Commit 608eb3ce authored by Darrick J. Wong's avatar Darrick J. Wong
Browse files

xfs: replace open-coded bitmap weight logic 



Add a xbitmap_hweight helper function so that we can get rid of the
open-coded loop.

Signed-off-by: default avatarDarrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: default avatarBrian Foster <bfoster@redhat.com>
parent 00b10d48

fs/xfs/scrub/agheader_repair.c

+2 −10
Original line number Diff line number Diff line
@@ -482,8 +482,6 @@ xrep_agfl_collect_blocks( 
	struct xrep_agfl	ra;

	struct xfs_mount	*mp = sc->mp;

	struct xfs_btree_cur	*cur;

	struct xbitmap_range	*br;

	struct xbitmap_range	*n;

	int			error;



	ra.sc = sc;
@@ -527,14 +525,8 @@ xrep_agfl_collect_blocks( 
	 * Calculate the new AGFL size.  If we found more blocks than fit in

	 * the AGFL we'll free them later.

	 */

	*flcount = 0;

	for_each_xbitmap_extent(br, n, agfl_extents) {

		*flcount += br->len;

		if (*flcount > xfs_agfl_size(mp))

			break;

	}

	if (*flcount > xfs_agfl_size(mp))

		*flcount = xfs_agfl_size(mp);

	*flcount = min_t(uint64_t, xbitmap_hweight(agfl_extents),

			 xfs_agfl_size(mp));

	return 0;



err:

fs/xfs/scrub/bitmap.c

+15 −0
Original line number Diff line number Diff line
@@ -297,3 +297,18 @@ xbitmap_set_btblocks( 
	return xfs_btree_visit_blocks(cur, xbitmap_collect_btblock,

			XFS_BTREE_VISIT_ALL, bitmap);

}



/* How many bits are set in this bitmap? */

uint64_t

xbitmap_hweight(

	struct xbitmap		*bitmap)

{

	struct xbitmap_range	*bmr;

	struct xbitmap_range	*n;

	uint64_t		ret = 0;



	for_each_xbitmap_extent(bmr, n, bitmap)

		ret += bmr->len;



	return ret;

}

fs/xfs/scrub/bitmap.h

+1 −0
Original line number Diff line number Diff line
@@ -32,5 +32,6 @@ int xbitmap_set_btcur_path(struct xbitmap *bitmap, 
		struct xfs_btree_cur *cur);

int xbitmap_set_btblocks(struct xbitmap *bitmap,

		struct xfs_btree_cur *cur);

uint64_t xbitmap_hweight(struct xbitmap *bitmap);



#endif	/* __XFS_SCRUB_BITMAP_H__ */

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