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| author | Miao Xie <miaox@cn.fujitsu.com> | 2014-03-06 13:55:02 +0800 |
|---|---|---|
| committer | Josef Bacik <jbacik@fb.com> | 2014-03-10 15:17:28 -0400 |
| commit | 31f3d255c677073f83daa1e0671bbf2157bf8edc (patch) | |
| tree | 5a832934a4a886a7f62a21a4cfb1c678e3fab134 /fs/btrfs/ctree.h | |
| parent | 6c255e67cec1c38a0569c7f823eba63f9449ccf8 (diff) | |
| download | blackbird-op-linux-31f3d255c677073f83daa1e0671bbf2157bf8edc.tar.gz blackbird-op-linux-31f3d255c677073f83daa1e0671bbf2157bf8edc.zip | |
Btrfs: split the global ordered extents mutex
When we create a snapshot, we just need wait the ordered extents in
the source fs/file root, but because we use the global mutex to protect
this ordered extents list of the source fs/file root to avoid accessing
a empty list, if someone got the mutex to access the ordered extents list
of the other fs/file root, we had to wait.
This patch splits the above global mutex, now every fs/file root has
its own mutex to protect its own list.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 5a800986f416..5f4921554f0a 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -1814,6 +1814,8 @@ struct btrfs_root { struct list_head delalloc_inodes; struct list_head delalloc_root; u64 nr_delalloc_inodes; + + struct mutex ordered_extent_mutex; /* * this is used by the balancing code to wait for all the pending * ordered extents |
