allocation */
|
|
statp->f_files = max_t(typeof(statp->f_files),
|
|
statp->f_files,
|
|
sbp->sb_icount);
|
|
|
|
/* make sure statp->f_ffree does not underflow */
|
|
ffree = statp->f_files - (icount - ifree);
|
|
statp->f_ffree = max_t(int64_t, ffree, 0);
|
|
|
|
|
|
if ((ip->i_diflags & XFS_DIFLAG_PROJINHERIT) &&
|
|
((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD))) ==
|
|
(XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD))
|
|
xfs_qm_statvfs(ip, statp);
|
|
|
|
if (XFS_IS_REALTIME_MOUNT(mp) &&
|
|
(ip->i_diflags & (XFS_DIFLAG_RTINHERIT | XFS_DIFLAG_REALTIME))) {
|
|
s64 freertx;
|
|
|
|
statp->f_blocks = sbp->sb_rblocks;
|
|
freertx = percpu_counter_sum_positive(&mp->m_frextents);
|
|
statp->f_bavail = statp->f_bfree = freertx * sbp->sb_rextsize;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
STATIC void
|
|
xfs_save_resvblks(struct xfs_mount *mp)
|
|
{
|
|
uint64_t resblks = 0;
|
|
|
|
mp->m_resblks_save = mp->m_resblks;
|
|
xfs_reserve_blocks(mp, &resblks, NULL);
|
|
}
|
|
|
|
STATIC void
|
|
xfs_restore_resvblks(struct xfs_mount *mp)
|
|
{
|
|
uint64_t resblks;
|
|
|
|
if (mp->m_resblks_save) {
|
|
resblks = mp->m_resblks_save;
|
|
mp->m_resblks_save = 0;
|
|
} else
|
|
resblks = xfs_default_resblks(mp);
|
|
|
|
xfs_reserve_blocks(mp, &resblks, NULL);
|
|
}
|
|
|
|
/*
|
|
* Second stage of a freeze. The data is already frozen so we only
|
|
* need to take care of the metadata. Once that's done sync the superblock
|
|
* to the log to dirty it in case of a crash while frozen. This ensures that we
|
|
* will recover the unlinked inode lists on the next mount.
|
|
*/
|
|
STATIC int
|
|
xfs_fs_freeze(
|
|
struct super_block *sb)
|
|
{
|
|
struct xfs_mount *mp = XFS_M(sb);
|
|
unsigned int flags;
|
|
int ret;
|
|
|
|
/*
|
|
* The filesystem is now frozen far enough that memory reclaim
|
|
* cannot safely operate on the filesystem. Hence we need to
|
|
* set a GFP_NOFS context here to avoid recursion deadlocks.
|
|
*/
|
|
flags = memalloc_nofs_save();
|
|
xfs_save_resvblks(mp);
|
|
ret = xfs_log_quiesce(mp);
|
|
memalloc_nofs_restore(flags);
|
|
|
|
/*
|
|
* For read-write filesystems, we need to restart the inodegc on error
|
|
* because we stopped it at SB_FREEZE_PAGEFAULT level and a thaw is not
|
|
* going to be run to restart it now. We are at SB_FREEZE_FS level
|
|
* here, so we can restart safely without racing with a stop in
|
|
* xfs_fs_sync_fs().
|
|
*/
|
|
if (ret && !xfs_is_readonly(mp)) {
|
|
xfs_blockgc_start(mp);
|
|
xfs_inodegc_start(mp);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
STATIC int
|
|
xfs_fs_unfreeze(
|
|
struct super_block *sb)
|
|
{
|
|
struct xfs_mount *mp = XFS_M(sb);
|
|
|
|
xfs_restore_resvblks(mp);
|
|
xfs_log_work_queue(mp);
|
|
|
|
/*
|
|
* Don't reactivate the inodegc worker on a readonly filesystem because
|
|
* inodes are sent directly to reclaim. Don't reactivate the blockgc
|
|
* worker because there are no speculative preallocations on a readonly
|
|
* filesystem.
|
|
*/
|
|
if (!xfs_is_readonly(mp)) {
|
|
xfs_blockgc_start(mp);
|
|
xfs_inodegc_start(mp);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* This function fills in xfs_mount_t fields based on mount args.
|
|
* Note: the superblock _has_ now been read in.
|
|
*/
|
|
STATIC int
|
|
xfs_finish_flags(
|
|
struct xfs_mount *mp)
|
|
{
|
|
/* Fail a mount where the logbuf is smaller than the log stripe */
|
|
if (xfs_has_logv2(mp)) {
|
|
if (mp->m_logbsize <= 0 &&
|
|
mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) {
|
|
mp->m_logbsize = mp->m_sb.sb_logsunit;
|
|
} else if (mp->m_logbsize > 0 &&
|
|
mp->m_logbsize < mp->m_sb.sb_logsunit) {
|
|
xfs_warn(mp,
|
|
"logbuf size must be greater than or equal to log stripe size");
|
|
return -EINVAL;
|
|
}
|
|
} else {
|
|
/* Fail a mount if the logbuf is larger than 32K */
|
|
if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) {
|
|
xfs_warn(mp,
|
|
"logbuf size for version 1 logs must be 16K or 32K");
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* V5 filesystems always use attr2 format for attributes.
|
|
*/
|
|
if (xfs_has_crc(mp) && xfs_has_noattr2(mp)) {
|
|
xfs_warn(mp, "Cannot mount a V5 filesystem as noattr2. "
|
|
"attr2 is always enabled for V5 filesystems.");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* prohibit r/w mounts of read-only filesystems
|
|
*/
|
|
if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !xfs_is_readonly(mp)) {
|
|
xfs_warn(mp,
|
|
"cannot mount a read-only filesystem as read-write");
|
|
return -EROFS;
|
|
}
|
|
|
|
if ((mp->m_qflags & XFS_GQUOTA_ACCT) &&
|
|
(mp->m_qflags & XFS_PQUOTA_ACCT) &&
|
|
!xfs_has_pquotino(mp)) {
|
|
xfs_warn(mp,
|
|
"Super block does not support project and group quota together");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
xfs_init_percpu_counters(
|
|
struct xfs_mount *mp)
|
|
{
|
|
int error;
|
|
|
|
error = percpu_counter_init(&mp->m_icount, 0, GFP_KERNEL);
|
|
if (error)
|
|
return -ENOMEM;
|
|
|
|
