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xfs: refactor xfs_iread_extents to use xfs_btree_visit_blocks

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xfs_iread_extents open-codes everything in xfs_btree_visit_blocks, so
refactor the btree helper to be able to iterate only the records on
level 0, then port iread_extents to use it.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Darrick J. Wong
2019-10-28 16:12:35 -07:00
parent fec40e220f
commit e992ae8afd
4 changed files with 96 additions and 119 deletions
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10
fs/xfs/libxfs/xfs_btree.c
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@@ -4286,6 +4286,7 @@ int
xfs_btree_visit_blocks(
struct xfs_btree_cur *cur,
xfs_btree_visit_blocks_fn fn,
unsigned int flags,
void *data)
{
union xfs_btree_ptr lptr;
@@ -4311,6 +4312,11 @@ xfs_btree_visit_blocks(
/* save for the next iteration of the loop */
xfs_btree_copy_ptrs(cur, &lptr, ptr, 1);
if (!(flags & XFS_BTREE_VISIT_LEAVES))
continue;
} else if (!(flags & XFS_BTREE_VISIT_RECORDS)) {
continue;
}
/* for each buffer in the level */
@@ -4413,7 +4419,7 @@ xfs_btree_change_owner(
bbcoi.buffer_list = buffer_list;
return xfs_btree_visit_blocks(cur, xfs_btree_block_change_owner,
&bbcoi);
XFS_BTREE_VISIT_ALL, &bbcoi);
}
/* Verify the v5 fields of a long-format btree block. */
@@ -4865,7 +4871,7 @@ xfs_btree_count_blocks(
{
*blocks = 0;
return xfs_btree_visit_blocks(cur, xfs_btree_count_blocks_helper,
blocks);
XFS_BTREE_VISIT_ALL, blocks);
}
/* Compare two btree pointers. */