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-rw-r--r--fs/nilfs2/bmap.c272
1 files changed, 73 insertions, 199 deletions
diff --git a/fs/nilfs2/bmap.c b/fs/nilfs2/bmap.c
index 064279e33bb..36df60b6d8a 100644
--- a/fs/nilfs2/bmap.c
+++ b/fs/nilfs2/bmap.c
@@ -31,21 +31,26 @@
#include "dat.h"
#include "alloc.h"
+struct inode *nilfs_bmap_get_dat(const struct nilfs_bmap *bmap)
+{
+ return nilfs_dat_inode(NILFS_I_NILFS(bmap->b_inode));
+}
+
int nilfs_bmap_lookup_at_level(struct nilfs_bmap *bmap, __u64 key, int level,
__u64 *ptrp)
{
- __u64 ptr;
+ sector_t blocknr;
int ret;
down_read(&bmap->b_sem);
ret = bmap->b_ops->bop_lookup(bmap, key, level, ptrp);
if (ret < 0)
goto out;
- if (bmap->b_pops->bpop_translate != NULL) {
- ret = bmap->b_pops->bpop_translate(bmap, *ptrp, &ptr);
- if (ret < 0)
- goto out;
- *ptrp = ptr;
+ if (NILFS_BMAP_USE_VBN(bmap)) {
+ ret = nilfs_dat_translate(nilfs_bmap_get_dat(bmap), *ptrp,
+ &blocknr);
+ if (!ret)
+ *ptrp = blocknr;
}
out:
@@ -53,6 +58,16 @@ int nilfs_bmap_lookup_at_level(struct nilfs_bmap *bmap, __u64 key, int level,
return ret;
}
+int nilfs_bmap_lookup_contig(struct nilfs_bmap *bmap, __u64 key, __u64 *ptrp,
+ unsigned maxblocks)
+{
+ int ret;
+
+ down_read(&bmap->b_sem);
+ ret = bmap->b_ops->bop_lookup_contig(bmap, key, ptrp, maxblocks);
+ up_read(&bmap->b_sem);
+ return ret;
+}
/**
* nilfs_bmap_lookup - find a record
@@ -101,8 +116,7 @@ static int nilfs_bmap_do_insert(struct nilfs_bmap *bmap, __u64 key, __u64 ptr)
if (n < 0)
return n;
ret = nilfs_btree_convert_and_insert(
- bmap, key, ptr, keys, ptrs, n,
- NILFS_BMAP_LARGE_LOW, NILFS_BMAP_LARGE_HIGH);
+ bmap, key, ptr, keys, ptrs, n);
if (ret == 0)
bmap->b_u.u_flags |= NILFS_BMAP_LARGE;
@@ -158,8 +172,7 @@ static int nilfs_bmap_do_delete(struct nilfs_bmap *bmap, __u64 key)
if (n < 0)
return n;
ret = nilfs_direct_delete_and_convert(
- bmap, key, keys, ptrs, n,
- NILFS_BMAP_SMALL_LOW, NILFS_BMAP_SMALL_HIGH);
+ bmap, key, keys, ptrs, n);
if (ret == 0)
bmap->b_u.u_flags &= ~NILFS_BMAP_LARGE;
@@ -417,38 +430,6 @@ void nilfs_bmap_sub_blocks(const struct nilfs_bmap *bmap, int n)
mark_inode_dirty(bmap->b_inode);
}
-int nilfs_bmap_get_block(const struct nilfs_bmap *bmap, __u64 ptr,
- struct buffer_head **bhp)
-{
- return nilfs_btnode_get(&NILFS_BMAP_I(bmap)->i_btnode_cache,
- ptr, 0, bhp, 0);
-}
-
-void nilfs_bmap_put_block(const struct nilfs_bmap *bmap,
- struct buffer_head *bh)
-{
- brelse(bh);
-}
-
-int nilfs_bmap_get_new_block(const struct nilfs_bmap *bmap, __u64 ptr,
- struct buffer_head **bhp)