error = percpu_counter_init(&mp->m_ifree, 0, GFP_KERNEL);
|
|
if (error)
|
|
goto free_icount;
|
|
|
|
error = percpu_counter_init(&mp->m_fdblocks, 0, GFP_KERNEL);
|
|
if (error)
|
|
goto free_ifree;
|
|
|
|
error = percpu_counter_init(&mp->m_delalloc_blks, 0, GFP_KERNEL);
|
|
if (error)
|
|
goto free_fdblocks;
|
|
|
|
error = percpu_counter_init(&mp->m_frextents, 0, GFP_KERNEL);
|
|
if (error)
|
|
goto free_delalloc;
|
|
|
|
return 0;
|
|
|
|
free_delalloc:
|
|
percpu_counter_destroy(&mp->m_delalloc_blks);
|
|
free_fdblocks:
|
|
percpu_counter_destroy(&mp->m_fdblocks);
|
|
free_ifree:
|
|
percpu_counter_destroy(&mp->m_ifree);
|
|
free_icount:
|
|
percpu_counter_destroy(&mp->m_icount);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
void
|
|
xfs_reinit_percpu_counters(
|
|
struct xfs_mount *mp)
|
|
{
|
|
percpu_counter_set(&mp->m_icount, mp->m_sb.sb_icount);
|
|
percpu_counter_set(&mp->m_ifree, mp->m_sb.sb_ifree);
|
|
percpu_counter_set(&mp->m_fdblocks, mp->m_sb.sb_fdblocks);
|
|
percpu_counter_set(&mp->m_frextents, mp->m_sb.sb_frextents);
|
|
}
|
|
|
|
static void
|
|
xfs_destroy_percpu_counters(
|
|
struct xfs_mount *mp)
|
|
{
|
|
percpu_counter_destroy(&mp->m_icount);
|
|
percpu_counter_destroy(&mp->m_ifree);
|
|
percpu_counter_destroy(&mp->m_fdblocks);
|
|
ASSERT(xfs_is_shutdown(mp) ||
|
|
percpu_counter_sum(&mp->m_delalloc_blks) == 0);
|
|
percpu_counter_destroy(&mp->m_delalloc_blks);
|
|
percpu_counter_destroy(&mp->m_frextents);
|
|
}
|
|
|
|
static int
|
|
xfs_inodegc_init_percpu(
|
|
struct xfs_mount *mp)
|
|
{
|
|
struct xfs_inodegc *gc;
|
|
int cpu;
|
|
|
|
mp->m_inodegc = alloc_percpu(struct xfs_inodegc);
|
|
if (!mp->m_inodegc)
|
|
return -ENOMEM;
|
|
|
|
for_each_possible_cpu(cpu) {
|
|
gc = per_cpu_ptr(mp->m_inodegc, cpu);
|
|
init_llist_head(&gc->list);
|
|
gc->items = 0;
|
|
INIT_DELAYED_WORK(&gc->work, xfs_inodegc_worker);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
xfs_inodegc_free_percpu(
|
|
struct xfs_mount *mp)
|
|
{
|
|
if (!mp->m_inodegc)
|
|
return;
|
|
free_percpu(mp->m_inodegc);
|
|
}
|
|
|
|
static void
|
|
xfs_fs_put_super(
|
|
struct super_block *sb)
|
|
{
|
|
struct xfs_mount *mp = XFS_M(sb);
|
|
|
|
/* if ->fill_super failed, we have no mount to tear down */
|
|
if (!sb->s_fs_info)
|
|
return;
|
|
|
|
xfs_notice(mp, "Unmounting Filesystem");
|
|
xfs_filestream_unmount(mp);
|
|
xfs_unmountfs(mp);
|
|
|
|
xfs_freesb(mp);
|
|
free_percpu(mp->m_stats.xs_stats);
|
|
xfs_mount_list_del(mp);
|
|
xfs_inodegc_free_percpu(mp);
|
|
xfs_destroy_percpu_counters(mp);
|
|
xfs_destroy_mount_workqueues(mp);
|
|
xfs_close_devices(mp);
|
|
|
|
sb->s_fs_info = NULL;
|
|
xfs_mount_free(mp);
|
|
}
|
|
|
|
static long
|
|
xfs_fs_nr_cached_objects(
|
|
struct super_block *sb,
|
|
struct shrink_control *sc)
|
|
{
|
|
/* Paranoia: catch incorrect calls during mount setup or teardown */
|
|
if (WARN_ON_ONCE(!sb->s_fs_info))
|
|
return 0;
|
|
return xfs_reclaim_inodes_count(XFS_M(sb));
|
|
}
|
|
|
|
static long
|
|
xfs_fs_free_cached_objects(
|
|
struct super_block *sb,
|
|
struct shrink_control *sc)
|
|
{
|
|
return xfs_reclaim_inodes_nr(XFS_M(sb), sc->nr_to_scan);
|
|
}
|
|
|
|
static const struct super_operations xfs_super_operations = {
|
|
.alloc_inode = xfs_fs_alloc_inode,
|
|
.destroy_inode = xfs_fs_destroy_inode,
|
|
.dirty_inode = xfs_fs_dirty_inode,
|
|
.drop_inode = xfs_fs_drop_inode,
|
|
.put_super = xfs_fs_put_super,
|
|
.sync_fs = xfs_fs_sync_fs,
|
|
.freeze_fs = xfs_fs_freeze,
|
|
.unfreeze_fs = xfs_fs_unfreeze,
|
|
.statfs = xfs_fs_statfs,
|
|
.show_options = xfs_fs_show_options,
|
|
.nr_cached_objects = xfs_fs_nr_cached_objects,
|
|
.free_cached_objects = xfs_fs_free_cached_objects,
|
|
};
|
|
|
|
static int
|
|
suffix_kstrtoint(
|
|
const char *s,
|
|
unsigned int base,
|
|
int *res)
|
|
{
|
|
int last, shift_left_factor = 0, _res;
|
|
char *value;
|
|
int ret = 0;
|
|
|
|
value = kstrdup(s, GFP_KERNEL);
|
|
if (!value)
|
|
return -ENOMEM;
|
|
|
|
last = strlen(value) - 1;
|
|
if (value[last] == 'K' || value[last] == 'k') {
|
|
shift_left_factor = 10;
|
|
value[last] = '\0';
|
|
}
|
|
if (value[last] == 'M' || value[last] == 'm') {
|
|
shift_left_factor = 20;
|
|
value[last] = '\0';
|
|
}
|
|
if (value[last] == 'G' || value[last] == 'g') {
|
|
shift_left_factor = 30;
|
|
value[last] = '\0';
|
|
}
|
|
|
|
if (kstrtoint(value, base, &_res))
|
|
ret = -EINVAL;
|
|
kfree(value);
|
|
*res = _res << shift_left_factor;
|
|
return ret;
|
|
}
|
|
|
|
static inline void
|
|
xfs_fs_warn_deprecated(
|
|
struct fs_context *fc,
|
|
struct fs_parameter *param,
|
|
uint64_t flag,
|
|
bool value)
|
|
{
|
|
/* Don't print the warning if reconfiguring and current mount point
|
|
* already had the flag set
|
|
*/
|
|
if ((fc->purpose & FS_CONTEXT_FOR_RECONFIGURE) &&
|
|
!!(XFS_M(fc->root->d_sb)->m_features & flag) == value)
|
|
return;
|
|
xfs_warn(fc->s_fs_info, "%s mount option is deprecated.", param->key);
|
|
}
|
|
|
|
/*
|
|
* Set mount state from a mount option.
|
|
*
|
|
* NOTE: mp->m_super is NULL here!
