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nilfs2: unify bmap operations starting use of indirect block address 

This simplifies some low level functions of bmap.

Three bmap pointer operations, nilfs_bmap_start_v(),
nilfs_bmap_commit_v(), and nilfs_bmap_abort_v(), are unified into one
nilfs_bmap_start_v() function. And the related indirect function calls
are replaced with it.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
This commit is contained in:
Ryusuke Konishi 2009-05-03 21:43:01 +09:00
parent 6582207064
commit d97a51a7e3
4 changed files with 14 additions and 45 deletions
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34
fs/nilfs2/bmap.c
View File

@ -511,24 +511,16 @@ static void nilfs_bmap_abort_alloc_v(struct nilfs_bmap *bmap,
nilfs_dat_abort_alloc(nilfs_bmap_get_dat(bmap), &req->bpr_req);
}
static int nilfs_bmap_prepare_start_v(struct nilfs_bmap *bmap,
union nilfs_bmap_ptr_req *req)
{
return nilfs_dat_prepare_start(nilfs_bmap_get_dat(bmap), &req->bpr_req);
}
static void nilfs_bmap_commit_start_v(struct nilfs_bmap *bmap,
union nilfs_bmap_ptr_req *req,
int nilfs_bmap_start_v(struct nilfs_bmap *bmap, union nilfs_bmap_ptr_req *req,
sector_t blocknr)
{
nilfs_dat_commit_start(nilfs_bmap_get_dat(bmap), &req->bpr_req,
blocknr);
}
struct inode *dat = nilfs_bmap_get_dat(bmap);
int ret;
static void nilfs_bmap_abort_start_v(struct nilfs_bmap *bmap,
union nilfs_bmap_ptr_req *req)
{
nilfs_dat_abort_start(nilfs_bmap_get_dat(bmap), &req->bpr_req);
ret = nilfs_dat_prepare_start(dat, &req->bpr_req);
if (likely(!ret))
nilfs_dat_commit_start(dat, &req->bpr_req, blocknr);
return ret;
}
static int nilfs_bmap_prepare_end_v(struct nilfs_bmap *bmap,
@ -636,9 +628,6 @@ static const struct nilfs_bmap_ptr_operations nilfs_bmap_ptr_ops_v = {
.bpop_prepare_alloc_ptr = nilfs_bmap_prepare_alloc_v,
.bpop_commit_alloc_ptr = nilfs_bmap_commit_alloc_v,
.bpop_abort_alloc_ptr = nilfs_bmap_abort_alloc_v,
.bpop_prepare_start_ptr = nilfs_bmap_prepare_start_v,
.bpop_commit_start_ptr = nilfs_bmap_commit_start_v,
.bpop_abort_start_ptr = nilfs_bmap_abort_start_v,
.bpop_prepare_end_ptr = nilfs_bmap_prepare_end_v,
.bpop_commit_end_ptr = nilfs_bmap_commit_end_v,
.bpop_abort_end_ptr = nilfs_bmap_abort_end_v,
@ -650,9 +639,6 @@ static const struct nilfs_bmap_ptr_operations nilfs_bmap_ptr_ops_vmdt = {
.bpop_prepare_alloc_ptr = nilfs_bmap_prepare_alloc_v,
.bpop_commit_alloc_ptr = nilfs_bmap_commit_alloc_v,
.bpop_abort_alloc_ptr = nilfs_bmap_abort_alloc_v,
.bpop_prepare_start_ptr = nilfs_bmap_prepare_start_v,
.bpop_commit_start_ptr = nilfs_bmap_commit_start_v,
.bpop_abort_start_ptr = nilfs_bmap_abort_start_v,
.bpop_prepare_end_ptr = nilfs_bmap_prepare_end_v,
.bpop_commit_end_ptr = nilfs_bmap_commit_end_vmdt,
.bpop_abort_end_ptr = nilfs_bmap_abort_end_v,
@ -664,9 +650,6 @@ static const struct nilfs_bmap_ptr_operations nilfs_bmap_ptr_ops_p = {
.bpop_prepare_alloc_ptr = nilfs_bmap_prepare_alloc_p,
.bpop_commit_alloc_ptr = nilfs_bmap_commit_alloc_p,
.bpop_abort_alloc_ptr = nilfs_bmap_abort_alloc_p,
.bpop_prepare_start_ptr = NULL,
.bpop_commit_start_ptr = NULL,
.bpop_abort_start_ptr = NULL,
.bpop_prepare_end_ptr = NULL,
.bpop_commit_end_ptr = NULL,
.bpop_abort_end_ptr = NULL,
@ -678,9 +661,6 @@ static const struct nilfs_bmap_ptr_operations nilfs_bmap_ptr_ops_gc = {
.bpop_prepare_alloc_ptr = NULL,
.bpop_commit_alloc_ptr = NULL,
.bpop_abort_alloc_ptr = NULL,
.bpop_prepare_start_ptr = NULL,
.bpop_commit_start_ptr = NULL,
.bpop_abort_start_ptr = NULL,
.bpop_prepare_end_ptr = NULL,
.bpop_commit_end_ptr = NULL,
.bpop_abort_end_ptr = NULL,