-{
- int ret;
-
- ret = nilfs_btnode_get(&NILFS_BMAP_I(bmap)->i_btnode_cache,
- ptr, 0, bhp, 1);
- if (ret < 0)
- return ret;
- set_buffer_nilfs_volatile(*bhp);
- return 0;
-}
-
-void nilfs_bmap_delete_block(const struct nilfs_bmap *bmap,
- struct buffer_head *bh)
-{
- nilfs_btnode_delete(bh);
-}
-
__u64 nilfs_bmap_data_get_key(const struct nilfs_bmap *bmap,
const struct buffer_head *bh)
{
@@ -476,11 +457,6 @@ __u64 nilfs_bmap_find_target_seq(const struct nilfs_bmap *bmap, __u64 key)
return NILFS_BMAP_INVALID_PTR;
}
-static struct inode *nilfs_bmap_get_dat(const struct nilfs_bmap *bmap)
-{
- return nilfs_dat_inode(NILFS_I_NILFS(bmap->b_inode));
-}
-
#define NILFS_BMAP_GROUP_DIV 8
__u64 nilfs_bmap_find_target_in_group(const struct nilfs_bmap *bmap)
{
@@ -493,64 +469,51 @@ __u64 nilfs_bmap_find_target_in_group(const struct nilfs_bmap *bmap)
(entries_per_group / NILFS_BMAP_GROUP_DIV);
}
-static int nilfs_bmap_prepare_alloc_v(struct nilfs_bmap *bmap,
- union nilfs_bmap_ptr_req *req)
+int nilfs_bmap_prepare_alloc_v(struct nilfs_bmap *bmap,
+ union nilfs_bmap_ptr_req *req)
{
return nilfs_dat_prepare_alloc(nilfs_bmap_get_dat(bmap), &req->bpr_req);
}
-static void nilfs_bmap_commit_alloc_v(struct nilfs_bmap *bmap,
- union nilfs_bmap_ptr_req *req)
+void nilfs_bmap_commit_alloc_v(struct nilfs_bmap *bmap,
+ union nilfs_bmap_ptr_req *req)
{
nilfs_dat_commit_alloc(nilfs_bmap_get_dat(bmap), &req->bpr_req);
}
-static void nilfs_bmap_abort_alloc_v(struct nilfs_bmap *bmap,
- union nilfs_bmap_ptr_req *req)
+void nilfs_bmap_abort_alloc_v(struct nilfs_bmap *bmap,
+ union nilfs_bmap_ptr_req *req)
{
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)
+int nilfs_bmap_start_v(struct nilfs_bmap *bmap, union nilfs_bmap_ptr_req *req,
+ sector_t blocknr)
{
- 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,
- 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,
- union nilfs_bmap_ptr_req *req)
+int nilfs_bmap_prepare_end_v(struct nilfs_bmap *bmap,
+ union nilfs_bmap_ptr_req *req)
{
return nilfs_dat_prepare_end(nilfs_bmap_get_dat(bmap), &req->bpr_req);
}
-static void nilfs_bmap_commit_end_v(struct nilfs_bmap *bmap,
- union nilfs_bmap_ptr_req *req)
-{
- nilfs_dat_commit_end(nilfs_bmap_get_dat(bmap), &req->bpr_req, 0);
-}
-
-static void nilfs_bmap_commit_end_vmdt(struct nilfs_bmap *bmap,
- union nilfs_bmap_ptr_req *req)
+void nilfs_bmap_commit_end_v(struct nilfs_bmap *bmap,
+ union nilfs_bmap_ptr_req *req)
{
- nilfs_dat_commit_end(nilfs_bmap_get_dat(bmap), &req->bpr_req, 1);
