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| author | Miao Xie <miaox@cn.fujitsu.com> | 2014-03-06 13:55:00 +0800 |
|---|---|---|
| committer | Josef Bacik <jbacik@fb.com> | 2014-03-10 15:17:26 -0400 |
| commit | 24af7dd1881f9f5c13c7d82e22d7858137383766 (patch) | |
| tree | 680b41cf74a472712f6ff57796531d21842d6a12 | |
| parent | 0424c548976b4c2a72c0bdbea425cf9d51e82d0f (diff) | |
| download | linux-24af7dd1881f9f5c13c7d82e22d7858137383766.tar.bz2 | |
Btrfs: reclaim delalloc metadata more aggressively
generic/074 in xfstests failed sometimes because of the enospc error,
the reason of this problem is that we just reclaimed the space we need
from the reserved space for delalloc, and then tried to reserve the space,
but if some task did no-flush reservation between the above reclamation
and reservation,
Task1 Task2
shrink_delalloc()
reclaim 1 block
(The space that can
be reserved now is 1
block)
do no-flush reservation
reserve 1 block
(The space that can
be reserved now is 0
block)
reserving 1 block failed
the reservation of Task1 failed, but in fact, there was enough space to
reserve if we could reclaim more space before.
Fix this problem by the aggressive reclamation of the reserved delalloc
metadata space.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>
| -rw-r--r-- | fs/btrfs/extent-tree.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 5608b4f8a27e..5c0c5457268a 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -4174,7 +4174,7 @@ static int flush_space(struct btrfs_root *root, break; case FLUSH_DELALLOC: case FLUSH_DELALLOC_WAIT: - shrink_delalloc(root, num_bytes, orig_bytes, + shrink_delalloc(root, num_bytes * 2, orig_bytes, state == FLUSH_DELALLOC_WAIT); break; case ALLOC_CHUNK: |