9
fs/nilfs2/bmap.h
View File

@ -96,13 +96,6 @@ struct nilfs_bmap_ptr_operations {
union nilfs_bmap_ptr_req *);
void (*bpop_abort_alloc_ptr)(struct nilfs_bmap *,
union nilfs_bmap_ptr_req *);
int (*bpop_prepare_start_ptr)(struct nilfs_bmap *,
union nilfs_bmap_ptr_req *);
void (*bpop_commit_start_ptr)(struct nilfs_bmap *,
union nilfs_bmap_ptr_req *,
sector_t);
void (*bpop_abort_start_ptr)(struct nilfs_bmap *,
union nilfs_bmap_ptr_req *);
int (*bpop_prepare_end_ptr)(struct nilfs_bmap *,
union nilfs_bmap_ptr_req *);
void (*bpop_commit_end_ptr)(struct nilfs_bmap *,
@ -183,6 +176,8 @@ void nilfs_bmap_commit_gcdat(struct nilfs_bmap *, struct nilfs_bmap *);
* Internal use only
*/
int nilfs_bmap_start_v(struct nilfs_bmap *, union nilfs_bmap_ptr_req *,
sector_t);
int nilfs_bmap_move_v(const struct nilfs_bmap *, __u64, sector_t);
int nilfs_bmap_mark_dirty(const struct nilfs_bmap *, __u64);

7
fs/nilfs2/btree.c
View File

@ -2066,12 +2066,9 @@ static int nilfs_btree_assign_v(struct nilfs_btree *btree,
ptr = nilfs_btree_node_get_ptr(btree, parent,
path[level + 1].bp_index);
req.bpr_ptr = ptr;
ret = btree->bt_bmap.b_pops->bpop_prepare_start_ptr(&btree->bt_bmap,
&req);
if (ret < 0)
ret = nilfs_bmap_start_v(&btree->bt_bmap, &req, blocknr);
if (unlikely(ret < 0))
return ret;
btree->bt_bmap.b_pops->bpop_commit_start_ptr(&btree->bt_bmap,
&req, blocknr);
key = nilfs_btree_node_get_key(btree, parent,
path[level + 1].bp_index);

7
fs/nilfs2/direct.c
View File

@ -327,12 +327,9 @@ static int nilfs_direct_assign_v(struct nilfs_direct *direct,
int ret;
req.bpr_ptr = ptr;
ret = direct->d_bmap.b_pops->bpop_prepare_start_ptr(
&direct->d_bmap, &req);
if (ret < 0)
ret = nilfs_bmap_start_v(&direct->d_bmap, &req, blocknr);
if (unlikely(ret < 0))
return ret;
direct->d_bmap.b_pops->bpop_commit_start_ptr(&direct->d_bmap,
&req, blocknr);
binfo->bi_v.bi_vblocknr = nilfs_bmap_ptr_to_dptr(ptr);
binfo->bi_v.bi_blkoff = nilfs_bmap_key_to_dkey(key);