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| author |   Dave Chinner <dchinner@redhat.com> | 2018-05-09 07:49:37 -0700 |
|---|---|---|
| committer |   Darrick J. Wong <darrick.wong@oracle.com> | 2018-05-10 08:56:46 -0700 |
| commit | e6631f85546c8ff8842f62c73be44ff502d4287a (patch) | |
| tree | 23d3a8cc1c0a452442c53adefd990bfc81e970c0 /fs/xfs/xfs_trans_buf.c | |
| parent | xfs: add some more debug checks to buffer log item reuse (diff) | |
| download | linux-dev-e6631f85546c8ff8842f62c73be44ff502d4287a.tar.xz linux-dev-e6631f85546c8ff8842f62c73be44ff502d4287a.zip | |
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>
Diffstat (limited to 'fs/xfs/xfs_trans_buf.c')
| -rw-r--r-- | fs/xfs/xfs_trans_buf.c | 22 |
1 files changed, 9 insertions, 13 deletions
diff --git a/fs/xfs/xfs_trans_buf.c b/fs/xfs/xfs_trans_buf.c index 0081e9b3decf..a8ddb4eed279 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; } |