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gfs2: Fix marking bitmaps non-full 

Reservations in gfs can span multiple gfs2_bitmaps (but they won't span
multiple resource groups).  When removing a reservation, we want to
clear the GBF_FULL flags of all involved gfs2_bitmaps, not just that of
the first bitmap.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Reviewed-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Andreas Gruenbacher 2018-09-27 15:30:25 +01:00 committed by Bob Peterson
parent 243fea4df9
commit ec23df2b0c
1 changed files with 11 additions and 2 deletions
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13
fs/gfs2/rgrp.c
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@ -641,7 +641,10 @@ static void __rs_deltree(struct gfs2_blkreserv *rs)
RB_CLEAR_NODE(&rs->rs_node);
if (rs->rs_free) {
struct gfs2_bitmap *bi = rbm_bi(&rs->rs_rbm);
u64 last_block = gfs2_rbm_to_block(&rs->rs_rbm) +
rs->rs_free - 1;
struct gfs2_rbm last_rbm = { .rgd = rs->rs_rbm.rgd, };
struct gfs2_bitmap *start, *last;
/* return reserved blocks to the rgrp */
BUG_ON(rs->rs_rbm.rgd->rd_reserved < rs->rs_free);
@ -652,7 +655,13 @@ static void __rs_deltree(struct gfs2_blkreserv *rs)
it will force the number to be recalculated later. */
rgd->rd_extfail_pt += rs->rs_free;
rs->rs_free = 0;
clear_bit(GBF_FULL, &bi->bi_flags);
if (gfs2_rbm_from_block(&last_rbm, last_block))
return;
start = rbm_bi(&rs->rs_rbm);
last = rbm_bi(&last_rbm);
do
clear_bit(GBF_FULL, &start->bi_flags);
while (start++ != last);
}
}