From: Jan Kara Date: Wed, 6 Jan 2010 17:03:36 +0000 (+0100) Subject: quota: Fix dquot_transfer for filesystems different from ext4 X-Git-Tag: v3.12-rc1~11595^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=05b5d898235401c489c68e1f3bc5706a29ad5713;p=kernel%2Fkernel-generic.git quota: Fix dquot_transfer for filesystems different from ext4 Commit fd8fbfc1 modified the way we find amount of reserved space belonging to an inode. The amount of reserved space is checked from dquot_transfer and thus inode_reserved_space gets called even for filesystems that don't provide get_reserved_space callback which results in a BUG. Fix the problem by checking get_reserved_space callback and return 0 if the filesystem does not provide it. CC: Dmitry Monakhov Signed-off-by: Jan Kara --- diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c index dea86ab..3fc62b0 100644 --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -1377,6 +1377,9 @@ static void inode_sub_rsv_space(struct inode *inode, qsize_t number) static qsize_t inode_get_rsv_space(struct inode *inode) { qsize_t ret; + + if (!inode->i_sb->dq_op->get_reserved_space) + return 0; spin_lock(&inode->i_lock); ret = *inode_reserved_space(inode); spin_unlock(&inode->i_lock);