On 2/23/20 6:22 AM, Amir Goldstein wrote:
On Sun, Feb 23, 2020 at 4:07 AM Allison Collins
<allison.henderson@xxxxxxxxxx> wrote:
This patch adds a new helper function xfs_attr_node_shrink used to shrink an
attr name into an inode if it is small enough. This helps to modularize
the greater calling function xfs_attr_node_removename.
Signed-off-by: Allison Collins <allison.henderson@xxxxxxxxxx>
---
fs/xfs/libxfs/xfs_attr.c | 66 +++++++++++++++++++++++++++++-------------------
1 file changed, 40 insertions(+), 26 deletions(-)
diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c
index 4b788f2..30a16fe 100644
--- a/fs/xfs/libxfs/xfs_attr.c
+++ b/fs/xfs/libxfs/xfs_attr.c
@@ -1366,6 +1366,43 @@ xfs_attr_node_addname(
}
/*
+ * Shrink an attribute from leaf to shortform
+ */
+STATIC int
+xfs_attr_node_shrink(
+ struct xfs_da_args *args,
+ struct xfs_da_state *state)
+{
+ struct xfs_inode *dp = args->dp;
+ int error, forkoff;
+ struct xfs_buf *bp;
+
+ /*
+ * Have to get rid of the copy of this dabuf in the state.
+ */
+ ASSERT(state->path.active == 1);
+ ASSERT(state->path.blk[0].bp);
+ state->path.blk[0].bp = NULL;
+
+ error = xfs_attr3_leaf_read(args->trans, args->dp, 0, &bp);
+ if (error)
+ return error;
+
+ forkoff = xfs_attr_shortform_allfit(bp, dp);
+ if (forkoff) {
+ error = xfs_attr3_leaf_to_shortform(bp, args, forkoff);
+ /* bp is gone due to xfs_da_shrink_inode */
+ if (error)
+ return error;
+
+ args->dac.flags |= XFS_DAC_FINISH_TRANS;
Why did xfs_defer_finish(&args->trans); turn into the above?
Are you testing reviewers alertness? ;-)
Please keep logic preserving patches separate from logic change patches.
You're right, I missed this when I was separating it from the previous
patch. Will correct. Thanks for the catch!
Allison
Thanks,
Amir.
+ } else
+ xfs_trans_brelse(args->trans, bp);
+
+ return 0;
+}
+
+/*
* Remove a name from a B-tree attribute list.
*
* This will involve walking down the Btree, and may involve joining
@@ -1383,8 +1420,7 @@ xfs_attr_node_removename(
{
struct xfs_da_state *state;
struct xfs_da_state_blk *blk;
- struct xfs_buf *bp;
- int retval, error, forkoff;
+ int retval, error;
struct xfs_inode *dp = args->dp;
trace_xfs_attr_node_removename(args);
@@ -1493,30 +1529,8 @@ xfs_attr_node_removename(
/*
* If the result is small enough, push it all into the inode.
*/
- if (xfs_bmap_one_block(dp, XFS_ATTR_FORK)) {
- /*
- * Have to get rid of the copy of this dabuf in the state.
- */
- ASSERT(state->path.active == 1);
- ASSERT(state->path.blk[0].bp);
- state->path.blk[0].bp = NULL;
-
- error = xfs_attr3_leaf_read(args->trans, args->dp, 0, &bp);
- if (error)
- goto out;
-
- if ((forkoff = xfs_attr_shortform_allfit(bp, dp))) {
- error = xfs_attr3_leaf_to_shortform(bp, args, forkoff);
- /* bp is gone due to xfs_da_shrink_inode */
- if (error)
- goto out;
- error = xfs_defer_finish(&args->trans);
- if (error)
- goto out;
- } else
- xfs_trans_brelse(args->trans, bp);
- }
- error = 0;
+ if (xfs_bmap_one_block(dp, XFS_ATTR_FORK))
+ error = xfs_attr_node_shrink(args, state);
out:
if (state)
--
2.7.4
