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linux/fs/xfs/xfs_rtalloc.h

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xfs: convert to SPDX license tags Remove the verbose license text from XFS files and replace them with SPDX tags. This does not change the license of any of the code, merely refers to the common, up-to-date license files in LICENSES/ This change was mostly scripted. fs/xfs/Makefile and fs/xfs/libxfs/xfs_fs.h were modified by hand, the rest were detected and modified by the following command: for f in `git grep -l "GNU General" fs/xfs/` ; do echo $f cat $f | awk -f hdr.awk > $f.new mv -f $f.new $f done And the hdr.awk script that did the modification (including detecting the difference between GPL-2.0 and GPL-2.0+ licenses) is as follows: $ cat hdr.awk BEGIN { hdr = 1.0 tag = "GPL-2.0" str = "" } /^ \* This program is free software/ { hdr = 2.0; next } /any later version./ { tag = "GPL-2.0+" next } /^ \*\// { if (hdr > 0.0) { print "// SPDX-License-Identifier: " tag print str print $0 str="" hdr = 0.0 next } print $0 next } /^ \* / { if (hdr > 1.0) next if (hdr > 0.0) { if (str != "") str = str "\n" str = str $0 next } print $0 next } /^ \*/ { if (hdr > 0.0) next print $0 next } // { if (hdr > 0.0) { if (str != "") str = str "\n" str = str $0 next } print $0 } END { } $ Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-06-06 02:42:14 +00:00
// SPDX-License-Identifier: GPL-2.0
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 22:20:36 +00:00
/*
[XFS] Update license/copyright notices to match the prefered SGI boilerplate. SGI-PV: 913862 SGI-Modid: xfs-linux:xfs-kern:23903a Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 03:58:39 +00:00
* Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
* All Rights Reserved.
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 22:20:36 +00:00
*/
#ifndef __XFS_RTALLOC_H__
#define __XFS_RTALLOC_H__
xfs: introduce xfs_rtalloc_defs.h There are quite a few realtime device definitions shared with userspace. Move them from xfs_rtalloc.h to xfs_rt_alloc_defs.h so we don't need to share xfs_rtalloc.h with userspace anymore. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-08-12 10:49:29 +00:00
/* kernel only definitions and functions */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 22:20:36 +00:00
struct xfs_mount;
struct xfs_trans;
#ifdef CONFIG_XFS_RT
/*
* Initialize realtime fields in the mount structure.
*/
int /* error */
xfs_rtmount_init(
struct xfs_mount *mp); /* file system mount structure */
xfs: make sure to free the real-time inodes in the mount error path When mount fails after allocating the real-time inodes we currently leak them. Add a new helper to free the real-time inodes which can be used by both the mount and unmount path. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Felix Blyakher <felixb@sgi.com>
2009-02-04 08:33:58 +00:00
void
xfs_rtunmount_inodes(
struct xfs_mount *mp);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 22:20:36 +00:00
/*
* Get the bitmap and summary inodes into the mount structure
* at mount time.
*/
int /* error */
xfs_rtmount_inodes(
struct xfs_mount *mp); /* file system mount structure */
/*
* Grow the realtime area of the filesystem.
