From: Yu Kuai <yukuai3@xxxxxxxxxx>
Currently md-cluster will set bitmap->counts.pages directly, add a
helper to do this to avoid dereferencing bitmap directly.
Noted that after this patch bitmap is not dereferenced directly anymore
and following patches will move the structure inside md-bitmap.c.
Signed-off-by: Yu Kuai <yukuai3@xxxxxxxxxx>
---
drivers/md/md-bitmap.c | 6 ++++++
drivers/md/md-bitmap.h | 1 +
drivers/md/md-cluster.c | 4 +---
3 files changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c
index 918510f36e33..015997b4b835 100644
--- a/drivers/md/md-bitmap.c
+++ b/drivers/md/md-bitmap.c
@@ -2094,6 +2094,12 @@ int md_bitmap_copy_from_slot(struct mddev *mddev, int slot,
}
EXPORT_SYMBOL_GPL(md_bitmap_copy_from_slot);
+void md_bitmap_set_pages(struct bitmap *bitmap, unsigned long pages)
+{
+ bitmap->counts.pages = pages;
+}
+EXPORT_SYMBOL_GPL(md_bitmap_set_pages);
+
int md_bitmap_get_stats(struct bitmap *bitmap, struct md_bitmap_stats *stats)
{
struct bitmap_storage *storage;
diff --git a/drivers/md/md-bitmap.h b/drivers/md/md-bitmap.h
index 909a661383c6..c4d64311c0e8 100644
--- a/drivers/md/md-bitmap.h
+++ b/drivers/md/md-bitmap.h
@@ -285,6 +285,7 @@ int md_bitmap_resize(struct bitmap *bitmap, sector_t blocks,
struct bitmap *get_bitmap_from_slot(struct mddev *mddev, int slot);
int md_bitmap_copy_from_slot(struct mddev *mddev, int slot,
sector_t *lo, sector_t *hi, bool clear_bits);
+void md_bitmap_set_pages(struct bitmap *bitmap, unsigned long pages);
void md_bitmap_free(struct bitmap *bitmap);
void md_bitmap_wait_behind_writes(struct mddev *mddev);
diff --git a/drivers/md/md-cluster.c b/drivers/md/md-cluster.c
index 76febdc5d7f6..59f7fbca783b 100644
--- a/drivers/md/md-cluster.c
+++ b/drivers/md/md-cluster.c
@@ -1163,7 +1163,6 @@ static int resize_bitmaps(struct mddev *mddev, sector_t newsize, sector_t oldsiz
for (i = 0; i < mddev->bitmap_info.nodes; i++) {
struct dlm_lock_resource *bm_lockres;
- struct bitmap_counts *counts;
char str[64];
if (i == md_cluster_ops->slot_number(mddev))
@@ -1175,7 +1174,6 @@ static int resize_bitmaps(struct mddev *mddev, sector_t newsize, sector_t oldsiz
bitmap = NULL;
goto out;
}
- counts = &bitmap->counts;
rv = md_bitmap_get_stats(bitmap, &stats);
if (rv)
@@ -1193,7 +1191,7 @@ static int resize_bitmaps(struct mddev *mddev, sector_t newsize, sector_t oldsiz
bm_lockres->flags |= DLM_LKF_NOQUEUE;
rv = dlm_lock_sync(bm_lockres, DLM_LOCK_PW);
if (!rv)
- counts->pages = my_pages;
+ md_bitmap_set_pages(bitmap, my_pages);
lockres_free(bm_lockres);
if (my_pages != stats.pages)
--
2.39.2