|
|
*/
|
|
static int
|
|
xfs_fs_parse_param(
|
|
struct fs_context *fc,
|
|
struct fs_parameter *param)
|
|
{
|
|
struct xfs_mount *parsing_mp = fc->s_fs_info;
|
|
struct fs_parse_result result;
|
|
int size = 0;
|
|
int opt;
|
|
|
|
opt = fs_parse(fc, xfs_fs_parameters, param, &result);
|
|
if (opt < 0)
|
|
return opt;
|
|
|
|
switch (opt) {
|
|
case Opt_logbufs:
|
|
parsing_mp->m_logbufs = result.uint_32;
|
|
return 0;
|
|
case Opt_logbsize:
|
|
if (suffix_kstrtoint(param->string, 10, &parsing_mp->m_logbsize))
|
|
return -EINVAL;
|
|
return 0;
|
|
case Opt_logdev:
|
|
kfree(parsing_mp->m_logname);
|
|
parsing_mp->m_logname = kstrdup(param->string, GFP_KERNEL);
|
|
if (!parsing_mp->m_logname)
|
|
return -ENOMEM;
|
|
return 0;
|
|
case Opt_rtdev:
|
|
kfree(parsing_mp->m_rtname);
|
|
parsing_mp->m_rtname = kstrdup(param->string, GFP_KERNEL);
|
|
if (!parsing_mp->m_rtname)
|
|
return -ENOMEM;
|
|
return 0;
|
|
case Opt_allocsize:
|
|
if (suffix_kstrtoint(param->string, 10, &size))
|
|
return -EINVAL;
|
|
parsing_mp->m_allocsize_log = ffs(size) - 1;
|
|
parsing_mp->m_features |= XFS_FEAT_ALLOCSIZE;
|
|
return 0;
|
|
case Opt_grpid:
|
|
case Opt_bsdgroups:
|
|
parsing_mp->m_features |= XFS_FEAT_GRPID;
|
|
return 0;
|
|
case Opt_nogrpid:
|
|
case Opt_sysvgroups:
|
|
parsing_mp->m_features &= ~XFS_FEAT_GRPID;
|
|
return 0;
|
|
case Opt_wsync:
|
|
parsing_mp->m_features |= XFS_FEAT_WSYNC;
|
|
return 0;
|
|
case Opt_norecovery:
|
|
parsing_mp->m_features |= XFS_FEAT_NORECOVERY;
|
|
return 0;
|
|
case Opt_noalign:
|
|
parsing_mp->m_features |= XFS_FEAT_NOALIGN;
|
|
return 0;
|
|
case Opt_swalloc:
|
|
parsing_mp->m_features |= XFS_FEAT_SWALLOC;
|
|
return 0;
|
|
case Opt_sunit:
|
|
parsing_mp->m_dalign = result.uint_32;
|
|
return 0;
|
|
case Opt_swidth:
|
|
parsing_mp->m_swidth = result.uint_32;
|
|
return 0;
|
|
case Opt_inode32:
|
|
parsing_mp->m_features |= XFS_FEAT_SMALL_INUMS;
|
|
return 0;
|
|
case Opt_inode64:
|
|
parsing_mp->m_features &= ~XFS_FEAT_SMALL_INUMS;
|
|
return 0;
|
|
case Opt_nouuid:
|
|
parsing_mp->m_features |= XFS_FEAT_NOUUID;
|
|
return 0;
|
|
case Opt_largeio:
|
|
parsing_mp->m_features |= XFS_FEAT_LARGE_IOSIZE;
|
|
return 0;
|
|
case Opt_nolargeio:
|
|
parsing_mp->m_features &= ~XFS_FEAT_LARGE_IOSIZE;
|
|
return 0;
|
|
case Opt_filestreams:
|
|
parsing_mp->m_features |= XFS_FEAT_FILESTREAMS;
|
|
return 0;
|
|
case Opt_noquota:
|
|
parsing_mp->m_qflags &= ~XFS_ALL_QUOTA_ACCT;
|
|
parsing_mp->m_qflags &= ~XFS_ALL_QUOTA_ENFD;
|
|
return 0;
|
|
case Opt_quota:
|
|
case Opt_uquota:
|
|
case Opt_usrquota:
|
|
parsing_mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ENFD);
|
|
return 0;
|
|
case Opt_qnoenforce:
|
|
case Opt_uqnoenforce:
|
|
parsing_mp->m_qflags |= XFS_UQUOTA_ACCT;
|
|
parsing_mp->m_qflags &= ~XFS_UQUOTA_ENFD;
|
|
return 0;
|
|
case Opt_pquota:
|
|
case Opt_prjquota:
|
|
parsing_mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ENFD);
|
|
return 0;
|
|
case Opt_pqnoenforce:
|
|
parsing_mp->m_qflags |= XFS_PQUOTA_ACCT;
|
|
parsing_mp->m_qflags &= ~XFS_PQUOTA_ENFD;
|
|
return 0;
|
|
case Opt_gquota:
|
|
case Opt_grpquota:
|
|
parsing_mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ENFD);
|
|
return 0;
|
|
case Opt_gqnoenforce:
|
|
parsing_mp->m_qflags |= XFS_GQUOTA_ACCT;
|
|
parsing_mp->m_qflags &= ~XFS_GQUOTA_ENFD;
|
|
return 0;
|
|
case Opt_discard:
|
|
parsing_mp->m_features |= XFS_FEAT_DISCARD;
|
|
return 0;
|
|
case Opt_nodiscard:
|
|
parsing_mp->m_features &= ~XFS_FEAT_DISCARD;
|
|
return 0;
|
|
#ifdef CONFIG_FS_DAX
|
|
case Opt_dax:
|
|
xfs_mount_set_dax_mode(parsing_mp, XFS_DAX_ALWAYS);
|
|
return 0;
|
|
case Opt_dax_enum:
|
|
xfs_mount_set_dax_mode(parsing_mp, result.uint_32);
|
|
return 0;
|
|
#endif
|
|
/* Following mount options will be removed in September 2025 */
|
|
case Opt_ikeep:
|
|
xfs_fs_warn_deprecated(fc, param, XFS_FEAT_IKEEP, true);
|
|
parsing_mp->m_features |= XFS_FEAT_IKEEP;
|
|
return 0;
|
|
case Opt_noikeep:
|
|
xfs_fs_warn_deprecated(fc, param, XFS_FEAT_IKEEP, false);
|
|
parsing_mp->m_features &= ~XFS_FEAT_IKEEP;
|
|
return 0;
|
|
case Opt_attr2:
|
|
xfs_fs_warn_deprecated(fc, param, XFS_FEAT_ATTR2, true);
|
|
parsing_mp->m_features |= XFS_FEAT_ATTR2;
|
|
return 0;
|
|
case Opt_noattr2:
|
|
xfs_fs_warn_deprecated(fc, param, XFS_FEAT_NOATTR2, true);
|
|
parsing_mp->m_features |= XFS_FEAT_NOATTR2;
|
|
return 0;
|
|
default:
|
|
xfs_warn(parsing_mp, "unknown mount option [%s].", param->key);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
xfs_fs_validate_params(
|
|
struct xfs_mount *mp)
|
|
{
|
|
/* No recovery flag requires a read-only mount */
|
|
if (xfs_has_norecovery(mp) && !xfs_is_readonly(mp)) {
|
|
xfs_warn(mp, "no-recovery mounts must be read-only.");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* We have not read the superblock at this point, so only the attr2
|
|
* mount option can set the attr2 feature by this stage.
