diff options
Diffstat (limited to 'fs/ocfs2/ocfs2_fs.h')
| -rw-r--r-- | fs/ocfs2/ocfs2_fs.h | 37 |
1 files changed, 25 insertions, 12 deletions
diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h index a17bce591ee3..67bb8a77e868 100644 --- a/fs/ocfs2/ocfs2_fs.h +++ b/fs/ocfs2/ocfs2_fs.h @@ -1338,15 +1338,21 @@ static inline u16 ocfs2_local_alloc_size(struct super_block *sb) } static inline int ocfs2_group_bitmap_size(struct super_block *sb, - int suballocator) + int suballocator, + u32 feature_incompat) { - int size; + int size = sb->s_blocksize - + offsetof(struct ocfs2_group_desc, bg_bitmap); - if (suballocator) + /* + * The cluster allocator uses the entire block. Suballocators have + * never used more than OCFS2_MAX_BG_BITMAP_SIZE. Unfortunately, older + * code expects bg_size set to the maximum. Thus we must keep + * bg_size as-is unless discontig_bg is enabled. + */ + if (suballocator && + (feature_incompat & OCFS2_FEATURE_INCOMPAT_DISCONTIG_BG)) size = OCFS2_MAX_BG_BITMAP_SIZE; - else - size = sb->s_blocksize - - offsetof(struct ocfs2_group_desc, bg_bitmap); return size; } @@ -1479,15 +1485,22 @@ static inline int ocfs2_local_alloc_size(int blocksize) return size; } -static inline int ocfs2_group_bitmap_size(int blocksize, int suballocator) +static inline int ocfs2_group_bitmap_size(int blocksize, + int suballocator, + uint32_t feature_incompat) { - int size; + int size = sb->s_blocksize - + offsetof(struct ocfs2_group_desc, bg_bitmap); - if (suballocator) + /* + * The cluster allocator uses the entire block. Suballocators have + * never used more than OCFS2_MAX_BG_BITMAP_SIZE. Unfortunately, older + * code expects bg_size set to the maximum. Thus we must keep + * bg_size as-is unless discontig_bg is enabled. + */ + if (suballocator && + (feature_incompat & OCFS2_FEATURE_INCOMPAT_DISCONTIG_BG)) size = OCFS2_MAX_BG_BITMAP_SIZE; - else - size = blocksize - - offsetof(struct ocfs2_group_desc, bg_bitmap); return size; } |