[PATCH 16/30] Unionfs: remove unnecessary lock in read_inode

[Erez Zadok <ezk@cs.sunysb.edu>]

Our read_inode doesn't need to grab the superblock rwsem because there no
chance it could be affected by branch management.  But our read_inode was
called from other places which did grab need to grab that rwsem, and lockdep
complained.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
---
 fs/unionfs/super.c |    3 ---
 1 files changed, 0 insertions(+), 3 deletions(-)

diff --git a/fs/unionfs/super.c b/fs/unionfs/super.c
index c474c86..8b70aca 100644
--- a/fs/unionfs/super.c
+++ b/fs/unionfs/super.c
@@ -29,8 +29,6 @@ static void unionfs_read_inode(struct inode *inode)
 	int size;
 	struct unionfs_inode_info *info = UNIONFS_I(inode);
 
-	unionfs_read_lock(inode->i_sb);
-
 	memset(info, 0, offsetof(struct unionfs_inode_info, vfs_inode));
 	info->bstart = -1;
 	info->bend = -1;
@@ -63,7 +61,6 @@ static void unionfs_read_inode(struct inode *inode)
 	inode->i_mtime.tv_sec = inode->i_mtime.tv_nsec = 0;
 	inode->i_ctime.tv_sec = inode->i_ctime.tv_nsec = 0;
 
-	unionfs_read_unlock(inode->i_sb);
 }
 
 /*
-- 
1.5.2.2

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