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xfs: fix xfs_mark_inode_dirty during umount

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commit 866e4ed774 upstream.

During umount we do not add a dirty inode to the lru and wait for it to
become clean first, but force writeback of data and metadata with
I_WILL_FREE set.  Currently there is no way for XFS to detect that the
inode has been redirtied for metadata operations, as we skip the
mark_inode_dirty call during teardown.  Fix this by setting i_update_core
nanually in that case, so that the inode gets flushed during inode reclaim.

Alternatively we could enable calling mark_inode_dirty for inodes in
I_WILL_FREE state, and let the VFS dirty tracking handle this.  I decided
against this as we will get better I/O patterns from reclaim compared to
the synchronous writeout in write_inode_now, and always marking the inode
dirty in some way from xfs_mark_inode_dirty is a better safetly net in
either case.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Alex Elder <aelder@sgi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Christoph Hellwig
2011-11-19 13:13:38 -05:00
committed by Greg Kroah-Hartman
parent e62cccfcf5
commit afd717d6cd
1 changed files with 11 additions and 3 deletions
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14
fs/xfs/linux-2.6/xfs_iops.c
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@@ -69,9 +69,8 @@ xfs_synchronize_times(
}
/*
* If the linux inode is valid, mark it dirty.
* Used when committing a dirty inode into a transaction so that
* the inode will get written back by the linux code
* If the linux inode is valid, mark it dirty, else mark the dirty state
* in the XFS inode to make sure we pick it up when reclaiming the inode.
*/
void
xfs_mark_inode_dirty_sync(
@@ -81,6 +80,10 @@ xfs_mark_inode_dirty_sync(
if (!(inode->i_state & (I_WILL_FREE|I_FREEING)))
mark_inode_dirty_sync(inode);
else {
barrier();
ip->i_update_core = 1;
}
}
void
@@ -91,6 +94,11 @@ xfs_mark_inode_dirty(
if (!(inode->i_state & (I_WILL_FREE|I_FREEING)))
mark_inode_dirty(inode);
else {
barrier();
ip->i_update_core = 1;
}
}
/*