+ nilfs_dat_commit_end(nilfs_bmap_get_dat(bmap), &req->bpr_req,
+ bmap->b_ptr_type == NILFS_BMAP_PTR_VS);
}
-static void nilfs_bmap_abort_end_v(struct nilfs_bmap *bmap,
- union nilfs_bmap_ptr_req *req)
+void nilfs_bmap_abort_end_v(struct nilfs_bmap *bmap,
+ union nilfs_bmap_ptr_req *req)
{
nilfs_dat_abort_end(nilfs_bmap_get_dat(bmap), &req->bpr_req);
}
@@ -566,128 +529,44 @@ int nilfs_bmap_mark_dirty(const struct nilfs_bmap *bmap, __u64 vblocknr)
return nilfs_dat_mark_dirty(nilfs_bmap_get_dat(bmap), vblocknr);
}
-int nilfs_bmap_prepare_update(struct nilfs_bmap *bmap,
- union nilfs_bmap_ptr_req *oldreq,
- union nilfs_bmap_ptr_req *newreq)
+int nilfs_bmap_prepare_update_v(struct nilfs_bmap *bmap,
+ union nilfs_bmap_ptr_req *oldreq,
+ union nilfs_bmap_ptr_req *newreq)
{
+ struct inode *dat = nilfs_bmap_get_dat(bmap);
int ret;
- ret = bmap->b_pops->bpop_prepare_end_ptr(bmap, oldreq);
+ ret = nilfs_dat_prepare_end(dat, &oldreq->bpr_req);
if (ret < 0)
return ret;
- ret = bmap->b_pops->bpop_prepare_alloc_ptr(bmap, newreq);
+ ret = nilfs_dat_prepare_alloc(dat, &newreq->bpr_req);
if (ret < 0)
- bmap->b_pops->bpop_abort_end_ptr(bmap, oldreq);
+ nilfs_dat_abort_end(dat, &oldreq->bpr_req);
return ret;
}
-void nilfs_bmap_commit_update(struct nilfs_bmap *bmap,
- union nilfs_bmap_ptr_req *oldreq,
- union nilfs_bmap_ptr_req *newreq)
+void nilfs_bmap_commit_update_v(struct nilfs_bmap *bmap,
+ union nilfs_bmap_ptr_req *oldreq,
+ union nilfs_bmap_ptr_req *newreq)
{
- bmap->b_pops->bpop_commit_end_ptr(bmap, oldreq);
- bmap->b_pops->bpop_commit_alloc_ptr(bmap, newreq);
-}
+ struct inode *dat = nilfs_bmap_get_dat(bmap);
-void nilfs_bmap_abort_update(struct nilfs_bmap *bmap,
- union nilfs_bmap_ptr_req *oldreq,
- union nilfs_bmap_ptr_req *newreq)
-{
- bmap->b_pops->bpop_abort_end_ptr(bmap, oldreq);
- bmap->b_pops->bpop_abort_alloc_ptr(bmap, newreq);
+ nilfs_dat_commit_end(dat, &oldreq->bpr_req,
+ bmap->b_ptr_type == NILFS_BMAP_PTR_VS);
+ nilfs_dat_commit_alloc(dat, &newreq->bpr_req);
}
-static int nilfs_bmap_translate_v(const struct nilfs_bmap *bmap, __u64 ptr,
- __u64 *ptrp)
+void nilfs_bmap_abort_update_v(struct nilfs_bmap *bmap,
+ union nilfs_bmap_ptr_req *oldreq,
+ union nilfs_bmap_ptr_req *newreq)
{
- sector_t blocknr;
- int ret;
-
- ret = nilfs_dat_translate(nilfs_bmap_get_dat(bmap), ptr, &blocknr);
- if (ret < 0)
- return ret;
- if (ptrp != NULL)
- *ptrp = blocknr;
- return 0;
-}
+ struct inode *dat = nilfs_bmap_get_dat(bmap);
-static int nilfs_bmap_prepare_alloc_p(struct nilfs_bmap *bmap,
- union nilfs_bmap_ptr_req *req)
