[PATCH] factor out inode has attrs check

Christoph Hellwig
2008-06-03T11:39:17Z

Note that xfs_attr_fetch did the check twice while keeping the inode
locked and we can just remove the superflous check.

Signed-off-by: Christoph Hellwig <hch@lst.de>

Index: linux-2.6-xfs/fs/xfs/xfs_attr.c
===================================================================
--- linux-2.6-xfs.orig/fs/xfs/xfs_attr.c 2008-06-01 14:32:06.000000000 +0200
+++ linux-2.6-xfs/fs/xfs/xfs_attr.c 2008-06-01 14:40:04.000000000 +0200
@@ -111,6 +111,17 @@ xfs_attr_name_to_xname(
return 0;
}

+STATIC int
+xfs_inode_hasattr(
+ struct xfs_inode *ip)
+{
+ if (!XFS_IFORK_Q(ip) ||
+ (ip->i_d.di_aformat == XFS_DINODE_FMT_EXTENTS &&
+ ip->i_d.di_anextents == 0))
+ return 0;
+ return 1;
+}
+
/*========================================================================
* Overall external interface routines.
*========================================================================*/
@@ -122,10 +133,8 @@ xfs_attr_fetch(xfs_inode_t *ip, struct x
xfs_da_args_t args;
int error;

- if ((XFS_IFORK_Q(ip) == 0) ||
- (ip->i_d.di_aformat == XFS_DINODE_FMT_EXTENTS &&
- ip->i_d.di_anextents == 0))
- return(ENOATTR);
+ if (!xfs_inode_hasattr(ip))
+ return ENOATTR;

/*
* Fill in the arg structure for this request.
@@ -143,11 +152,7 @@ xfs_attr_fetch(xfs_inode_t *ip, struct x
/*
* Decide on what work routines to call based on the inode size.
*/
- if (XFS_IFORK_Q(ip) == 0 ||
- (ip->i_d.di_aformat == XFS_DINODE_FMT_EXTENTS &&
- ip->i_d.di_anextents == 0)) {
- error = XFS_ERROR(ENOATTR);
- } else if (ip->i_d.di_aformat == XFS_DINODE_FMT_LOCAL) {
+ if (ip->i_d.di_aformat == XFS_DINODE_FMT_LOCAL) {
error = xfs_attr_shortform_getvalue(&args);
} else if (xfs_bmap_one_block(ip, XFS_ATTR_FORK)) {
error = xfs_attr_leaf_get(&args);
@@ -523,9 +528,7 @@ xfs_attr_remove_int(xfs_inode_t *dp, str
/*
* Decide on what work routines to call based on the inode size.
*/
- if (XFS_IFORK_Q(dp) == 0 ||
- (dp->i_d.di_aformat == XFS_DINODE_FMT_EXTENTS &&
- dp->i_d.di_anextents == 0)) {
+ if (!xfs_inode_hasattr(dp)) {
error = XFS_ERROR(ENOATTR);
goto out;
}
@@ -595,11 +598,9 @@ xfs_attr_remove(
return error;

xfs_ilock(dp, XFS_ILOCK_SHARED);
- if (XFS_IFORK_Q(dp) == 0 ||
- (dp->i_d.di_aformat == XFS_DINODE_FMT_EXTENTS &&
- dp->i_d.di_anextents == 0)) {
+ if (!xfs_inode_hasattr(dp)) {
xfs_iunlock(dp, XFS_ILOCK_SHARED);
- return(XFS_ERROR(ENOATTR));
+ return XFS_ERROR(ENOATTR);
}
xfs_iunlock(dp, XFS_ILOCK_SHARED);

@@ -615,9 +616,7 @@ xfs_attr_list_int(xfs_attr_list_context_
/*
* Decide on what work routines to call based on the inode size.
*/
- if (XFS_IFORK_Q(dp) == 0 ||
- (dp->i_d.di_aformat == XFS_DINODE_FMT_EXTENTS &&
- dp->i_d.di_anextents == 0)) {
+ if (!xfs_inode_hasattr(dp)) {
error = 0;
} else if (dp->i_d.di_aformat == XFS_DINODE_FMT_LOCAL) {
error = xfs_attr_shortform_list(context);
@@ -810,12 +809,10 @@ xfs_attr_inactive(xfs_inode_t *dp)
ASSERT(! XFS_NOT_DQATTACHED(mp, dp));

xfs_ilock(dp, XFS_ILOCK_SHARED);
- if ((XFS_IFORK_Q(dp) == 0) ||
- (dp->i_d.di_aformat == XFS_DINODE_FMT_LOCAL) ||
- (dp->i_d.di_aformat == XFS_DINODE_FMT_EXTENTS &&
- dp->i_d.di_anextents == 0)) {
+ if (!xfs_inode_hasattr(dp) ||
+ dp->i_d.di_aformat == XFS_DINODE_FMT_LOCAL) {
xfs_iunlock(dp, XFS_ILOCK_SHARED);
- return(0);
+ return 0;
}
xfs_iunlock(dp, XFS_ILOCK_SHARED);

@@ -848,10 +845,8 @@ xfs_attr_inactive(xfs_inode_t *dp)
/*
* Decide on what work routines to call based on the inode size.
*/
- if ((XFS_IFORK_Q(dp) == 0) ||
- (dp->i_d.di_aformat == XFS_DINODE_FMT_LOCAL) ||
- (dp->i_d.di_aformat == XFS_DINODE_FMT_EXTENTS &&
- dp->i_d.di_anextents == 0)) {
+ if (!xfs_inode_hasattr(dp) ||
+ dp->i_d.di_aformat == XFS_DINODE_FMT_LOCAL) {
error = 0;
goto out;
}