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authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>2008-01-28 23:58:26 -0500
committerTheodore Ts'o <tytso@mit.edu>2008-01-28 23:58:26 -0500
commit0e855ac8b103ef579052936b59fe7c599ac422a4 (patch)
treeec29f82e1d7bb1987dcadc00497daf69d6955483 /fs/ext4/super.c
parentc278bfecebfb1ed67c326ef472660878baa745cd (diff)
ext4: Convert truncate_mutex to read write semaphore.
We are currently taking the truncate_mutex for every read. This would have performance impact on large CPU configuration. Convert the lock to read write semaphore and take read lock when we are trying to read the file. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Diffstat (limited to 'fs/ext4/super.c')
-rw-r--r--fs/ext4/super.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index effd375ece8..c7305443e10 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -593,7 +593,7 @@ static void init_once(struct kmem_cache *cachep, void *foo)
#ifdef CONFIG_EXT4DEV_FS_XATTR
init_rwsem(&ei->xattr_sem);
#endif
- mutex_init(&ei->truncate_mutex);
+ init_rwsem(&ei->i_data_sem);
inode_init_once(&ei->vfs_inode);
}