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xfs: convert inode shrinker to per-filesystem contexts

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Now the shrinker passes us a context, wire up a shrinker context per
filesystem. This allows us to remove the global mount list and the
locking problems that introduced. It also means that a shrinker call
does not need to traverse clean filesystems before finding a
filesystem with reclaimable inodes.  This significantly reduces
scanning overhead when lots of filesystems are present.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Dave Chinner
2010-07-20 08:07:02 +10:00
committed by Dave Chinner
parent 7f8275d0d6
commit 70e60ce715
4 changed files with 15 additions and 53 deletions
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2
fs/xfs/linux-2.6/xfs_super.c
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@@ -1883,7 +1883,6 @@ init_xfs_fs(void)
goto out_cleanup_procfs;
vfs_initquota();
xfs_inode_shrinker_init();
error = register_filesystem(&xfs_fs_type);
if (error)
@@ -1911,7 +1910,6 @@ exit_xfs_fs(void)
{
vfs_exitquota();
unregister_filesystem(&xfs_fs_type);
xfs_inode_shrinker_destroy();
xfs_sysctl_unregister();
xfs_cleanup_procfs();
xfs_buf_terminate();