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[XFS] Don't allow memory reclaim to wait on the filesystem in inode

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writeback

If we allow memory reclaim to wait on the pages under writeback in inode
cluster writeback we could deadlock because we are currently holding the
ILOCK on the initial writeback inode which is needed in data I/O
completion to change the file size or do unwritten extent conversion
before the pages are taken out of writeback state.

SGI-PV: 981091
SGI-Modid: xfs-linux-melb:xfs-kern:31015a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
This commit is contained in:
David Chinner 2008-05-19 16:29:34 +10:00 committed by Lachlan McIlroy
parent 978b723712
commit 49383b0e98
1 changed files with 1 additions and 1 deletions
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2
fs/xfs/xfs_inode.c
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@ -2986,7 +2986,7 @@ xfs_iflush_cluster(
ASSERT(pag->pag_ici_init);
ilist_size = XFS_INODE_CLUSTER_SIZE(mp) * sizeof(xfs_inode_t *);
ilist = kmem_alloc(ilist_size, KM_MAYFAIL);
ilist = kmem_alloc(ilist_size, KM_MAYFAIL|KM_NOFS);
if (!ilist)
return 0;