|
|
*/
|
|
if (xfs_has_attr2(mp) && xfs_has_noattr2(mp)) {
|
|
xfs_warn(mp, "attr2 and noattr2 cannot both be specified.");
|
|
return -EINVAL;
|
|
}
|
|
|
|
|
|
if (xfs_has_noalign(mp) && (mp->m_dalign || mp->m_swidth)) {
|
|
xfs_warn(mp,
|
|
"sunit and swidth options incompatible with the noalign option");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (!IS_ENABLED(CONFIG_XFS_QUOTA) && mp->m_qflags != 0) {
|
|
xfs_warn(mp, "quota support not available in this kernel.");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if ((mp->m_dalign && !mp->m_swidth) ||
|
|
(!mp->m_dalign && mp->m_swidth)) {
|
|
xfs_warn(mp, "sunit and swidth must be specified together");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (mp->m_dalign && (mp->m_swidth % mp->m_dalign != 0)) {
|
|
xfs_warn(mp,
|
|
"stripe width (%d) must be a multiple of the stripe unit (%d)",
|
|
mp->m_swidth, mp->m_dalign);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (mp->m_logbufs != -1 &&
|
|
mp->m_logbufs != 0 &&
|
|
(mp->m_logbufs < XLOG_MIN_ICLOGS ||
|
|
mp->m_logbufs > XLOG_MAX_ICLOGS)) {
|
|
xfs_warn(mp, "invalid logbufs value: %d [not %d-%d]",
|
|
mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (mp->m_logbsize != -1 &&
|
|
mp->m_logbsize != 0 &&
|
|
(mp->m_logbsize < XLOG_MIN_RECORD_BSIZE ||
|
|
mp->m_logbsize > XLOG_MAX_RECORD_BSIZE ||
|
|
!is_power_of_2(mp->m_logbsize))) {
|
|
xfs_warn(mp,
|
|
"invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]",
|
|
mp->m_logbsize);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (xfs_has_allocsize(mp) &&
|
|
(mp->m_allocsize_log > XFS_MAX_IO_LOG ||
|
|
mp->m_allocsize_log < XFS_MIN_IO_LOG)) {
|
|
xfs_warn(mp, "invalid log iosize: %d [not %d-%d]",
|
|
mp->m_allocsize_log, XFS_MIN_IO_LOG, XFS_MAX_IO_LOG);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
xfs_fs_fill_super(
|
|
struct super_block *sb,
|
|
struct fs_context *fc)
|
|
{
|
|
struct xfs_mount *mp = sb->s_fs_info;
|
|
struct inode *root;
|
|
int flags = 0, error;
|
|
|
|
mp->m_super = sb;
|
|
|
|
error = xfs_fs_validate_params(mp);
|
|
if (error)
|
|
goto out_free_names;
|
|
|
|
sb_min_blocksize(sb, BBSIZE);
|
|
sb->s_xattr = xfs_xattr_handlers;
|
|
sb->s_export_op = &xfs_export_operations;
|
|
#ifdef CONFIG_XFS_QUOTA
|
|
sb->s_qcop = &xfs_quotactl_operations;
|
|
sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
|
|
#endif
|
|
sb->s_op = &xfs_super_operations;
|
|
|
|
/*
|
|
* Delay mount work if the debug hook is set. This is debug
|
|
* instrumention to coordinate simulation of xfs mount failures with
|
|
* VFS superblock operations
|
|
*/
|
|
if (xfs_globals.mount_delay) {
|
|
xfs_notice(mp, "Delaying mount for %d seconds.",
|
|
xfs_globals.mount_delay);
|
|
msleep(xfs_globals.mount_delay * 1000);
|
|
}
|
|
|
|
if (fc->sb_flags & SB_SILENT)
|
|
flags |= XFS_MFSI_QUIET;
|
|
|
|
error = xfs_open_devices(mp);
|
|
if (error)
|
|
goto out_free_names;
|
|
|
|
error = xfs_init_mount_workqueues(mp);
|
|
if (error)
|
|
goto out_close_devices;
|
|
|
|
error = xfs_init_percpu_counters(mp);
|
|
if (error)
|
|
goto out_destroy_workqueues;
|
|
|
|
error = xfs_inodegc_init_percpu(mp);
|
|
if (error)
|
|
goto out_destroy_counters;
|
|
|
|
/*
|
|
* All percpu data structures requiring cleanup when a cpu goes offline
|
|
* must be allocated before adding this @mp to the cpu-dead handler's
|
|
* mount list.
|
|
*/
|
|
xfs_mount_list_add(mp);
|
|
|
|
/* Allocate stats memory before we do operations that might use it */
|
|
mp->m_stats.xs_stats = alloc_percpu(struct xfsstats);
|
|
if (!mp->m_stats.xs_stats) {
|
|
error = -ENOMEM;
|
|
goto out_destroy_inodegc;
|
|
}
|
|
|
|
error = xfs_readsb(mp, flags);
|
|
if (error)
|
|
goto out_free_stats;
|
|
|
|
error = xfs_finish_flags(mp);
|
|
if (error)
|
|
goto out_free_sb;
|
|
|
|
error = xfs_setup_devices(mp);
|
|
if (error)
|
|
goto out_free_sb;
|
|
|
|
/* V4 support is undergoing deprecation. */
|
|
if (!xfs_has_crc(mp)) {
|
|
#ifdef CONFIG_XFS_SUPPORT_V4
|
|
xfs_warn_once(mp,
|
|
"Deprecated V4 format (crc=0) will not be supported after September 2030.");
|
|
#else
|
|
xfs_warn(mp,
|
|
"Deprecated V4 format (crc=0) not supported by kernel.");
|
|
error = -EINVAL;
|
|
goto out_free_sb;
|
|
#endif
|
|
}
|
|
|
|
/* Filesystem claims it needs repair, so refuse the mount. */
|
|
if (xfs_has_needsrepair(mp)) {
|
|
xfs_warn(mp, "Filesystem needs repair. Please run xfs_repair.");
|
|
error = -EFSCORRUPTED;
|
|
goto out_free_sb;
|
|
}
|
|
|
|
/*
|
|
* Don't touch the filesystem if a user tool thinks it owns the primary
|
|
* superblock. mkfs doesn't clear the flag from secondary supers, so
|
|
* we don't check them at all.
|
|
*/
|
|
if (mp->m_sb.sb_inprogress) {
|
|
xfs_warn(mp, "Offline file system operation in progress!");
|
|
error = -EFSCORRUPTED;
|
|
goto out_free_sb;
|
|
}
|
|
|
|
/*
|
|
* Until this is fixed only page-sized or smaller data blocks work.
|
|
*/
|
|
if (mp->m_sb.sb_blocksize > PAGE_SIZE) {
|
|
xfs_warn(mp,
|
|
"File system with blocksize %d bytes. "
|
|
"Only pagesize (%ld) or less will currently work.",
|
|
mp->m_sb.sb_blocksize, PAGE_SIZE);
|
|
error = -ENOSYS;
|
|
goto out_free_sb;
|
|
}
|
|
|
|
/* Ensure this filesystem fits in the page cache limits */
|
|
if (xfs_sb_validate_fsb_count(&mp->m_sb, mp->m_sb.sb_dblocks) ||
|
|
xfs_sb_validate_fsb_count(&mp->m_sb, mp->m_sb.sb_rblocks)) {
|
|
xfs_warn(mp,
|
|
"file system too large to be mounted on this system.");
|
|
error = -EFBIG;
|
|
goto out_free_sb;
|
|
}
|
|
|
|
/*
|
|
* XFS block mappings use 54 bits to store the logical block offset.
|
|
* This should suffice to handle the maximum file size that the VFS
|
|
* supports (currently 2^63 bytes on 64-bit and ULONG_MAX << PAGE_SHIFT
|
|
* bytes on 32-bit), but as XFS and VFS have gotten the s_maxbytes
|
|
* calculation wrong on 32-bit kernels in the past, we'll add a WARN_ON
|
|
* to check this assertion.
|
|
*
|
|
* Avoid integer overflow by comparing the maximum bmbt offset to the
|
|
* maximum pagecache offset in units of fs blocks.
|
|
*/
|
|
if (!xfs_verify_fileoff(mp, XFS_B_TO_FSBT(mp, MAX_LFS_FILESIZE))) {
|
|
xfs_warn(mp,
|
|
"MAX_LFS_FILESIZE block offset (%llu) exceeds extent map maximum (%llu)!",
|
|
XFS_B_TO_FSBT(mp, MAX_LFS_FILESIZE),
|
|
XFS_MAX_FILEOFF);
|
|
error = -EINVAL;
|
|
goto out_free_sb;
|
|
}
|
|
|
|
error = xfs_filestream_mount(mp);
|
|
if (error)
|
|
goto out_free_sb;
|
|
|
|
/*
|
|
* we must configure the block size in the superblock before we run the
|
|
* full mount process as the mount process can lookup and cache inodes.