-{
- /* ignore target ptr */
- req->bpr_ptr = bmap->b_last_allocated_ptr++;
- return 0;
+ nilfs_dat_abort_end(dat, &oldreq->bpr_req);
+ nilfs_dat_abort_alloc(dat, &newreq->bpr_req);
}
-static void nilfs_bmap_commit_alloc_p(struct nilfs_bmap *bmap,
- union nilfs_bmap_ptr_req *req)
-{
- /* do nothing */
-}
-
-static void nilfs_bmap_abort_alloc_p(struct nilfs_bmap *bmap,
- union nilfs_bmap_ptr_req *req)
-{
- bmap->b_last_allocated_ptr--;
-}
-
-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,
-
- .bpop_translate = nilfs_bmap_translate_v,
-};
-
-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,
-
- .bpop_translate = nilfs_bmap_translate_v,
-};
-
-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,
-
- .bpop_translate = NULL,
-};
-
-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,
-
- .bpop_translate = NULL,
-};
-
static struct lock_class_key nilfs_bmap_dat_lock_key;
/**
@@ -714,31 +593,26 @@ int nilfs_bmap_read(struct nilfs_bmap *bmap, struct nilfs_inode *raw_inode)
bmap->b_inode = &NILFS_BMAP_I(bmap)->vfs_inode;
switch (bmap->b_inode->i_ino) {
case NILFS_DAT_INO:
- bmap->b_pops = &nilfs_bmap_ptr_ops_p;
- bmap->b_last_allocated_key = 0; /* XXX: use macro */
+ bmap->b_ptr_type = NILFS_BMAP_PTR_P;
+ bmap->b_last_allocated_key = 0;
bmap->b_last_allocated_ptr = NILFS_BMAP_NEW_PTR_INIT;
lockdep_set_class(&bmap->b_sem, &nilfs_bmap_dat_lock_key);
break;
case NILFS_CPFILE_INO:
case NILFS_SUFILE_INO:
- bmap->b_pops = &nilfs_bmap_ptr_ops_vmdt;
- bmap->b_last_allocated_key = 0; /* XXX: use macro */
+ bmap->b_ptr_type = NILFS_BMAP_PTR_VS;
+ bmap->b_last_allocated_key = 0;
bmap->b_last_allocated_ptr = NILFS_BMAP_INVALID_PTR;
break;
default:
- bmap->b_pops = &nilfs_bmap_ptr_ops_v;
- bmap->b_last_allocated_key = 0; /* XXX: use macro */
+ bmap->b_ptr_type = NILFS_BMAP_PTR_VM;
+ bmap->b_last_allocated_key = 0;
bmap->b_last_allocated_ptr = NILFS_BMAP_INVALID_PTR;
break;
}
return (bmap->b_u.u_flags & NILFS_BMAP_LARGE) ?
- nilfs_btree_init(bmap,
- NILFS_BMAP_LARGE_LOW,
- NILFS_BMAP_LARGE_HIGH) :
- nilfs_direct_init(bmap,
- NILFS_BMAP_SMALL_LOW,
- NILFS_BMAP_SMALL_HIGH);
+ nilfs_btree_init(bmap) : nilfs_direct_init(bmap);
}
/**
@@ -764,7 +638,7 @@ void nilfs_bmap_init_gc(struct nilfs_bmap *bmap)
memset(&bmap->b_u, 0, NILFS_BMAP_SIZE);
init_rwsem(&bmap->b_sem);
bmap->b_inode = &NILFS_BMAP_I(bmap)->vfs_inode;
- bmap->b_pops = &nilfs_bmap_ptr_ops_gc;
+ bmap->b_ptr_type = NILFS_BMAP_PTR_U;
bmap->b_last_allocated_key = 0;
bmap->b_last_allocated_ptr = NILFS_BMAP_INVALID_PTR;
bmap->b_state = 0;