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authorMiao Xie <miaox@cn.fujitsu.com>2013-01-29 14:11:59 +0400
committerJosef Bacik <jbacik@fusionio.com>2013-02-20 21:59:06 +0400
commitdf0af1a57f72c74d53a9377c60ff20095afab97d (patch)
tree588048ea16f8564a2eb449c0e9b7ba22c49eebc6 /fs/btrfs/btrfs_inode.h
parent963d678b0f7649300e3a67f2513ca9d830c6e303 (diff)
downloadlinux-df0af1a57f72c74d53a9377c60ff20095afab97d.tar.xz
Btrfs: use the inode own lock to protect its delalloc_bytes
We need not use a global lock to protect the delalloc_bytes of the inode, just use its own lock. In this way, we can reduce the lock contention and ->delalloc_lock will just protect delalloc inode list. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Diffstat (limited to 'fs/btrfs/btrfs_inode.h')
-rw-r--r--fs/btrfs/btrfs_inode.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h
index 2a8c242bc4f5..c935a774a9f8 100644
--- a/fs/btrfs/btrfs_inode.h
+++ b/fs/btrfs/btrfs_inode.h
@@ -40,6 +40,7 @@
#define BTRFS_INODE_HAS_ASYNC_EXTENT 6
#define BTRFS_INODE_NEEDS_FULL_SYNC 7
#define BTRFS_INODE_COPY_EVERYTHING 8
+#define BTRFS_INODE_IN_DELALLOC_LIST 9
/* in memory btrfs inode */
struct btrfs_inode {