|
|
*/
|
|
sb->s_magic = XFS_SUPER_MAGIC;
|
|
sb->s_blocksize = mp->m_sb.sb_blocksize;
|
|
sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1;
|
|
sb->s_maxbytes = MAX_LFS_FILESIZE;
|
|
sb->s_max_links = XFS_MAXLINK;
|
|
sb->s_time_gran = 1;
|
|
if (xfs_has_bigtime(mp)) {
|
|
sb->s_time_min = xfs_bigtime_to_unix(XFS_BIGTIME_TIME_MIN);
|
|
sb->s_time_max = xfs_bigtime_to_unix(XFS_BIGTIME_TIME_MAX);
|
|
} else {
|
|
sb->s_time_min = XFS_LEGACY_TIME_MIN;
|
|
sb->s_time_max = XFS_LEGACY_TIME_MAX;
|
|
}
|
|
trace_xfs_inode_timestamp_range(mp, sb->s_time_min, sb->s_time_max);
|
|
sb->s_iflags |= SB_I_CGROUPWB;
|
|
|
|
set_posix_acl_flag(sb);
|
|
|
|
/* version 5 superblocks support inode version counters. */
|
|
if (xfs_has_crc(mp))
|
|
sb->s_flags |= SB_I_VERSION;
|
|
|
|
if (xfs_has_dax_always(mp)) {
|
|
error = xfs_setup_dax_always(mp);
|
|
if (error)
|
|
goto out_filestream_unmount;
|
|
}
|
|
|
|
if (xfs_has_discard(mp) && !bdev_max_discard_sectors(sb->s_bdev)) {
|
|
xfs_warn(mp,
|
|
"mounting with \"discard\" option, but the device does not support discard");
|
|
mp->m_features &= ~XFS_FEAT_DISCARD;
|
|
}
|
|
|
|
if (xfs_has_reflink(mp)) {
|
|
if (mp->m_sb.sb_rblocks) {
|
|
xfs_alert(mp,
|
|
"reflink not compatible with realtime device!");
|
|
error = -EINVAL;
|
|
goto out_filestream_unmount;
|
|
}
|
|
|
|
if (xfs_globals.always_cow) {
|
|
xfs_info(mp, "using DEBUG-only always_cow mode.");
|
|
mp->m_always_cow = true;
|
|
}
|
|
}
|
|
|
|
if (xfs_has_rmapbt(mp) && mp->m_sb.sb_rblocks) {
|
|
xfs_alert(mp,
|
|
"reverse mapping btree not compatible with realtime device!");
|
|
error = -EINVAL;
|
|
goto out_filestream_unmount;
|
|
}
|
|
|
|
if (xfs_has_large_extent_counts(mp))
|
|
xfs_warn(mp,
|
|
"EXPERIMENTAL Large extent counts feature in use. Use at your own risk!");
|
|
|
|
error = xfs_mountfs(mp);
|
|
if (error)
|
|
goto out_filestream_unmount;
|
|
|
|
root = igrab(VFS_I(mp->m_rootip));
|
|
if (!root) {
|
|
error = -ENOENT;
|
|
goto out_unmount;
|
|
}
|
|
sb->s_root = d_make_root(root);
|
|
if (!sb->s_root) {
|
|
error = -ENOMEM;
|
|
goto out_unmount;
|
|
}
|
|
|
|
return 0;
|
|
|
|
out_filestream_unmount:
|
|
xfs_filestream_unmount(mp);
|
|
out_free_sb:
|
|
xfs_freesb(mp);
|
|
out_free_stats:
|
|
free_percpu(mp->m_stats.xs_stats);
|
|
out_destroy_inodegc:
|
|
xfs_mount_list_del(mp);
|
|
xfs_inodegc_free_percpu(mp);
|
|
out_destroy_counters:
|
|
xfs_destroy_percpu_counters(mp);
|
|
out_destroy_workqueues:
|
|
xfs_destroy_mount_workqueues(mp);
|
|
out_close_devices:
|
|
xfs_close_devices(mp);
|
|
out_free_names:
|
|
sb->s_fs_info = NULL;
|
|
xfs_mount_free(mp);
|
|
return error;
|
|
|
|
out_unmount:
|
|
xfs_filestream_unmount(mp);
|
|
xfs_unmountfs(mp);
|
|
goto out_free_sb;
|
|
}
|
|
|
|
static int
|
|
xfs_fs_get_tree(
|
|
struct fs_context *fc)
|
|
{
|
|
return get_tree_bdev(fc, xfs_fs_fill_super);
|
|
}
|
|
|
|
static int
|
|
xfs_remount_rw(
|
|
struct xfs_mount *mp)
|
|
{
|
|
struct xfs_sb *sbp = &mp->m_sb;
|
|
int error;
|
|
|
|
if (xfs_has_norecovery(mp)) {
|
|
xfs_warn(mp,
|
|
"ro->rw transition prohibited on norecovery mount");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (xfs_sb_is_v5(sbp) &&
|
|
xfs_sb_has_ro_compat_feature(sbp, XFS_SB_FEAT_RO_COMPAT_UNKNOWN)) {
|
|
xfs_warn(mp,
|
|
"ro->rw transition prohibited on unknown (0x%x) ro-compat filesystem",
|
|
(sbp->sb_features_ro_compat &
|
|
XFS_SB_FEAT_RO_COMPAT_UNKNOWN));
|
|
return -EINVAL;
|
|
}
|
|
|
|
clear_bit(XFS_OPSTATE_READONLY, &mp->m_opstate);
|
|
|
|
/*
|
|
* If this is the first remount to writeable state we might have some
|
|
* superblock changes to update.
|
|
*/
|
|
if (mp->m_update_sb) {
|
|
error = xfs_sync_sb(mp, false);
|
|
if (error) {
|
|
xfs_warn(mp, "failed to write sb changes");
|
|
return error;
|
|
}
|
|
mp->m_update_sb = false;
|
|
}
|
|
|
|
/*
|
|
* Fill out the reserve pool if it is empty. Use the stashed value if
|
|
* it is non-zero, otherwise go with the default.
|
|
*/
|
|
xfs_restore_resvblks(mp);
|
|
xfs_log_work_queue(mp);
|
|
xfs_blockgc_start(mp);
|
|
|
|
/* Create the per-AG metadata reservation pool .*/
|
|
error = xfs_fs_reserve_ag_blocks(mp);
|
|
if (error && error != -ENOSPC)
|
|
return error;
|
|
|
|
/* Re-enable the background inode inactivation worker. */
|
|
xfs_inodegc_start(mp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
xfs_remount_ro(
|
|
struct xfs_mount *mp)
|
|
{
|
|
struct xfs_icwalk icw = {
|
|
.icw_flags = XFS_ICWALK_FLAG_SYNC,
|
|
};
|
|
int error;
|
|
|
|
/* Flush all the dirty data to disk. */
|
|
error = sync_filesystem(mp->m_super);
|
|
if (error)
|
|
return error;
|
|
|
|
/*
|
|
* Cancel background eofb scanning so it cannot race with the final
|
|
* log force+buftarg wait and deadlock the remount.
|
|
*/
|
|
xfs_blockgc_stop(mp);
|
|
|
|
/*
|
|
* Clear out all remaining COW staging extents and speculative post-EOF
|
|
* preallocations so that we don't leave inodes requiring inactivation
|
|
* cleanups during reclaim on a read-only mount. We must process every
|
|
* cached inode, so this requires a synchronous cache scan.
|
|
*/
|
|
error = xfs_blockgc_free_space(mp, &icw);
|
|
if (error) {
|
|
xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* Stop the inodegc background worker. xfs_fs_reconfigure already
|
|
* flushed all pending inodegc work when it sync'd the filesystem.
|
|
* The VFS holds s_umount, so we know that inodes cannot enter
|
|
* xfs_fs_destroy_inode during a remount operation. In readonly mode
|
|
* we send inodes straight to reclaim, so no inodes will be queued.
|
|
*/
|
|
xfs_inodegc_stop(mp);
|
|
|
|
/* Free the per-AG metadata reservation pool. */
|
|
error = xfs_fs_unreserve_ag_blocks(mp);
|
|
if (error) {
|
|
xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* Before we sync the metadata, we need to free up the reserve block
|
|
* pool so that the used block count in the superblock on disk is
|
|
* correct at the end of the remount. Stash the current* reserve pool
|
|
* size so that if we get remounted rw, we can return it to the same
|
|
* size.
|
|
*/
|
|
xfs_save_resvblks(mp);
|
|
|
|
xfs_log_clean(mp);
|
|
set_bit(XFS_OPSTATE_READONLY, &mp->m_opstate);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Logically we would return an error here to prevent users from believing
|
|
* they might have changed mount options using remount which can't be changed.
|
|
*
|
|
* But unfortunately mount(8) adds all options from mtab and fstab to the mount
|
|
* arguments in some cases so we can't blindly reject options, but have to
|
|
* check for each specified option if it actually differs from the currently
|
|
* set option and only reject it if that's the case.
