[PATCH RESEND v18 03/11] xfs: Hoist xfs_attr_set_shortform

Allison Henderson
2021-05-12T17:06:17Z

This patch hoists xfs_attr_set_shortform into the calling function. This
will help keep all state management code in the same scope.

Signed-off-by: Allison Henderson <allison.henderson@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com>
---
fs/xfs/libxfs/xfs_attr.c | 81 ++++++++++++++++--------------------------------
1 file changed, 27 insertions(+), 54 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c
index 8a08d5b..32133a0 100644
--- a/fs/xfs/libxfs/xfs_attr.c
+++ b/fs/xfs/libxfs/xfs_attr.c
@@ -237,53 +237,6 @@ xfs_attr_is_shortform(
}

/*
- * Attempts to set an attr in shortform, or converts short form to leaf form if
- * there is not enough room. If the attr is set, the transaction is committed
- * and set to NULL.
- */
-STATIC int
-xfs_attr_set_shortform(
- struct xfs_da_args *args,
- struct xfs_buf **leaf_bp)
-{
- struct xfs_inode *dp = args->dp;
- int error, error2 = 0;
-
- /*
- * Try to add the attr to the attribute list in the inode.
- */
- error = xfs_attr_try_sf_addname(dp, args);
- if (error != -ENOSPC) {
- error2 = xfs_trans_commit(args->trans);
- args->trans = NULL;
- return error ? error : error2;
- }
- /*
- * It won't fit in the shortform, transform to a leaf block. GROT:
- * another possible req'mt for a double-split btree op.
- */
- error = xfs_attr_shortform_to_leaf(args, leaf_bp);
- if (error)
- return error;
-
- /*
- * Prevent the leaf buffer from being unlocked so that a concurrent AIL
- * push cannot grab the half-baked leaf buffer and run into problems
- * with the write verifier. Once we're done rolling the transaction we
- * can release the hold and add the attr to the leaf.
- */
- xfs_trans_bhold(args->trans, *leaf_bp);
- error = xfs_defer_finish(&args->trans);
- xfs_trans_bhold_release(args->trans, *leaf_bp);
- if (error) {
- xfs_trans_brelse(args->trans, *leaf_bp);
- return error;
- }
-
- return 0;
-}
-
-/*
* Set the attribute specified in @args.
*/
int
@@ -292,7 +245,7 @@ xfs_attr_set_args(
{
struct xfs_inode *dp = args->dp;
struct xfs_buf *leaf_bp = NULL;
- int error = 0;
+ int error2, error = 0;

/*
* If the attribute list is already in leaf format, jump straight to
@@ -301,16 +254,36 @@ xfs_attr_set_args(
* again.
*/
if (xfs_attr_is_shortform(dp)) {
+ /*
+ * Try to add the attr to the attribute list in the inode.
+ */
+ error = xfs_attr_try_sf_addname(dp, args);
+ if (error != -ENOSPC) {
+ error2 = xfs_trans_commit(args->trans);
+ args->trans = NULL;
+ return error ? error : error2;
+ }
+
+ /*
+ * It won't fit in the shortform, transform to a leaf block.
+ * GROT: another possible req'mt for a double-split btree op.
+ */
+ error = xfs_attr_shortform_to_leaf(args, &leaf_bp);
+ if (error)
+ return error;

/*
- * If the attr was successfully set in shortform, the
- * transaction is committed and set to NULL. Otherwise, is it
- * converted from shortform to leaf, and the transaction is
- * retained.
+ * Prevent the leaf buffer from being unlocked so that a
+ * concurrent AIL push cannot grab the half-baked leaf buffer
+ * and run into problems with the write verifier.
*/
- error = xfs_attr_set_shortform(args, &leaf_bp);
- if (error || !args->trans)
+ xfs_trans_bhold(args->trans, leaf_bp);
+ error = xfs_defer_finish(&args->trans);
+ xfs_trans_bhold_release(args->trans, leaf_bp);
+ if (error) {
+ xfs_trans_brelse(args->trans, leaf_bp);
return error;
+ }
}

if (xfs_attr_is_leaf(dp)) {
--
2.7.4