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-rw-r--r--fs/nilfs2/btree.c366
1 files changed, 208 insertions, 158 deletions
diff --git a/fs/nilfs2/btree.c b/fs/nilfs2/btree.c
index 6b37a27..aa41272 100644
--- a/fs/nilfs2/btree.c
+++ b/fs/nilfs2/btree.c
@@ -29,6 +29,7 @@
#include "btnode.h"
#include "btree.h"
#include "alloc.h"
+#include "dat.h"
/**
* struct nilfs_btree_path - A path on which B-tree operations are executed
@@ -109,8 +110,7 @@ static void nilfs_btree_clear_path(const struct nilfs_btree *btree,
level < NILFS_BTREE_LEVEL_MAX;
level++) {
if (path[level].bp_bh != NULL) {
- nilfs_bmap_put_block(&btree->bt_bmap,
- path[level].bp_bh);
+ brelse(path[level].bp_bh);
path[level].bp_bh = NULL;
}
/* sib_bh is released or deleted by prepare or commit
@@ -123,10 +123,29 @@ static void nilfs_btree_clear_path(const struct nilfs_btree *btree,
}
}
-
/*
* B-tree node operations
*/
+static int nilfs_btree_get_block(const struct nilfs_btree *btree, __u64 ptr,
+ struct buffer_head **bhp)
+{
+ struct address_space *btnc =
+ &NILFS_BMAP_I((struct nilfs_bmap *)btree)->i_btnode_cache;
+ return nilfs_btnode_get(btnc, ptr, 0, bhp, 0);
+}
+
+static int nilfs_btree_get_new_block(const struct nilfs_btree *btree,
+ __u64 ptr, struct buffer_head **bhp)
+{
+ struct address_space *btnc =
+ &NILFS_BMAP_I((struct nilfs_bmap *)btree)->i_btnode_cache;
+ int ret;
+
+ ret = nilfs_btnode_get(btnc, ptr, 0, bhp, 1);
+ if (!ret)
+ set_buffer_nilfs_volatile(*bhp);
+ return ret;
+}
static inline int
nilfs_btree_node_get_flags(const struct nilfs_btree *btree,
@@ -488,8 +507,7 @@ static int nilfs_btree_do_lookup(const struct nilfs_btree *btree,
path[level].bp_index = index;
for (level--; level >= minlevel; level--) {
- ret = nilfs_bmap_get_block(&btree->bt_bmap, ptr,
- &path[level].bp_bh);
+ ret = nilfs_btree_get_block(btree, ptr, &path[level].bp_bh);
if (ret < 0)
return ret;
node = nilfs_btree_get_nonroot_node(btree, path, level);
@@ -535,8 +553,7 @@ static int nilfs_btree_do_lookup_last(const struct nilfs_btree *btree,
path[level].bp_index = index;
for (level--; level > 0; level--) {
- ret = nilfs_bmap_get_block(&btree->bt_bmap, ptr,
- &path[level].bp_bh);
+ ret = nilfs_btree_get_block(btree, ptr, &path[level].bp_bh);
if (ret < 0)
return ret;
node = nilfs_btree_get_nonroot_node(btree, path, level);
@@ -579,6 +596,87 @@ static int nilfs_btree_lookup(const struct nilfs_bmap *bmap,
return ret;
}
+static int nilfs_btree_lookup_contig(const struct nilfs_bmap *bmap,
+ __u64 key, __u64 *ptrp, unsigned maxblocks)
+{
+ struct nilfs_btree *btree = (struct nilfs_btree *)bmap;
+ struct nilfs_btree_path *path;
+ struct nilfs_btree_node *node;
+ struct inode *dat = NULL;
+ __u64 ptr, ptr2;
+ sector_t blocknr;
+ int level = NILFS_BTREE_LEVEL_NODE_MIN;
+ int ret, cnt, index, maxlevel;
+
+ path = nilfs_btree_alloc_path(btree);
+ if (path == NULL)
+ return -ENOMEM;
+ nilfs_btree_init_path(btree, path);
+ ret = nilfs_btree_do_lookup(btree, path, key, &ptr, level);
+ if (ret < 0)
+ goto out;
+
