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