f2fs: replace rw semaphore extent_tree_lock with mutex lock

This patch replace rw semaphore extent_tree_lock with mutex lock
for no read cases with this lock.

Signed-off-by: Yunlei He <heyunlei@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 6efb2d91f5a1..e26cc6909a54 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -844,7 +844,7 @@ struct f2fs_sb_info {
 
         /* for extent tree cache */
         struct radix_tree_root extent_tree_root;/* cache extent cache entries */
-        struct rw_semaphore extent_tree_lock;   /* locking extent radix tree */
+        struct mutex extent_tree_lock;  /* locking extent radix tree */
         struct list_head extent_list;           /* lru list for shrinker */
         spinlock_t extent_lock;                 /* locking extent lru list */
         atomic_t total_ext_tree;                /* extent tree count */