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drbd: Fixed bitmap in case of online-grow without resync

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The "surplus" bits of the old (smaller) bitmap must be clean
in case of online-grow without resync.

Note: Reverted 67ae8b80d4a116ab3b7094eb3723506b20c06dff as
well, since the lines added by this patch are redundant. The
bits get set by the bm_set_surplus(b) call before that.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
This commit is contained in:
Philipp Reisner 2010-04-28 14:46:57 +02:00
parent 6b4388ac1f
commit 5223671bb0
1 changed files with 1 additions and 4 deletions
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5
drivers/block/drbd/drbd_bitmap.c
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@ -519,7 +519,7 @@ int drbd_bm_resize(struct drbd_conf *mdev, sector_t capacity, int set_new_bits)
obits = b->bm_bits;
growing = bits > obits;
if (opages)
if (opages && growing && set_new_bits)
bm_set_surplus(b);
b->bm_pages = npages;
@ -532,9 +532,6 @@ int drbd_bm_resize(struct drbd_conf *mdev, sector_t capacity, int set_new_bits)
if (set_new_bits) {
bm_memset(b, owords, 0xff, words-owords);
b->bm_set += bits - obits;
__bm_change_bits_to(mdev, obits,
ALIGN(obits, BITS_PER_LONG),
1, KM_IRQ1);
} else
bm_memset(b, owords, 0x00, words-owords);