fatfs: switch write_lock to read_lock in fat_ioctl_get_attributes

There is no need to hold write_lock in fat_ioctl_get_attributes. write_lock may make an impact on concurrency of fat_ioctl_get_attributes. Signed-off-by: Yubo Feng <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Acked-by: OGAWA Hirofumi <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Linus Torvalds <[email protected]>
vieko · Aug 12, 2020 · e348e65 · e348e65
1 parent 88b2e9b
commit e348e65
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/fs/fat/file.c b/fs/fat/file.c
@@ -25,9 +25,9 @@ static int fat_ioctl_get_attributes(struct inode *inode, u32 __user *user_attr)
 {
 	u32 attr;
 
-	inode_lock(inode);
+	inode_lock_shared(inode);
 	attr = fat_make_attrs(inode);
-	inode_unlock(inode);
+	inode_unlock_shared(inode);
 
 	return put_user(attr, user_attr);
 }