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authorVyacheslav Dubeyko <slava@dubeyko.com>2012-07-30 14:42:10 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-07-30 17:25:19 -0700
commitf5974c8f8cf431baf44e7127b669e3b1960f184f (patch)
tree93df5ca85bdb49be8dd6d2ce46e10fb1d6cc9411 /fs/nilfs2/alloc.h
parent8c74ac0557b4cabc9017c2740c5f62b330192416 (diff)
downloadlinux-f5974c8f8cf431baf44e7127b669e3b1960f184f.tar.bz2
nilfs2: add omitted comments for different structures in driver implementation
Add omitted comments for different structures in driver implementation. Signed-off-by: Vyacheslav Dubeyko <slava@dubeyko.com> Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/nilfs2/alloc.h')
-rw-r--r--fs/nilfs2/alloc.h14
1 files changed, 11 insertions, 3 deletions
diff --git a/fs/nilfs2/alloc.h b/fs/nilfs2/alloc.h
index f5fde36b9e28..fb7238100548 100644
--- a/fs/nilfs2/alloc.h
+++ b/fs/nilfs2/alloc.h
@@ -76,15 +76,23 @@ int nilfs_palloc_freev(struct inode *, __u64 *, size_t);
#define nilfs_clear_bit_atomic ext2_clear_bit_atomic
#define nilfs_find_next_zero_bit find_next_zero_bit_le
-/*
- * persistent object allocator cache
+/**
+ * struct nilfs_bh_assoc - block offset and buffer head association
+ * @blkoff: block offset
+ * @bh: buffer head
*/
-
struct nilfs_bh_assoc {
unsigned long blkoff;
struct buffer_head *bh;
};
+/**
+ * struct nilfs_palloc_cache - persistent object allocator cache
+ * @lock: cache protecting lock
+ * @prev_desc: blockgroup descriptors cache
+ * @prev_bitmap: blockgroup bitmap cache
+ * @prev_entry: translation entries cache
+ */
struct nilfs_palloc_cache {
spinlock_t lock;
struct nilfs_bh_assoc prev_desc;