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Commit aa8920c9 authored by Steven Whitehouse's avatar Steven Whitehouse
Browse files

GFS2: Fix one RG corner case 



For filesystems with only a single resource group, we need to be careful
that the allocation loop will not land up with a NULL resource group. This
fixes a bug in a previous patch where the gfs2_rgrpd_get_next() function
was being used instead of gfs2_rgrpd_get_first()

Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
parent 4327a9bf

fs/gfs2/rgrp.c

+2 −1
Original line number Diff line number Diff line
@@ -1776,10 +1776,11 @@ static u32 gfs2_orlov_skip(const struct gfs2_inode *ip) 
static bool gfs2_select_rgrp(struct gfs2_rgrpd **pos, const struct gfs2_rgrpd *begin)

{

	struct gfs2_rgrpd *rgd = *pos;

	struct gfs2_sbd *sdp = rgd->rd_sbd;



	rgd = gfs2_rgrpd_get_next(rgd);

	if (rgd == NULL)

		rgd = gfs2_rgrpd_get_next(NULL);

		rgd = gfs2_rgrpd_get_first(sdp);

	*pos = rgd;

	if (rgd != begin) /* If we didn't wrap */

		return true;