+ if (NILFS_BMAP_USE_VBN(bmap)) {
+ dat = nilfs_bmap_get_dat(bmap);
+ ret = nilfs_dat_translate(dat, ptr, &blocknr);
+ if (ret < 0)
+ goto out;
+ ptr = blocknr;
+ }
+ cnt = 1;
+ if (cnt == maxblocks)
+ goto end;
+
+ maxlevel = nilfs_btree_height(btree) - 1;
+ node = nilfs_btree_get_node(btree, path, level);
+ index = path[level].bp_index + 1;
+ for (;;) {
+ while (index < nilfs_btree_node_get_nchildren(btree, node)) {
+ if (nilfs_btree_node_get_key(btree, node, index) !=
+ key + cnt)
+ goto end;
+ ptr2 = nilfs_btree_node_get_ptr(btree, node, index);
+ if (dat) {
+ ret = nilfs_dat_translate(dat, ptr2, &blocknr);
+ if (ret < 0)
+ goto out;
+ ptr2 = blocknr;
+ }
+ if (ptr2 != ptr + cnt || ++cnt == maxblocks)
+ goto end;
+ index++;
+ continue;
+ }
+ if (level == maxlevel)
+ break;
+
+ /* look-up right sibling node */
+ node = nilfs_btree_get_node(btree, path, level + 1);
+ index = path[level + 1].bp_index + 1;
+ if (index >= nilfs_btree_node_get_nchildren(btree, node) ||
+ nilfs_btree_node_get_key(btree, node, index) != key + cnt)
+ break;
+ ptr2 = nilfs_btree_node_get_ptr(btree, node, index);
+ path[level + 1].bp_index = index;
+
+ brelse(path[level].bp_bh);
+ path[level].bp_bh = NULL;
+ ret = nilfs_btree_get_block(btree, ptr2, &path[level].bp_bh);
+ if (ret < 0)
+ goto out;
+ node = nilfs_btree_get_nonroot_node(btree, path, level);
+ index = 0;
+ path[level].bp_index = index;
+ }
+ end:
+ *ptrp = ptr;
+ ret = cnt;
+ out:
+ nilfs_btree_clear_path(btree, path);
+ nilfs_btree_free_path(btree, path);
+ return ret;
+}
+
static void nilfs_btree_promote_key(struct nilfs_btree *btree,
struct nilfs_btree_path *path,
int level, __u64 key)
@@ -669,13 +767,13 @@ static void nilfs_btree_carry_left(struct nilfs_btree *btree,
nilfs_btree_node_get_key(btree, node, 0));
if (move) {
- nilfs_bmap_put_block(&btree->bt_bmap, path[level].bp_bh);
+ brelse(path[level].bp_bh);
path[level].bp_bh = path[level].bp_sib_bh;
path[level].bp_sib_bh = NULL;
path[level].bp_index += lnchildren;
path[level + 1].bp_index--;
} else {
- nilfs_bmap_put_block(&btree->bt_bmap, path[level].bp_sib_bh);
+ brelse(path[level].bp_sib_bh);
path[level].bp_sib_bh = NULL;
path[level].bp_index -= n;
}
@@ -722,14 +820,14 @@ static void nilfs_btree_carry_right(struct nilfs_btree *btree,
path[level + 1].bp_index--;
if (move) {
- nilfs_bmap_put_block(&btree->bt_bmap, path[level].bp_bh);
+ brelse(path[level].bp_bh);
path[level].bp_bh = path[level].bp_sib_bh;
path[level].bp_sib_bh = NULL;
path[level].bp_index -=
nilfs_btree_node_get_nchildren(btree, node);
path[level + 1].bp_index++;
} else {
- nilfs_bmap_put_block(&btree->bt_bmap, path[level].bp_sib_bh);
+ brelse(path[level].bp_sib_bh);
path[level].bp_sib_bh = NULL;
}
@@ -781,7 +879,7 @@ static void nilfs_btree_split(struct nilfs_btree *btree,
*keyp = nilfs_btree_node_get_key(btree, right, 0);
*ptrp = path[level].bp_newreq.bpr_ptr;
- nilfs_bmap_put_block(&btree->bt_bmap, path[level].bp_bh);
+ brelse(path[level].bp_bh);
path[level].bp_bh = path[level].bp_sib_bh;
path[level].bp_sib_bh = NULL;
