From patchwork Sat Jun 30 15:45:02 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [V5,01/23] ext4: Move extra inode read to a new function. From: Tao Ma X-Patchwork-Id: 168302 Message-Id: <1341071124-4976-1-git-send-email-tm@tao.ma> To: linux-ext4@vger.kernel.org Date: Sat, 30 Jun 2012 23:45:02 +0800 From: Tao Ma Currently, in ext4_iget we do a simple check to see whether there does exist some information starting from the end of i_extra_size. With inline data added, this procedure is more complicated. So move it to a new function named ext4_iget_extra_inode. Signed-off-by: Tao Ma --- fs/ext4/inode.c | 16 +++++++++++----- 1 files changed, 11 insertions(+), 5 deletions(-) diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 02bc8cb..21793ea 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -3687,6 +3687,16 @@ static blkcnt_t ext4_inode_blocks(struct ext4_inode *raw_inode, } } +static inline void ext4_iget_extra_inode(struct inode *inode, + struct ext4_inode *raw_inode, + struct ext4_inode_info *ei) +{ + __le32 *magic = (void *)raw_inode + + EXT4_GOOD_OLD_INODE_SIZE + ei->i_extra_isize; + if (*magic == cpu_to_le32(EXT4_XATTR_MAGIC)) + ext4_set_inode_state(inode, EXT4_STATE_XATTR); +} + struct inode *ext4_iget(struct super_block *sb, unsigned long ino) { struct ext4_iloc iloc; @@ -3829,11 +3839,7 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino) ei->i_extra_isize = sizeof(struct ext4_inode) - EXT4_GOOD_OLD_INODE_SIZE; } else { - __le32 *magic = (void *)raw_inode + - EXT4_GOOD_OLD_INODE_SIZE + - ei->i_extra_isize; - if (*magic == cpu_to_le32(EXT4_XATTR_MAGIC)) - ext4_set_inode_state(inode, EXT4_STATE_XATTR); + ext4_iget_extra_inode(inode, raw_inode, ei); } }