|
|
*
|
|
* Until that is implemented we return success for every remount request, and
|
|
* silently ignore all options that we can't actually change.
|
|
*/
|
|
static int
|
|
xfs_fs_reconfigure(
|
|
struct fs_context *fc)
|
|
{
|
|
struct xfs_mount *mp = XFS_M(fc->root->d_sb);
|
|
struct xfs_mount *new_mp = fc->s_fs_info;
|
|
int flags = fc->sb_flags;
|
|
int error;
|
|
|
|
/* version 5 superblocks always support version counters. */
|
|
if (xfs_has_crc(mp))
|
|
fc->sb_flags |= SB_I_VERSION;
|
|
|
|
error = xfs_fs_validate_params(new_mp);
|
|
if (error)
|
|
return error;
|
|
|
|
/* inode32 -> inode64 */
|
|
if (xfs_has_small_inums(mp) && !xfs_has_small_inums(new_mp)) {
|
|
mp->m_features &= ~XFS_FEAT_SMALL_INUMS;
|
|
mp->m_maxagi = xfs_set_inode_alloc(mp, mp->m_sb.sb_agcount);
|
|
}
|
|
|
|
/* inode64 -> inode32 */
|
|
if (!xfs_has_small_inums(mp) && xfs_has_small_inums(new_mp)) {
|
|
mp->m_features |= XFS_FEAT_SMALL_INUMS;
|
|
mp->m_maxagi = xfs_set_inode_alloc(mp, mp->m_sb.sb_agcount);
|
|
}
|
|
|
|
/* ro -> rw */
|
|
if (xfs_is_readonly(mp) && !(flags & SB_RDONLY)) {
|
|
error = xfs_remount_rw(mp);
|
|
if (error)
|
|
return error;
|
|
}
|
|
|
|
/* rw -> ro */
|
|
if (!xfs_is_readonly(mp) && (flags & SB_RDONLY)) {
|
|
error = xfs_remount_ro(mp);
|
|
if (error)
|
|
return error;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void xfs_fs_free(
|
|
struct fs_context *fc)
|
|
{
|
|
struct xfs_mount *mp = fc->s_fs_info;
|
|
|
|
/*
|
|
* mp is stored in the fs_context when it is initialized.
|
|
* mp is transferred to the superblock on a successful mount,
|
|
* but if an error occurs before the transfer we have to free
|
|
* it here.
|
|
*/
|
|
if (mp)
|
|
xfs_mount_free(mp);
|
|
}
|
|
|
|
static const struct fs_context_operations xfs_context_ops = {
|
|
.parse_param = xfs_fs_parse_param,
|
|
.get_tree = xfs_fs_get_tree,
|
|
.reconfigure = xfs_fs_reconfigure,
|
|
.free = xfs_fs_free,
|
|
};
|
|
|
|
static int xfs_init_fs_context(
|
|
struct fs_context *fc)
|
|
{
|
|
struct xfs_mount *mp;
|
|
|
|
mp = kmem_alloc(sizeof(struct xfs_mount), KM_ZERO);
|
|
if (!mp)
|
|
return -ENOMEM;
|
|
|
|
spin_lock_init(&mp->m_sb_lock);
|
|
spin_lock_init(&mp->m_agirotor_lock);
|
|
INIT_RADIX_TREE(&mp->m_perag_tree, GFP_ATOMIC);
|
|
spin_lock_init(&mp->m_perag_lock);
|
|
mutex_init(&mp->m_growlock);
|
|
INIT_WORK(&mp->m_flush_inodes_work, xfs_flush_inodes_worker);
|
|
INIT_DELAYED_WORK(&mp->m_reclaim_work, xfs_reclaim_worker);
|
|
mp->m_kobj.kobject.kset = xfs_kset;
|
|
/*
|
|
* We don't create the finobt per-ag space reservation until after log
|
|
* recovery, so we must set this to true so that an ifree transaction
|
|
* started during log recovery will not depend on space reservations
|
|
* for finobt expansion.
|
|
*/
|
|
mp->m_finobt_nores = true;
|
|
|
|
/*
|
|
* These can be overridden by the mount option parsing.
|
|
*/
|
|
mp->m_logbufs = -1;
|
|
mp->m_logbsize = -1;
|
|
mp->m_allocsize_log = 16; /* 64k */
|
|
|
|
/*
|
|
* Copy binary VFS mount flags we are interested in.
|
|
*/
|
|
if (fc->sb_flags & SB_RDONLY)
|
|
set_bit(XFS_OPSTATE_READONLY, &mp->m_opstate);
|
|
if (fc->sb_flags & SB_DIRSYNC)
|
|
mp->m_features |= XFS_FEAT_DIRSYNC;
|
|
if (fc->sb_flags & SB_SYNCHRONOUS)
|
|
mp->m_features |= XFS_FEAT_WSYNC;
|
|
|
|
fc->s_fs_info = mp;
|
|
fc->ops = &xfs_context_ops;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct file_system_type xfs_fs_type = {
|
|
.owner = THIS_MODULE,
|
|
.name = "xfs",
|
|
.init_fs_context = xfs_init_fs_context,
|
|
.parameters = xfs_fs_parameters,
|
|
.kill_sb = kill_block_super,
|
|
.fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP,
|
|
};
|
|
MODULE_ALIAS_FS("xfs");
|
|
|
|
STATIC int __init
|
|
xfs_init_caches(void)
|
|
{
|
|
int error;
|
|
|
|
xfs_buf_cache = kmem_cache_create("xfs_buf", sizeof(struct xfs_buf), 0,
|
|
SLAB_HWCACHE_ALIGN |
|
|
SLAB_RECLAIM_ACCOUNT |
|
|
SLAB_MEM_SPREAD,
|
|
NULL);
|
|
if (!xfs_buf_cache)
|
|
goto out;
|
|
|
|
xfs_log_ticket_cache = kmem_cache_create("xfs_log_ticket",
|
|
sizeof(struct xlog_ticket),
|
|
0, 0, NULL);
|
|
if (!xfs_log_ticket_cache)
|
|
goto out_destroy_buf_cache;
|
|
|
|
error = xfs_btree_init_cur_caches();
|
|
if (error)
|
|
goto out_destroy_log_ticket_cache;
|
|
|
|
error = xfs_defer_init_item_caches();
|
|
if (error)
|
|
goto out_destroy_btree_cur_cache;
|
|
|
|
xfs_da_state_cache = kmem_cache_create("xfs_da_state",
|
|
sizeof(struct xfs_da_state),
|
|
0, 0, NULL);
|
|
if (!xfs_da_state_cache)
|
|
goto out_destroy_defer_item_cache;
|
|
|
|
xfs_ifork_cache = kmem_cache_create("xfs_ifork",
|
|
sizeof(struct xfs_ifork),
|
|
0, 0, NULL);
|
|
if (!xfs_ifork_cache)
|
|
goto out_destroy_da_state_cache;
|
|
|
|
xfs_trans_cache = kmem_cache_create("xfs_trans",
|
|
sizeof(struct xfs_trans),
|
|
0, 0, NULL);
|
|
if (!xfs_trans_cache)
|
|
goto out_destroy_ifork_cache;
|
|
|
|
|
|
/*
|
|
* The size of the cache-allocated buf log item is the maximum
|
|
* size possible under XFS. This wastes a little bit of memory,
|
|
* but it is much faster.
