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md/md-bitmap: merge md_bitmap_enabled() into bitmap_operations

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So that the implementation won't be exposed, and it'll be possible
to invent a new bitmap by replacing bitmap_operations.

Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240826074452.1490072-42-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
This commit is contained in:
Yu Kuai 2024-08-26 15:44:51 +08:00 committed by Song Liu
parent 49f5f5e309
commit dab2ce5534
3 changed files with 20 additions and 9 deletions
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19
drivers/md/md-bitmap.c
View file

@ -40,6 +40,22 @@ static inline char *bmname(struct bitmap *bitmap)
return bitmap->mddev ? mdname(bitmap->mddev) : "mdX";
}
static bool __bitmap_enabled(struct bitmap *bitmap)
{
return bitmap->storage.filemap &&
!test_bit(BITMAP_STALE, &bitmap->flags);
}
static bool bitmap_enabled(struct mddev *mddev)
{
struct bitmap *bitmap = mddev->bitmap;
if (!bitmap)
return false;
return __bitmap_enabled(bitmap);
}
/*
* check a page and, if necessary, allocate it (or hijack it if the alloc fails)
*
@ -1035,7 +1051,7 @@ static void __bitmap_unplug(struct bitmap *bitmap)
int dirty, need_write;
int writing = 0;
if (!md_bitmap_enabled(bitmap))
if (!__bitmap_enabled(bitmap))
return;
/* look at each page to see if there are any set bits that need to be
@ -2753,6 +2769,7 @@ const struct attribute_group md_bitmap_group = {
};
static struct bitmap_operations bitmap_ops = {
.enabled = bitmap_enabled,
.create = bitmap_create,
.resize = bitmap_resize,
.load = bitmap_load,

8
drivers/md/md-bitmap.h
View file

@ -247,6 +247,7 @@ struct md_bitmap_stats {
};
struct bitmap_operations {
bool (*enabled)(struct mddev *mddev);
int (*create)(struct mddev *mddev, int slot);
int (*resize)(struct mddev *mddev, sector_t blocks, int chunksize,
bool init);
@ -287,12 +288,5 @@ struct bitmap_operations {
/* the bitmap API */
void mddev_set_bitmap_ops(struct mddev *mddev);
static inline bool md_bitmap_enabled(struct bitmap *bitmap)
{
return bitmap && bitmap->storage.filemap &&
!test_bit(BITMAP_STALE, &bitmap->flags);
}
#endif
#endif

2
drivers/md/raid1-10.c
View file

@ -140,7 +140,7 @@ static inline bool raid1_add_bio_to_plug(struct mddev *mddev, struct bio *bio,
* If bitmap is not enabled, it's safe to submit the io directly, and
* this can get optimal performance.
*/
if (!md_bitmap_enabled(mddev->bitmap)) {
if (!mddev->bitmap_ops->enabled(mddev)) {
raid1_submit_write(bio);
return true;
}