From 3b10fdc6d8bd048f4fb14af5eda2051ace7b8b16 Mon Sep 17 00:00:00 2001 From: Miao Xie Date: Sun, 6 Aug 2017 00:27:38 -0400 Subject: ext4: fix forgetten xattr lock protection in ext4_expand_extra_isize We should avoid the contention between the i_extra_isize update and the inline data insertion, so move the xattr trylock in front of i_extra_isize update. Signed-off-by: Miao Xie Reviewed-by: Wang Shilong --- fs/ext4/xattr.c | 10 ---------- 1 file changed, 10 deletions(-) (limited to 'fs/ext4/xattr.c') diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c index 5fa912e5d2a6..862ba3891398 100644 --- a/fs/ext4/xattr.c +++ b/fs/ext4/xattr.c @@ -2645,10 +2645,6 @@ int ext4_expand_extra_isize_ea(struct inode *inode, int new_extra_isize, int error = 0, tried_min_extra_isize = 0; int s_min_extra_isize = le16_to_cpu(EXT4_SB(inode->i_sb)->s_es->s_min_extra_isize); int isize_diff; /* How much do we need to grow i_extra_isize */ - int no_expand; - - if (ext4_write_trylock_xattr(inode, &no_expand) == 0) - return 0; retry: isize_diff = new_extra_isize - EXT4_I(inode)->i_extra_isize; @@ -2731,16 +2727,10 @@ shift: EXT4_I(inode)->i_extra_isize = new_extra_isize; brelse(bh); out: - ext4_write_unlock_xattr(inode, &no_expand); return 0; cleanup: brelse(bh); - /* - * Inode size expansion failed; don't try again - */ - no_expand = 1; - ext4_write_unlock_xattr(inode, &no_expand); return error; } -- cgit v1.2.3