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authorPhilipp Reisner <philipp.reisner@linbit.com>2010-03-24 16:23:03 +0100
committerPhilipp Reisner <philipp.reisner@linbit.com>2010-05-18 01:14:43 +0200
commit02d9a94bbb0d4e0fec8db6735bdc4ccfaac8f0ce (patch)
treef8a2c63b8b84e0aef6d7e8fc920b20c5bb14c1c4 /drivers
parentdrbd: made determin_dev_size's parameter an flag enum (diff)
downloadlinux-02d9a94bbb0d4e0fec8db6735bdc4ccfaac8f0ce.tar.xz
linux-02d9a94bbb0d4e0fec8db6735bdc4ccfaac8f0ce.zip
drbd: Implemented the set_new_bits parameter for drbd_bm_resize()
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/block/drbd/drbd_bitmap.c10
-rw-r--r--drivers/block/drbd/drbd_int.h2
-rw-r--r--drivers/block/drbd/drbd_main.c2
-rw-r--r--drivers/block/drbd/drbd_nl.c2
4 files changed, 10 insertions, 6 deletions
diff --git a/drivers/block/drbd/drbd_bitmap.c b/drivers/block/drbd/drbd_bitmap.c
index 3390716898d5..695fb64cba00 100644
--- a/drivers/block/drbd/drbd_bitmap.c
+++ b/drivers/block/drbd/drbd_bitmap.c
@@ -441,7 +441,7 @@ static void bm_memset(struct drbd_bitmap *b, size_t offset, int c, size_t len)
* In case this is actually a resize, we copy the old bitmap into the new one.
* Otherwise, the bitmap is initialized to all bits set.
*/
-int drbd_bm_resize(struct drbd_conf *mdev, sector_t capacity)
+int drbd_bm_resize(struct drbd_conf *mdev, sector_t capacity, int set_new_bits)
{
struct drbd_bitmap *b = mdev->bitmap;
unsigned long bits, words, owords, obits, *p_addr, *bm;
@@ -526,8 +526,12 @@ int drbd_bm_resize(struct drbd_conf *mdev, sector_t capacity)
b->bm_dev_capacity = capacity;
if (growing) {
- bm_memset(b, owords, 0xff, words-owords);
- b->bm_set += bits - obits;
+ if (set_new_bits) {
+ bm_memset(b, owords, 0xff, words-owords);
+ b->bm_set += bits - obits;
+ } else
+ bm_memset(b, owords, 0x00, words-owords);
+
}
if (want < have) {
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
index f5c56f4fd2a3..37a25a6084dd 100644
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -1311,7 +1311,7 @@ struct bm_extent {
#define APP_R_HSIZE 15
extern int drbd_bm_init(struct drbd_conf *mdev);
-extern int drbd_bm_resize(struct drbd_conf *mdev, sector_t sectors);
+extern int drbd_bm_resize(struct drbd_conf *mdev, sector_t sectors, int set_new_bits);
extern void drbd_bm_cleanup(struct drbd_conf *mdev);
extern void drbd_bm_set_all(struct drbd_conf *mdev);
extern void drbd_bm_clear_all(struct drbd_conf *mdev);
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index e181e405e244..65c2a65d3d64 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -2688,7 +2688,7 @@ void drbd_mdev_cleanup(struct drbd_conf *mdev)
drbd_set_my_capacity(mdev, 0);
if (mdev->bitmap) {
/* maybe never allocated. */
- drbd_bm_resize(mdev, 0);
+ drbd_bm_resize(mdev, 0, 1);
drbd_bm_cleanup(mdev);
}
diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c
index 97abbc2acc5c..360e506426b0 100644
--- a/drivers/block/drbd/drbd_nl.c
+++ b/drivers/block/drbd/drbd_nl.c
@@ -546,7 +546,7 @@ enum determine_dev_size drbd_determin_dev_size(struct drbd_conf *mdev, enum dds_
if (drbd_get_capacity(mdev->this_bdev) != size ||
drbd_bm_capacity(mdev) != size) {
int err;
- err = drbd_bm_resize(mdev, size);
+ err = drbd_bm_resize(mdev, size, !(flags & DDSF_NO_RESYNC));
if (unlikely(err)) {
/* currently there is only one error: ENOMEM! */
size = drbd_bm_capacity(mdev)>>1;