*/
int
xfs_growfs_rt(
struct xfs_mount *mp, /* file system mount structure */
xfs_growfs_rt_t *in); /* user supplied growfs struct */
xfs: recalculate free rt extents after log recovery I've been observing periodic corruption reports from xfs_scrub involving the free rt extent counter (frextents) while running xfs/141. That test uses an error injection knob to induce a torn write to the log, and an arbitrary number of recovery mounts, frextents will count fewer free rt extents than can be found the rtbitmap. The root cause of the problem is a combination of the misuse of sb_frextents in the incore mount to reflect both incore reservations made by running transactions as well as the actual count of free rt extents on disk. The following sequence can reproduce the undercount: Thread 1 Thread 2 xfs_trans_alloc(rtextents=3) xfs_mod_frextents(-3) <blocks> xfs_attr_set() xfs_bmap_attr_addfork() xfs_add_attr2() xfs_log_sb() xfs_sb_to_disk() xfs_trans_commit() <log flushed to disk> <log goes down> Note that thread 1 subtracts 3 from sb_frextents even though it never commits to using that space. Thread 2 writes the undercounted value to the ondisk superblock and logs it to the xattr transaction, which is then flushed to disk. At next mount, log recovery will find the logged superblock and write that back into the filesystem. At the end of log recovery, we reread the superblock and install the recovered undercounted frextents value into the incore superblock. From that point on, we've effectively leaked thread 1's transaction reservation. The correct fix for this is to separate the incore reservation from the ondisk usage, but that's a matter for the next patch. Because the kernel has been logging superblocks with undercounted frextents for a very long time and we don't demand that sysadmins run xfs_repair after a crash, fix the undercount by recomputing frextents after log recovery. Gating this on log recovery is a reasonable balance (I think) between correcting the problem and slowing down every mount attempt. Note that xfs_repair will fix undercounted frextents. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
2022-04-11 20:49:42 +00:00
int xfs_rtalloc_reinit_frextents(struct xfs_mount *mp);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 22:20:36 +00:00
#else
xfs: rt stubs should return negative errnos when rt disabled When realtime support is not compiled into the kernel, these functions should return negative errnos, not positive errnos. While we're at it, fix a broken macro declaration. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
2023-10-16 16:21:21 +00:00
# define xfs_growfs_rt(mp,in) (-ENOSYS)
# define xfs_rtalloc_reinit_frextents(m) (0)
xfs: be more explicit if RT mount fails due to config Recent testers were slightly confused that a realtime mount failed due to missing CONFIG_XFS_RT; we can make that a little more obvious. V2: drop the else as suggested by Christoph Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
2010-04-30 16:43:48 +00:00
static inline int /* error */
xfs_rtmount_init(
xfs_mount_t *mp) /* file system mount structure */
{
if (mp->m_sb.sb_rblocks == 0)
return 0;
xfs: Convert remaining cmn_err() callers to new API Once converted, kill the remainder of the cmn_err() interface. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Alex Elder <aelder@sgi.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2011-03-06 23:08:35 +00:00
xfs_warn(mp, "Not built with CONFIG_XFS_RT");
xfs: global error sign conversion Convert all the errors the core XFs code to negative error signs like the rest of the kernel and remove all the sign conversion we do in the interface layers. Errors for conversion (and comparison) found via searches like: $ git grep " E" fs/xfs $ git grep "return E" fs/xfs $ git grep " E[A-Z].*;$" fs/xfs Negation points found via searches like: $ git grep "= -[a-z,A-Z]" fs/xfs $ git grep "return -[a-z,A-D,F-Z]" fs/xfs $ git grep " -[a-z].*;" fs/xfs [ with some bits I missed from Brian Foster ] Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
2014-06-25 04:58:08 +00:00
return -ENOSYS;
xfs: be more explicit if RT mount fails due to config Recent testers were slightly confused that a realtime mount failed due to missing CONFIG_XFS_RT; we can make that a little more obvious. V2: drop the else as suggested by Christoph Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
2010-04-30 16:43:48 +00:00
}
xfs: rt stubs should return negative errnos when rt disabled When realtime support is not compiled into the kernel, these functions should return negative errnos, not positive errnos. While we're at it, fix a broken macro declaration. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
2023-10-16 16:21:21 +00:00
# define xfs_rtmount_inodes(m) (((mp)->m_sb.sb_rblocks == 0)? 0 : (-ENOSYS))
xfs: make sure to free the real-time inodes in the mount error path When mount fails after allocating the real-time inodes we currently leak them. Add a new helper to free the real-time inodes which can be used by both the mount and unmount path. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Felix Blyakher <felixb@sgi.com>
2009-02-04 08:33:58 +00:00
# define xfs_rtunmount_inodes(m)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 22:20:36 +00:00
#endif /* CONFIG_XFS_RT */
#endif /* __XFS_RTALLOC_H__ */
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