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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2010-09-05 00:23:50 +0900
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2010-10-23 09:24:38 +0900
commitc6e071884aca360a14c21757d760e76ec34b4894 (patch)
tree341d4130f06f1063bd63ed8a8cdb3f602848ff17
parent032dbb3b503a30fce732ec4c05525d0abed1f1d6 (diff)
downloadlinux-c6e071884aca360a14c21757d760e76ec34b4894.tar.gz
nilfs2: get rid of mi_nilfs back pointer to nilfs object
This removes a back pointer to nilfs object from nilfs_mdt_info structure that is attached to metadata files. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
-rw-r--r--fs/nilfs2/mdt.c9
-rw-r--r--fs/nilfs2/mdt.h8
-rw-r--r--fs/nilfs2/sufile.c4
-rw-r--r--fs/nilfs2/sufile.h2
4 files changed, 8 insertions, 15 deletions
diff --git a/fs/nilfs2/mdt.c b/fs/nilfs2/mdt.c
index 44326cfe1fa..32695f3c4b9 100644
--- a/fs/nilfs2/mdt.c
+++ b/fs/nilfs2/mdt.c
@@ -78,7 +78,7 @@ static int nilfs_mdt_create_block(struct inode *inode, unsigned long block,
struct buffer_head *,
void *))
{
- struct the_nilfs *nilfs = NILFS_MDT(inode)->mi_nilfs;
+ struct the_nilfs *nilfs = NILFS_I_NILFS(inode);
struct super_block *sb = inode->i_sb;
struct nilfs_transaction_info ti;
struct buffer_head *bh;
@@ -167,9 +167,7 @@ nilfs_mdt_submit_block(struct inode *inode, unsigned long blkoff,
unlock_buffer(bh);
goto failed_bh;
}
- bh->b_bdev = NILFS_MDT(inode)->mi_nilfs->ns_bdev;
- bh->b_blocknr = (sector_t)blknum;
- set_buffer_mapped(bh);
+ map_bh(bh, inode->i_sb, (sector_t)blknum);
bh->b_end_io = end_buffer_read_sync;
get_bh(bh);
@@ -412,7 +410,7 @@ nilfs_mdt_write_page(struct page *page, struct writeback_control *wbc)
return 0;
sb = inode->i_sb;
- nilfs = NILFS_MDT(inode)->mi_nilfs;
+ nilfs = NILFS_SB(sb)->s_nilfs;
if (!sb) {
down_read(&nilfs->ns_writer_sem);
@@ -452,7 +450,6 @@ int nilfs_mdt_init(struct inode *inode, gfp_t gfp_mask, size_t objsz)
if (!mi)
return -ENOMEM;
- mi->mi_nilfs = NILFS_I_NILFS(inode);
init_rwsem(&mi->mi_sem);
inode->i_private = mi;
diff --git a/fs/nilfs2/mdt.h b/fs/nilfs2/mdt.h
index 73ff7c05571..76356d2899e 100644
--- a/fs/nilfs2/mdt.h
+++ b/fs/nilfs2/mdt.h
@@ -37,7 +37,6 @@ struct nilfs_shadow_map {
/**
* struct nilfs_mdt_info - on-memory private data of meta data files
- * @mi_nilfs: back pointer to the_nilfs struct
* @mi_sem: reader/writer semaphore for meta data operations
* @mi_bgl: per-blockgroup locking
* @mi_entry_size: size of an entry
@@ -49,7 +48,6 @@ struct nilfs_shadow_map {
* @mi_blocks_per_desc_block: number of blocks per descriptor block
*/
struct nilfs_mdt_info {
- struct the_nilfs *mi_nilfs;
struct rw_semaphore mi_sem;
struct blockgroup_lock *mi_bgl;
unsigned mi_entry_size;
@@ -68,9 +66,7 @@ static inline struct nilfs_mdt_info *NILFS_MDT(const struct inode *inode)
static inline struct the_nilfs *NILFS_I_NILFS(struct inode *inode)
{
- struct super_block *sb = inode->i_sb;
-
- return sb ? NILFS_SB(sb)->s_nilfs : NILFS_MDT(inode)->mi_nilfs;
+ return NILFS_SB(inode->i_sb)->s_nilfs;
}
/* Default GFP flags using highmem */
@@ -117,7 +113,7 @@ static inline void nilfs_mdt_clear_dirty(struct inode *inode)
static inline __u64 nilfs_mdt_cno(struct inode *inode)
{
- return NILFS_MDT(inode)->mi_nilfs->ns_cno;
+ return NILFS_I_NILFS(inode)->ns_cno;
}
#define nilfs_mdt_bgl_lock(inode, bg) \
diff --git a/fs/nilfs2/sufile.c b/fs/nilfs2/sufile.c
index 599d9c27761..1d6f488ccae 100644
--- a/fs/nilfs2/sufile.c
+++ b/fs/nilfs2/sufile.c
@@ -505,7 +505,7 @@ int nilfs_sufile_get_stat(struct inode *sufile, struct nilfs_sustat *sustat)
{
struct buffer_head *header_bh;
struct nilfs_sufile_header *header;
- struct the_nilfs *nilfs = NILFS_MDT(sufile)->mi_nilfs;
+ struct the_nilfs *nilfs = NILFS_I_NILFS(sufile);
void *kaddr;
int ret;
@@ -583,7 +583,7 @@ ssize_t nilfs_sufile_get_suinfo(struct inode *sufile, __u64 segnum, void *buf,
struct nilfs_segment_usage *su;
struct nilfs_suinfo *si = buf;
size_t susz = NILFS_MDT(sufile)->mi_entry_size;
- struct the_nilfs *nilfs = NILFS_MDT(sufile)->mi_nilfs;
+ struct the_nilfs *nilfs = NILFS_I_NILFS(sufile);
void *kaddr;
unsigned long nsegs, segusages_per_block;
ssize_t n;
diff --git a/fs/nilfs2/sufile.h b/fs/nilfs2/sufile.h
index 203f6102a62..a943fbacb45 100644
--- a/fs/nilfs2/sufile.h
+++ b/fs/nilfs2/sufile.h
@@ -31,7 +31,7 @@
static inline unsigned long nilfs_sufile_get_nsegments(struct inode *sufile)
{
- return NILFS_MDT(sufile)->mi_nilfs->ns_nsegments;
+ return NILFS_I_NILFS(sufile)->ns_nsegments;
}
unsigned long nilfs_sufile_get_ncleansegs(struct inode *sufile);