xfs: get rid of the log item descriptor
It's just a connector between a transaction and a log item. There's
a 1:1 relationship between a log item descriptor and a log item,
and a 1:1 relationship between a log item descriptor and a
transaction. Both relationships are created and terminated at the
same time, so why do we even have the descriptor?
Replace it with a specific list_head in the log item and a new
log item dirtied flag to replace the XFS_LID_DIRTY flag.
Signed-Off-By: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
[darrick: fix up deferred agfl intent finish_item use of LID_DIRTY]
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
diff --git a/fs/xfs/xfs_trans_buf.c b/fs/xfs/xfs_trans_buf.c
index 0081e9b..a8ddb4e 100644
--- a/fs/xfs/xfs_trans_buf.c
+++ b/fs/xfs/xfs_trans_buf.c
@@ -40,7 +40,7 @@ xfs_trans_buf_item_match(
struct xfs_buf_map *map,
int nmaps)
{
- struct xfs_log_item_desc *lidp;
+ struct xfs_log_item *lip;
struct xfs_buf_log_item *blip;
int len = 0;
int i;
@@ -48,8 +48,8 @@ xfs_trans_buf_item_match(
for (i = 0; i < nmaps; i++)
len += map[i].bm_len;
- list_for_each_entry(lidp, &tp->t_items, lid_trans) {
- blip = (struct xfs_buf_log_item *)lidp->lid_item;
+ list_for_each_entry(lip, &tp->t_items, li_trans) {
+ blip = (struct xfs_buf_log_item *)lip;
if (blip->bli_item.li_type == XFS_LI_BUF &&
blip->bli_buf->b_target == target &&
XFS_BUF_ADDR(blip->bli_buf) == map[0].bm_bn &&
@@ -100,14 +100,10 @@ _xfs_trans_bjoin(
atomic_inc(&bip->bli_refcount);
/*
- * Get a log_item_desc to point at the new item.
+ * Attach the item to the transaction so we can find it in
+ * xfs_trans_get_buf() and friends.
*/
xfs_trans_add_item(tp, &bip->bli_item);
-
- /*
- * Initialize b_fsprivate2 so we can find it with incore_match()
- * in xfs_trans_get_buf() and friends above.
- */
bp->b_transp = tp;
}
@@ -391,7 +387,7 @@ xfs_trans_brelse(
* If the buffer is dirty within this transaction, we can't
* release it until we commit.
*/
- if (bip->bli_item.li_desc->lid_flags & XFS_LID_DIRTY)
+ if (test_bit(XFS_LI_DIRTY, &bip->bli_item.li_flags))
return;
/*
@@ -542,7 +538,7 @@ xfs_trans_dirty_buf(
bip->bli_flags |= XFS_BLI_DIRTY | XFS_BLI_LOGGED;
tp->t_flags |= XFS_TRANS_DIRTY;
- bip->bli_item.li_desc->lid_flags |= XFS_LID_DIRTY;
+ set_bit(XFS_LI_DIRTY, &bip->bli_item.li_flags);
}
/*
@@ -626,7 +622,7 @@ xfs_trans_binval(
ASSERT(!(bip->__bli_format.blf_flags & XFS_BLF_INODE_BUF));
ASSERT(!(bip->__bli_format.blf_flags & XFS_BLFT_MASK));
ASSERT(bip->__bli_format.blf_flags & XFS_BLF_CANCEL);
- ASSERT(bip->bli_item.li_desc->lid_flags & XFS_LID_DIRTY);
+ ASSERT(test_bit(XFS_LI_DIRTY, &bip->bli_item.li_flags));
ASSERT(tp->t_flags & XFS_TRANS_DIRTY);
return;
}
@@ -642,7 +638,7 @@ xfs_trans_binval(
memset(bip->bli_formats[i].blf_data_map, 0,
(bip->bli_formats[i].blf_map_size * sizeof(uint)));
}
- bip->bli_item.li_desc->lid_flags |= XFS_LID_DIRTY;
+ set_bit(XFS_LI_DIRTY, &bip->bli_item.li_flags);
tp->t_flags |= XFS_TRANS_DIRTY;
}