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3fed24fffc
To use the new rwsem_assert_held()/rwsem_assert_held_write(), we can't use the existing ASSERT macro. Add a new xfs_assert_ilocked() and convert all the callers. Fix an apparent bug in xfs_isilocked(): If the caller specifies XFS_IOLOCK_EXCL | XFS_ILOCK_EXCL, xfs_assert_ilocked() will check both the IOLOCK and the ILOCK are held for write. xfs_isilocked() only checked that the ILOCK was held for write. xfs_assert_ilocked() is always on, even if DEBUG or XFS_WARN aren't defined. It's a cheap check, so I don't think it's worth defining it away. Reviewed-by: "Darrick J. Wong" <djwong@kernel.org> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: "Matthew Wilcox (Oracle)" <willy@infradead.org> Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
129 lines
3.3 KiB
C
129 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2000,2005 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_fs.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_mount.h"
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#include "xfs_inode.h"
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#include "xfs_trans.h"
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#include "xfs_trans_priv.h"
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#include "xfs_inode_item.h"
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#include <linux/iversion.h>
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/*
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* Add a locked inode to the transaction.
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*
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* The inode must be locked, and it cannot be associated with any transaction.
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* If lock_flags is non-zero the inode will be unlocked on transaction commit.
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*/
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void
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xfs_trans_ijoin(
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struct xfs_trans *tp,
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struct xfs_inode *ip,
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uint lock_flags)
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{
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struct xfs_inode_log_item *iip;
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xfs_assert_ilocked(ip, XFS_ILOCK_EXCL);
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if (ip->i_itemp == NULL)
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xfs_inode_item_init(ip, ip->i_mount);
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iip = ip->i_itemp;
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ASSERT(iip->ili_lock_flags == 0);
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iip->ili_lock_flags = lock_flags;
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ASSERT(!xfs_iflags_test(ip, XFS_ISTALE));
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/* Reset the per-tx dirty context and add the item to the tx. */
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iip->ili_dirty_flags = 0;
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xfs_trans_add_item(tp, &iip->ili_item);
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}
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/*
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* Transactional inode timestamp update. Requires the inode to be locked and
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* joined to the transaction supplied. Relies on the transaction subsystem to
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* track dirty state and update/writeback the inode accordingly.
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*/
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void
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xfs_trans_ichgtime(
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struct xfs_trans *tp,
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struct xfs_inode *ip,
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int flags)
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{
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struct inode *inode = VFS_I(ip);
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struct timespec64 tv;
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ASSERT(tp);
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xfs_assert_ilocked(ip, XFS_ILOCK_EXCL);
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tv = current_time(inode);
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if (flags & XFS_ICHGTIME_MOD)
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inode_set_mtime_to_ts(inode, tv);
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if (flags & XFS_ICHGTIME_CHG)
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inode_set_ctime_to_ts(inode, tv);
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if (flags & XFS_ICHGTIME_CREATE)
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ip->i_crtime = tv;
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}
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/*
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* This is called to mark the fields indicated in fieldmask as needing to be
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* logged when the transaction is committed. The inode must already be
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* associated with the given transaction. All we do here is record where the
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* inode was dirtied and mark the transaction and inode log item dirty;
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* everything else is done in the ->precommit log item operation after the
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* changes in the transaction have been completed.
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*/
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void
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xfs_trans_log_inode(
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struct xfs_trans *tp,
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struct xfs_inode *ip,
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uint flags)
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{
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struct xfs_inode_log_item *iip = ip->i_itemp;
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struct inode *inode = VFS_I(ip);
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ASSERT(iip);
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xfs_assert_ilocked(ip, XFS_ILOCK_EXCL);
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ASSERT(!xfs_iflags_test(ip, XFS_ISTALE));
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tp->t_flags |= XFS_TRANS_DIRTY;
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/*
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* First time we log the inode in a transaction, bump the inode change
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* counter if it is configured for this to occur. While we have the
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* inode locked exclusively for metadata modification, we can usually
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* avoid setting XFS_ILOG_CORE if no one has queried the value since
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* the last time it was incremented. If we have XFS_ILOG_CORE already
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* set however, then go ahead and bump the i_version counter
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* unconditionally.
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*/
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if (!test_and_set_bit(XFS_LI_DIRTY, &iip->ili_item.li_flags)) {
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if (IS_I_VERSION(inode) &&
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inode_maybe_inc_iversion(inode, flags & XFS_ILOG_CORE))
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flags |= XFS_ILOG_IVERSION;
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}
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iip->ili_dirty_flags |= flags;
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}
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int
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xfs_trans_roll_inode(
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struct xfs_trans **tpp,
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struct xfs_inode *ip)
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{
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int error;
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xfs_trans_log_inode(*tpp, ip, XFS_ILOG_CORE);
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error = xfs_trans_roll(tpp);
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if (!error)
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xfs_trans_ijoin(*tpp, ip, 0);
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return error;
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}
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