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| author | Dave Chinner <dchinner@redhat.com> | 2010-04-29 03:55:50 +0400 |
|---|---|---|
| committer | Alex Elder <aelder@sgi.com> | 2010-04-30 01:22:13 +0400 |
| commit | 9bf729c0af67897ea8498ce17c29b0683f7f2028 (patch) | |
| tree | 9e6350fd9da5aef0b53ddeddd82f618ae16bf931 /fs/xfs/xfs_ag.h | |
| parent | 79dba2eaa771c3173957eccfd288e0e0d12e4d3f (diff) | |
| download | linux-9bf729c0af67897ea8498ce17c29b0683f7f2028.tar.xz | |
xfs: add a shrinker to background inode reclaim
On low memory boxes or those with highmem, kernel can OOM before the
background reclaims inodes via xfssyncd. Add a shrinker to run inode
reclaim so that it inode reclaim is expedited when memory is low.
This is more complex than it needs to be because the VM folk don't
want a context added to the shrinker infrastructure. Hence we need
to add a global list of XFS mount structures so the shrinker can
traverse them.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'fs/xfs/xfs_ag.h')
| -rw-r--r-- | fs/xfs/xfs_ag.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/xfs/xfs_ag.h b/fs/xfs/xfs_ag.h index b1a5a1ff88ea..abb8222b88c9 100644 --- a/fs/xfs/xfs_ag.h +++ b/fs/xfs/xfs_ag.h @@ -223,6 +223,7 @@ typedef struct xfs_perag { int pag_ici_init; /* incore inode cache initialised */ rwlock_t pag_ici_lock; /* incore inode lock */ struct radix_tree_root pag_ici_root; /* incore inode cache root */ + int pag_ici_reclaimable; /* reclaimable inodes */ #endif int pagb_count; /* pagb slots in use */ xfs_perag_busy_t pagb_list[XFS_PAGB_NUM_SLOTS]; /* unstable blocks */ |