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Btrfs: fix race between balance and unused block group deletion
[linux-2.6-block.git]
/
fs
/
btrfs
/
ctree.h
diff --git
a/fs/btrfs/ctree.h
b/fs/btrfs/ctree.h
index 80a9aefb0c46fc179119d8ad67eb9f8bff687ac1..aac314e14188facff9ed95136eab647709352359 100644
(file)
--- a/
fs/btrfs/ctree.h
+++ b/
fs/btrfs/ctree.h
@@
-1778,6
+1778,7
@@
struct btrfs_fs_info {
spinlock_t unused_bgs_lock;
struct list_head unused_bgs;
struct mutex unused_bg_unpin_mutex;
+ struct mutex delete_unused_bgs_mutex;
/* For btrfs to record security options */
struct security_mnt_opts security_opts;