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authorChris Mason <chris.mason@oracle.com>2008-07-22 11:18:08 -0400
committerChris Mason <chris.mason@oracle.com>2008-09-25 11:04:05 -0400
commita61e6f29dc7c9d56a776a518eed92bbc61848263 (patch)
tree6856ad3e5822eacfc2ac94693b6023ef81567fd2 /fs/btrfs/extent_io.h
parent6af118ce51b52ceda357c671550c79628b9c4a65 (diff)
Btrfs: Use a mutex in the extent buffer for tree block locking
This replaces the use of the page cache lock bit for locking, which wasn't suitable for block size < page size and couldn't be used recursively. The mutexes alone don't fix either problem, but they are the first step. Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/extent_io.h')
-rw-r--r--fs/btrfs/extent_io.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index dd367617d780..6c03e6a19938 100644
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -90,6 +90,7 @@ struct extent_buffer {
int flags;
struct list_head leak_list;
struct rb_node rb_node;
+ struct mutex mutex;
};
struct extent_map_tree;