From e348e65a081d761caf72c2753c4e3d67bfb1ef80 Mon Sep 17 00:00:00 2001 From: Yubo Feng Date: Tue, 11 Aug 2020 18:35:56 -0700 Subject: [PATCH] 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 Signed-off-by: Andrew Morton Acked-by: OGAWA Hirofumi Link: http://lkml.kernel.org/r/1593308053-12702-1-git-send-email-fengyubo3@huawei.com Signed-off-by: Linus Torvalds --- fs/fat/file.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/fat/file.c b/fs/fat/file.c index 42134c5..f9ee27c 100644 --- 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); } -- 2.7.4