|
|
*/
|
|
xfs_buf_item_cache = kmem_cache_create("xfs_buf_item",
|
|
sizeof(struct xfs_buf_log_item),
|
|
0, 0, NULL);
|
|
if (!xfs_buf_item_cache)
|
|
goto out_destroy_trans_cache;
|
|
|
|
xfs_efd_cache = kmem_cache_create("xfs_efd_item",
|
|
(sizeof(struct xfs_efd_log_item) +
|
|
(XFS_EFD_MAX_FAST_EXTENTS - 1) *
|
|
sizeof(struct xfs_extent)),
|
|
0, 0, NULL);
|
|
if (!xfs_efd_cache)
|
|
goto out_destroy_buf_item_cache;
|
|
|
|
xfs_efi_cache = kmem_cache_create("xfs_efi_item",
|
|
(sizeof(struct xfs_efi_log_item) +
|
|
(XFS_EFI_MAX_FAST_EXTENTS - 1) *
|
|
sizeof(struct xfs_extent)),
|
|
0, 0, NULL);
|
|
if (!xfs_efi_cache)
|
|
goto out_destroy_efd_cache;
|
|
|
|
xfs_inode_cache = kmem_cache_create("xfs_inode",
|
|
sizeof(struct xfs_inode), 0,
|
|
(SLAB_HWCACHE_ALIGN |
|
|
SLAB_RECLAIM_ACCOUNT |
|
|
SLAB_MEM_SPREAD | SLAB_ACCOUNT),
|
|
xfs_fs_inode_init_once);
|
|
if (!xfs_inode_cache)
|
|
goto out_destroy_efi_cache;
|
|
|
|
xfs_ili_cache = kmem_cache_create("xfs_ili",
|
|
sizeof(struct xfs_inode_log_item), 0,
|
|
SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD,
|
|
NULL);
|
|
if (!xfs_ili_cache)
|
|
goto out_destroy_inode_cache;
|
|
|
|
xfs_icreate_cache = kmem_cache_create("xfs_icr",
|
|
sizeof(struct xfs_icreate_item),
|
|
0, 0, NULL);
|
|
if (!xfs_icreate_cache)
|
|
goto out_destroy_ili_cache;
|
|
|
|
xfs_rud_cache = kmem_cache_create("xfs_rud_item",
|
|
sizeof(struct xfs_rud_log_item),
|
|
0, 0, NULL);
|
|
if (!xfs_rud_cache)
|
|
goto out_destroy_icreate_cache;
|
|
|
|
xfs_rui_cache = kmem_cache_create("xfs_rui_item",
|
|
xfs_rui_log_item_sizeof(XFS_RUI_MAX_FAST_EXTENTS),
|
|
0, 0, NULL);
|
|
if (!xfs_rui_cache)
|
|
goto out_destroy_rud_cache;
|
|
|
|
xfs_cud_cache = kmem_cache_create("xfs_cud_item",
|
|
sizeof(struct xfs_cud_log_item),
|
|
0, 0, NULL);
|
|
if (!xfs_cud_cache)
|
|
goto out_destroy_rui_cache;
|
|
|
|
xfs_cui_cache = kmem_cache_create("xfs_cui_item",
|
|
xfs_cui_log_item_sizeof(XFS_CUI_MAX_FAST_EXTENTS),
|
|
0, 0, NULL);
|
|
if (!xfs_cui_cache)
|
|
goto out_destroy_cud_cache;
|
|
|
|
xfs_bud_cache = kmem_cache_create("xfs_bud_item",
|
|
sizeof(struct xfs_bud_log_item),
|
|
0, 0, NULL);
|
|
if (!xfs_bud_cache)
|
|
goto out_destroy_cui_cache;
|
|
|
|
xfs_bui_cache = kmem_cache_create("xfs_bui_item",
|
|
xfs_bui_log_item_sizeof(XFS_BUI_MAX_FAST_EXTENTS),
|
|
0, 0, NULL);
|
|
if (!xfs_bui_cache)
|
|
goto out_destroy_bud_cache;
|
|
|
|
xfs_attrd_cache = kmem_cache_create("xfs_attrd_item",
|
|
sizeof(struct xfs_attrd_log_item),
|
|
0, 0, NULL);
|
|
if (!xfs_attrd_cache)
|
|
goto out_destroy_bui_cache;
|
|
|
|
xfs_attri_cache = kmem_cache_create("xfs_attri_item",
|
|
sizeof(struct xfs_attri_log_item),
|
|
0, 0, NULL);
|
|
if (!xfs_attri_cache)
|
|
goto out_destroy_attrd_cache;
|
|
|
|
xfs_iunlink_cache = kmem_cache_create("xfs_iul_item",
|
|
sizeof(struct xfs_iunlink_item),
|
|
0, 0, NULL);
|
|
if (!xfs_iunlink_cache)
|
|
goto out_destroy_attri_cache;
|
|
|
|
return 0;
|
|
|
|
out_destroy_attri_cache:
|
|
kmem_cache_destroy(xfs_attri_cache);
|
|
out_destroy_attrd_cache:
|
|
kmem_cache_destroy(xfs_attrd_cache);
|
|
out_destroy_bui_cache:
|
|
kmem_cache_destroy(xfs_bui_cache);
|
|
out_destroy_bud_cache:
|
|
kmem_cache_destroy(xfs_bud_cache);
|
|
out_destroy_cui_cache:
|
|
kmem_cache_destroy(xfs_cui_cache);
|
|
out_destroy_cud_cache:
|
|
kmem_cache_destroy(xfs_cud_cache);
|
|
out_destroy_rui_cache:
|
|
kmem_cache_destroy(xfs_rui_cache);
|
|
out_destroy_rud_cache:
|
|
kmem_cache_destroy(xfs_rud_cache);
|
|
out_destroy_icreate_cache:
|
|
kmem_cache_destroy(xfs_icreate_cache);
|
|
out_destroy_ili_cache:
|
|
kmem_cache_destroy(xfs_ili_cache);
|
|
out_destroy_inode_cache:
|
|
kmem_cache_destroy(xfs_inode_cache);
|
|
out_destroy_efi_cache:
|
|
kmem_cache_destroy(xfs_efi_cache);
|
|
out_destroy_efd_cache:
|
|
kmem_cache_destroy(xfs_efd_cache);
|
|
out_destroy_buf_item_cache:
|
|
kmem_cache_destroy(xfs_buf_item_cache);
|
|
out_destroy_trans_cache:
|
|
kmem_cache_destroy(xfs_trans_cache);
|
|
out_destroy_ifork_cache:
|
|
kmem_cache_destroy(xfs_ifork_cache);
|
|
out_destroy_da_state_cache:
|
|
kmem_cache_destroy(xfs_da_state_cache);
|
|
out_destroy_defer_item_cache:
|
|
xfs_defer_destroy_item_caches();
|
|
out_destroy_btree_cur_cache:
|
|
xfs_btree_destroy_cur_caches();
|
|
out_destroy_log_ticket_cache:
|
|
kmem_cache_destroy(xfs_log_ticket_cache);
|
|
out_destroy_buf_cache:
|
|
kmem_cache_destroy(xfs_buf_cache);
|
|
out:
|
|
return -ENOMEM;
|
|
}
|
|
|
|
STATIC void
|
|
xfs_destroy_caches(void)
|
|
{
|
|
/*
|
|
* Make sure all delayed rcu free are flushed before we
|
|
* destroy caches.
|
|
*/
|
|
rcu_barrier();
|
|
kmem_cache_destroy(xfs_iunlink_cache);
|
|
kmem_cache_destroy(xfs_attri_cache);
|
|
kmem_cache_destroy(xfs_attrd_cache);
|
|
kmem_cache_destroy(xfs_bui_cache);
|
|
kmem_cache_destroy(xfs_bud_cache);
|
|
kmem_cache_destroy(xfs_cui_cache);
|
|
kmem_cache_destroy(xfs_cud_cache);
|
|
kmem_cache_destroy(xfs_rui_cache);
|
|
kmem_cache_destroy(xfs_rud_cache);
|
|
kmem_cache_destroy(xfs_icreate_cache);
|
|
kmem_cache_destroy(xfs_ili_cache);
|
|
kmem_cache_destroy(xfs_inode_cache);
|
|
kmem_cache_destroy(xfs_efi_cache);
|
|
kmem_cache_destroy(xfs_efd_cache);
|
|
kmem_cache_destroy(xfs_buf_item_cache);
|
|
kmem_cache_destroy(xfs_trans_cache);
|
|
kmem_cache_destroy(xfs_ifork_cache);
|
|
kmem_cache_destroy(xfs_da_state_cache);
|
|
xfs_defer_destroy_item_caches();
|
|
xfs_btree_destroy_cur_caches();
|
|
kmem_cache_destroy(xfs_log_ticket_cache);
|
|
kmem_cache_destroy(xfs_buf_cache);
|
|
}
|
|
|
|
STATIC int __init
|
|
xfs_init_workqueues(void)
|
|
{
|
|
/*
|
|
* The allocation workqueue can be used in memory reclaim situations
|
|
* (writepage path), and parallelism is only limited by the number of
|
|
* AGs in all the filesystems mounted. Hence use the default large
|
|
* max_active value for this workqueue.
