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authorChristoph Hellwig <hch@infradead.org>2009-10-19 04:00:03 +0000
committerAlex Elder <aelder@sgi.com>2009-12-11 15:11:20 -0600
commit80641dc66a2d6dfb22af4413227a92b8ab84c7bb (patch)
treef7353e4ca2bd4629b41c9ec79306d042d64f90f7 /fs/xfs/xfs_fsops.c
parentc56c9631cbe88f08854a56ff9776c1f310916830 (diff)
xfs: I/O completion handlers must use NOFS allocations
When completing I/O requests we must not allow the memory allocator to recurse into the filesystem, as we might deadlock on waiting for the I/O completion otherwise. The only thing currently allocating normal GFP_KERNEL memory is the allocation of the transaction structure for the unwritten extent conversion. Add a memflags argument to _xfs_trans_alloc to allow controlling the allocator behaviour. Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Thomas Neumann <tneumann@users.sourceforge.net> Tested-by: Thomas Neumann <tneumann@users.sourceforge.net> Reviewed-by: Alex Elder <aelder@sgi.com> Signed-off-by: Alex Elder <aelder@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_fsops.c')
-rw-r--r--fs/xfs/xfs_fsops.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c
index 2d0b3e1da9e..6f83f58c099 100644
--- a/fs/xfs/xfs_fsops.c
+++ b/fs/xfs/xfs_fsops.c
@@ -611,7 +611,7 @@ xfs_fs_log_dummy(
xfs_inode_t *ip;
int error;
- tp = _xfs_trans_alloc(mp, XFS_TRANS_DUMMY1);
+ tp = _xfs_trans_alloc(mp, XFS_TRANS_DUMMY1, KM_SLEEP);
error = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0);
if (error) {
xfs_trans_cancel(tp, 0);