xfs: Add helper function xfs_attr_try_sf_addname

Source kernel commit: 4c74a56b9de76bb6b581274b76b52535ad77c2a7

This patch adds a subroutine xfs_attr_try_sf_addname
used by xfs_attr_set.  This subrotine will attempt to
add the attribute name specified in args in shortform,
as well and perform error handling previously done in
xfs_attr_set.

This patch helps to pre-simplify xfs_attr_set for reviewing
purposes and reduce indentation.  New function will be added
in the next patch.

[dgc: moved commit to helper function, too.]

Signed-off-by: Allison Henderson <allison.henderson@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>

diff --git a/libxfs/xfs_attr.c b/libxfs/xfs_attr.c
index 0f20a571e14e98a56cef084dea87282e8b7c75e1..8910d817e330fd4703fce3a892b43848cd4d11d4 100644 (file)
--- a/libxfs/xfs_attr.c
+++ b/libxfs/xfs_attr.c
@@ -186,6 +186,33 @@ xfs_attr_calc_size(
        return nblks;
 }
 
+STATIC int
+xfs_attr_try_sf_addname(
+       struct xfs_inode        *dp,
+       struct xfs_da_args      *args)
+{
+
+       struct xfs_mount        *mp = dp->i_mount;
+       int                     error, error2;
+
+       error = xfs_attr_shortform_addname(args);
+       if (error == -ENOSPC)
+               return error;
+
+       /*
+        * Commit the shortform mods, and we're done.
+        * NOTE: this is also the error path (EEXIST, etc).
+        */
+       if (!error && (args->flags & ATTR_KERNOTIME) == 0)
+               xfs_trans_ichgtime(args->trans, dp, XFS_ICHGTIME_CHG);
+
+       if (mp->m_flags & XFS_MOUNT_WSYNC)
+               xfs_trans_set_sync(args->trans);
+
+       error2 = xfs_trans_commit(args->trans);
+       return error ? error : error2;
+}
+
 int
 xfs_attr_set(
        struct xfs_inode        *dp,
@@ -199,7 +226,7 @@ xfs_attr_set(
        struct xfs_da_args      args;
        struct xfs_trans_res    tres;
        int                     rsvd = (flags & ATTR_ROOT) != 0;
-       int                     error, err2, local;
+       int                     error, local;
 
        XFS_STATS_INC(mp, xs_attr_set);
 
@@ -276,30 +303,10 @@ xfs_attr_set(
                 * Try to add the attr to the attribute list in
                 * the inode.
                 */
-               error = xfs_attr_shortform_addname(&args);
+               error = xfs_attr_try_sf_addname(dp, &args);
                if (error != -ENOSPC) {
-                       /*
-                        * Commit the shortform mods, and we're done.
-                        * NOTE: this is also the error path (EEXIST, etc).
-                        */
-                       ASSERT(args.trans != NULL);
-
-                       /*
-                        * If this is a synchronous mount, make sure that
-                        * the transaction goes to disk before returning
-                        * to the user.
-                        */
-                       if (mp->m_flags & XFS_MOUNT_WSYNC)
-                               xfs_trans_set_sync(args.trans);
-
-                       if (!error && (flags & ATTR_KERNOTIME) == 0) {
-                               xfs_trans_ichgtime(args.trans, dp,
-                                                       XFS_ICHGTIME_CHG);
-                       }
-                       err2 = xfs_trans_commit(args.trans);
                        xfs_iunlock(dp, XFS_ILOCK_EXCL);
-
-                       return error ? error : err2;
+                       return error;
                }
 
                /*