|
|
*/
|
|
xfs_alloc_wq = alloc_workqueue("xfsalloc",
|
|
XFS_WQFLAGS(WQ_MEM_RECLAIM | WQ_FREEZABLE), 0);
|
|
if (!xfs_alloc_wq)
|
|
return -ENOMEM;
|
|
|
|
xfs_discard_wq = alloc_workqueue("xfsdiscard", XFS_WQFLAGS(WQ_UNBOUND),
|
|
0);
|
|
if (!xfs_discard_wq)
|
|
goto out_free_alloc_wq;
|
|
|
|
return 0;
|
|
out_free_alloc_wq:
|
|
destroy_workqueue(xfs_alloc_wq);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
STATIC void
|
|
xfs_destroy_workqueues(void)
|
|
{
|
|
destroy_workqueue(xfs_discard_wq);
|
|
destroy_workqueue(xfs_alloc_wq);
|
|
}
|
|
|
|
#ifdef CONFIG_HOTPLUG_CPU
|
|
static int
|
|
xfs_cpu_dead(
|
|
unsigned int cpu)
|
|
{
|
|
struct xfs_mount *mp, *n;
|
|
|
|
spin_lock(&xfs_mount_list_lock);
|
|
list_for_each_entry_safe(mp, n, &xfs_mount_list, m_mount_list) {
|
|
spin_unlock(&xfs_mount_list_lock);
|
|
xfs_inodegc_cpu_dead(mp, cpu);
|
|
xlog_cil_pcp_dead(mp->m_log, cpu);
|
|
spin_lock(&xfs_mount_list_lock);
|
|
}
|
|
spin_unlock(&xfs_mount_list_lock);
|
|
return 0;
|
|
}
|
|
|
|
static int __init
|
|
xfs_cpu_hotplug_init(void)
|
|
{
|
|
int error;
|
|
|
|
error = cpuhp_setup_state_nocalls(CPUHP_XFS_DEAD, "xfs:dead", NULL,
|
|
xfs_cpu_dead);
|
|
if (error < 0)
|
|
xfs_alert(NULL,
|
|
"Failed to initialise CPU hotplug, error %d. XFS is non-functional.",
|
|
error);
|
|
return error;
|
|
}
|
|
|
|
static void
|
|
xfs_cpu_hotplug_destroy(void)
|
|
{
|
|
cpuhp_remove_state_nocalls(CPUHP_XFS_DEAD);
|
|
}
|
|
|
|
#else /* !CONFIG_HOTPLUG_CPU */
|
|
static inline int xfs_cpu_hotplug_init(void) { return 0; }
|
|
static inline void xfs_cpu_hotplug_destroy(void) {}
|
|
#endif
|
|
|
|
STATIC int __init
|
|
init_xfs_fs(void)
|
|
{
|
|
int error;
|
|
|
|
xfs_check_ondisk_structs();
|
|
|
|
printk(KERN_INFO XFS_VERSION_STRING " with "
|
|
XFS_BUILD_OPTIONS " enabled\n");
|
|
|
|
xfs_dir_startup();
|
|
|
|
error = xfs_cpu_hotplug_init();
|
|
if (error)
|
|
goto out;
|
|
|
|
error = xfs_init_caches();
|
|
if (error)
|
|
goto out_destroy_hp;
|
|
|
|
error = xfs_init_workqueues();
|
|
if (error)
|
|
goto out_destroy_caches;
|
|
|
|
error = xfs_mru_cache_init();
|
|
if (error)
|
|
goto out_destroy_wq;
|
|
|
|
error = xfs_init_procfs();
|
|
if (error)
|
|
goto out_mru_cache_uninit;
|
|
|
|
error = xfs_sysctl_register();
|
|
if (error)
|
|
goto out_cleanup_procfs;
|
|
|
|
xfs_kset = kset_create_and_add("xfs", NULL, fs_kobj);
|
|
if (!xfs_kset) {
|
|
error = -ENOMEM;
|
|
goto out_sysctl_unregister;
|
|
}
|
|
|
|
xfsstats.xs_kobj.kobject.kset = xfs_kset;
|
|
|
|
xfsstats.xs_stats = alloc_percpu(struct xfsstats);
|
|
if (!xfsstats.xs_stats) {
|
|
error = -ENOMEM;
|
|
goto out_kset_unregister;
|
|
}
|
|
|
|
error = xfs_sysfs_init(&xfsstats.xs_kobj, &xfs_stats_ktype, NULL,
|
|
"stats");
|
|
if (error)
|
|
goto out_free_stats;
|
|
|
|
#ifdef DEBUG
|
|
xfs_dbg_kobj.kobject.kset = xfs_kset;
|
|
error = xfs_sysfs_init(&xfs_dbg_kobj, &xfs_dbg_ktype, NULL, "debug");
|
|
if (error)
|
|
goto out_remove_stats_kobj;
|
|
#endif
|
|
|
|
error = xfs_qm_init();
|
|
if (error)
|
|
goto out_remove_dbg_kobj;
|
|
|
|
error = register_filesystem(&xfs_fs_type);
|
|
if (error)
|
|
goto out_qm_exit;
|
|
return 0;
|
|
|
|
out_qm_exit:
|
|
xfs_qm_exit();
|
|
out_remove_dbg_kobj:
|
|
#ifdef DEBUG
|
|
xfs_sysfs_del(&xfs_dbg_kobj);
|
|
out_remove_stats_kobj:
|
|
#endif
|
|
xfs_sysfs_del(&xfsstats.xs_kobj);
|
|
out_free_stats:
|
|
free_percpu(xfsstats.xs_stats);
|
|
out_kset_unregister:
|
|
kset_unregister(xfs_kset);
|
|
out_sysctl_unregister:
|
|
xfs_sysctl_unregister();
|
|
out_cleanup_procfs:
|
|
xfs_cleanup_procfs();
|
|
out_mru_cache_uninit:
|
|
xfs_mru_cache_uninit();
|
|
out_destroy_wq:
|
|
xfs_destroy_workqueues();
|
|
out_destroy_caches:
|
|
xfs_destroy_caches();
|
|
out_destroy_hp:
|
|
xfs_cpu_hotplug_destroy();
|
|
out:
|
|
return error;
|
|
}
|
|
|
|
STATIC void __exit
|
|
exit_xfs_fs(void)
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{
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xfs_qm_exit();
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unregister_filesystem(&xfs_fs_type);
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#ifdef DEBUG
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xfs_sysfs_del(&xfs_dbg_kobj);
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#endif
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xfs_sysfs_del(&xfsstats.xs_kobj);
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free_percpu(xfsstats.xs_stats);
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kset_unregister(xfs_kset);
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xfs_sysctl_unregister();
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xfs_cleanup_procfs();
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xfs_mru_cache_uninit();
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xfs_destroy_workqueues();
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xfs_destroy_caches();
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xfs_uuid_table_free();
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xfs_cpu_hotplug_destroy();
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}
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module_init(init_xfs_fs);
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module_exit(exit_xfs_fs);
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MODULE_AUTHOR("Silicon Graphics, Inc.");
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MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled");
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MODULE_LICENSE("GPL");
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