Re: [PATCH v2 12/18] xfs: Factor out xfs_attr_rmtval_remove_value

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On 8/12/19 9:27 AM, Darrick J. Wong wrote:
On Fri, Aug 09, 2019 at 02:37:20PM -0700, Allison Collins wrote:
Because new delayed attribute routines cannot roll
transactions, we carve off the parts of
xfs_attr_rmtval_remove that we can use.  This will help to
reduce repetitive code later when we introduce delayed
attributes.

Signed-off-by: Allison Collins <allison.henderson@xxxxxxxxxx>
---
  fs/xfs/libxfs/xfs_attr_remote.c | 25 +++++++++++++++++++------
  fs/xfs/libxfs/xfs_attr_remote.h |  1 +
  2 files changed, 20 insertions(+), 6 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_attr_remote.c b/fs/xfs/libxfs/xfs_attr_remote.c
index c421412..f030365 100644
--- a/fs/xfs/libxfs/xfs_attr_remote.c
+++ b/fs/xfs/libxfs/xfs_attr_remote.c
@@ -586,19 +586,14 @@ xfs_attr_rmtval_set_value(
  	return 0;
  }
-/*
- * Remove the value associated with an attribute by deleting the
- * out-of-line buffer that it is stored on.
- */
  int
-xfs_attr_rmtval_remove(
+xfs_attr_rmtval_remove_value(

This function invalidates the incore buffers, right?  Since _remove
below still does the actual bunmapi work to unmap blocks from the attr
fork?  Would this be better named xfs_attr_rmtval_invalidate()?

Yeah, I struggled with what to call some of these other than "yet one more helper function" that doesn't roll or commit something. xfs_attr_rmtval_invalidate sounds good, I will add that into v3.


  	struct xfs_da_args	*args)
  {
  	struct xfs_mount	*mp = args->dp->i_mount;
  	xfs_dablk_t		lblkno;
  	int			blkcnt;
  	int			error;
-	int			done;
trace_xfs_attr_rmtval_remove(args);

Leave this in xfs_attr_rmtval_remove.


Ok, will move.  Thanks!

Allison

--D

@@ -642,7 +637,25 @@ xfs_attr_rmtval_remove(
  		lblkno += map.br_blockcount;
  		blkcnt -= map.br_blockcount;
  	}
+	return 0;
+}
+/*
+ * Remove the value associated with an attribute by deleting the
+ * out-of-line buffer that it is stored on.
+ */
+int
+xfs_attr_rmtval_remove(
+	struct xfs_da_args      *args)
+{
+	xfs_dablk_t		lblkno;
+	int			blkcnt;
+	int			error = 0;
+	int			done = 0;
+
+	error = xfs_attr_rmtval_remove_value(args);
+	if (error)
+		return error;
  	/*
  	 * Keep de-allocating extents until the remote-value region is gone.
  	 */
diff --git a/fs/xfs/libxfs/xfs_attr_remote.h b/fs/xfs/libxfs/xfs_attr_remote.h
index 2a73cd9..9a58a23 100644
--- a/fs/xfs/libxfs/xfs_attr_remote.h
+++ b/fs/xfs/libxfs/xfs_attr_remote.h
@@ -11,6 +11,7 @@ int xfs_attr3_rmt_blocks(struct xfs_mount *mp, int attrlen);
  int xfs_attr_rmtval_get(struct xfs_da_args *args);
  int xfs_attr_rmtval_set(struct xfs_da_args *args);
  int xfs_attr_rmtval_remove(struct xfs_da_args *args);
+int xfs_attr_rmtval_remove_value(struct xfs_da_args *args);
  int xfs_attr_rmtval_set_value(struct xfs_da_args *args);
  int xfs_attr_rmt_find_hole(struct xfs_da_args *args, int *blkcnt,
  			   xfs_fileoff_t *lfileoff);
--
2.7.4




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