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| author | Yu Kuai <yukuai3@huawei.com> | 2024-08-26 15:44:16 +0800 |
|---|---|---|
| committer | Song Liu <song@kernel.org> | 2024-08-27 10:14:15 -0700 |
| commit | ec6bb299c7c3dd4ca1724d13d5f5fae3ee54fc65 (patch) | |
| tree | 01c310778a0fa5ee221708e9f7fac84c4677b327 /drivers/md/md-bitmap.c | |
| parent | 82697ccf7e495c1ba81e315c2886d6220ff84c2c (diff) | |
| download | lwn-ec6bb299c7c3dd4ca1724d13d5f5fae3ee54fc65.tar.gz lwn-ec6bb299c7c3dd4ca1724d13d5f5fae3ee54fc65.zip | |
md/md-bitmap: add 'sync_size' into struct md_bitmap_stats
To avoid dereferencing bitmap directly in md-cluster to prepare
inventing a new bitmap.
BTW, also fix following checkpatch warnings:
WARNING: Deprecated use of 'kmap_atomic', prefer 'kmap_local_page' instead
WARNING: Deprecated use of 'kunmap_atomic', prefer 'kunmap_local' instead
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240826074452.1490072-7-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
Diffstat (limited to 'drivers/md/md-bitmap.c')
| -rw-r--r-- | drivers/md/md-bitmap.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c index 95afc22bd255..33812543d984 100644 --- a/drivers/md/md-bitmap.c +++ b/drivers/md/md-bitmap.c @@ -2097,10 +2097,15 @@ EXPORT_SYMBOL_GPL(md_bitmap_copy_from_slot); int md_bitmap_get_stats(struct bitmap *bitmap, struct md_bitmap_stats *stats) { struct bitmap_counts *counts; + bitmap_super_t *sb; if (!bitmap) return -ENOENT; + sb = kmap_local_page(bitmap->storage.sb_page); + stats->sync_size = le64_to_cpu(sb->sync_size); + kunmap_local(sb); + counts = &bitmap->counts; stats->missing_pages = counts->missing_pages; stats->pages = counts->pages; @@ -2110,6 +2115,7 @@ int md_bitmap_get_stats(struct bitmap *bitmap, struct md_bitmap_stats *stats) return 0; } +EXPORT_SYMBOL_GPL(md_bitmap_get_stats); int md_bitmap_resize(struct bitmap *bitmap, sector_t blocks, int chunksize, int init) |