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Commit f5974c8f authored by Vyacheslav Dubeyko's avatar Vyacheslav Dubeyko Committed by Linus Torvalds
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nilfs2: add omitted comments for different structures in driver implementation 



Add omitted comments for different structures in driver implementation.

Signed-off-by: default avatarVyacheslav Dubeyko <slava@dubeyko.com>
Signed-off-by: default avatarRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 8c74ac05

fs/nilfs2/alloc.h

+11 −3
Original line number Diff line number Diff line
@@ -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;

fs/nilfs2/bmap.h

+7 −0
Original line number Diff line number Diff line
@@ -135,6 +135,13 @@ struct nilfs_bmap { 
/* state */

#define NILFS_BMAP_DIRTY	0x00000001



/**

 * struct nilfs_bmap_store - shadow copy of bmap state

 * @data: cached raw block mapping of on-disk inode

 * @last_allocated_key: cached value of last allocated key for data block

 * @last_allocated_ptr: cached value of last allocated ptr for data block

 * @state: cached value of state field of bmap structure

 */

struct nilfs_bmap_store {

	__le64 data[NILFS_BMAP_SIZE / sizeof(__le64)];

	__u64 last_allocated_key;

fs/nilfs2/btnode.h

+7 −1
Original line number Diff line number Diff line
@@ -29,7 +29,13 @@ 
#include <linux/fs.h>

#include <linux/backing-dev.h>





/**

 * struct nilfs_btnode_chkey_ctxt - change key context

 * @oldkey: old key of block's moving content

 * @newkey: new key for block's content

 * @bh: buffer head of old buffer

 * @newbh: buffer head of new buffer

 */

struct nilfs_btnode_chkey_ctxt {

	__u64 oldkey;

	__u64 newkey;

fs/nilfs2/dat.c

+6 −0
Original line number Diff line number Diff line
@@ -33,6 +33,12 @@ 
#define NILFS_CNO_MIN	((__u64)1)

#define NILFS_CNO_MAX	(~(__u64)0)



/**

 * struct nilfs_dat_info - on-memory private data of DAT file

 * @mi: on-memory private data of metadata file

 * @palloc_cache: persistent object allocator cache of DAT file

 * @shadow: shadow map of DAT file

 */

struct nilfs_dat_info {

	struct nilfs_mdt_info mi;

	struct nilfs_palloc_cache palloc_cache;

fs/nilfs2/export.h

+8 −0
Original line number Diff line number Diff line
@@ -5,6 +5,14 @@ 


extern const struct export_operations nilfs_export_ops;



/**

 * struct nilfs_fid - NILFS file id type

 * @cno: checkpoint number

 * @ino: inode number

 * @gen: file generation (version) for NFS

 * @parent_gen: parent generation (version) for NFS

 * @parent_ino: parent inode number

 */

struct nilfs_fid {

	u64 cno;

	u64 ino;