} else {
@@ -790,7 +888,7 @@ static void nilfs_btree_split(struct nilfs_btree *btree,
*keyp = nilfs_btree_node_get_key(btree, right, 0);
*ptrp = path[level].bp_newreq.bpr_ptr;
- nilfs_bmap_put_block(&btree->bt_bmap, path[level].bp_sib_bh);
+ brelse(path[level].bp_sib_bh);
path[level].bp_sib_bh = NULL;
}
@@ -897,12 +995,12 @@ static int nilfs_btree_prepare_insert(struct nilfs_btree *btree,
level = NILFS_BTREE_LEVEL_DATA;
/* allocate a new ptr for data block */
- if (btree->bt_ops->btop_find_target != NULL)
+ if (NILFS_BMAP_USE_VBN(&btree->bt_bmap))
path[level].bp_newreq.bpr_ptr =
- btree->bt_ops->btop_find_target(btree, path, key);
+ nilfs_btree_find_target_v(btree, path, key);
- ret = btree->bt_bmap.b_pops->bpop_prepare_alloc_ptr(
- &btree->bt_bmap, &path[level].bp_newreq);
+ ret = nilfs_bmap_prepare_alloc_ptr(&btree->bt_bmap,
+ &path[level].bp_newreq);
if (ret < 0)
goto err_out_data;
@@ -924,8 +1022,7 @@ static int nilfs_btree_prepare_insert(struct nilfs_btree *btree,
if (pindex > 0) {
sibptr = nilfs_btree_node_get_ptr(btree, parent,
pindex - 1);
- ret = nilfs_bmap_get_block(&btree->bt_bmap, sibptr,
- &bh);
+ ret = nilfs_btree_get_block(btree, sibptr, &bh);
if (ret < 0)
goto err_out_child_node;
sib = (struct nilfs_btree_node *)bh->b_data;
@@ -936,7 +1033,7 @@ static int nilfs_btree_prepare_insert(struct nilfs_btree *btree,
stats->bs_nblocks++;
goto out;
} else
- nilfs_bmap_put_block(&btree->bt_bmap, bh);
+ brelse(bh);
}
/* right sibling */
@@ -944,8 +1041,7 @@ static int nilfs_btree_prepare_insert(struct nilfs_btree *btree,
nilfs_btree_node_get_nchildren(btree, parent) - 1) {
sibptr = nilfs_btree_node_get_ptr(btree, parent,
pindex + 1);
- ret = nilfs_bmap_get_block(&btree->bt_bmap, sibptr,
- &bh);
+ ret = nilfs_btree_get_block(btree, sibptr, &bh);
if (ret < 0)
goto err_out_child_node;
sib = (struct nilfs_btree_node *)bh->b_data;
@@ -956,19 +1052,19 @@ static int nilfs_btree_prepare_insert(struct nilfs_btree *btree,
stats->bs_nblocks++;
goto out;
} else
- nilfs_bmap_put_block(&btree->bt_bmap, bh);
+ brelse(bh);
}
/* split */
path[level].bp_newreq.bpr_ptr =
path[level - 1].bp_newreq.bpr_ptr + 1;
- ret = btree->bt_bmap.b_pops->bpop_prepare_alloc_ptr(
- &btree->bt_bmap, &path[level].bp_newreq);
+ ret = nilfs_bmap_prepare_alloc_ptr(&btree->bt_bmap,
+ &path[level].bp_newreq);
if (ret < 0)
goto err_out_child_node;
- ret = nilfs_bmap_get_new_block(&btree->bt_bmap,
- path[level].bp_newreq.bpr_ptr,
- &bh);
+ ret = nilfs_btree_get_new_block(btree,
+ path[level].bp_newreq.bpr_ptr,
+ &bh);
if (ret < 0)
goto err_out_curr_node;
@@ -994,12 +1090,12 @@ static int nilfs_btree_prepare_insert(struct nilfs_btree *btree,
/* grow */
path[level].bp_newreq.bpr_ptr = path[level - 1].bp_newreq.bpr_ptr + 1;
- ret = btree->bt_bmap.b_pops->bpop_prepare_alloc_ptr(
- &btree->bt_bmap, &path[level].bp_newreq);
+ ret = nilfs_bmap_prepare_alloc_ptr(&btree->bt_bmap,
+ &path[level].bp_newreq);
if (ret < 0)
goto err_out_child_node;
- ret = nilfs_bmap_get_new_block(&btree->bt_bmap,
- path[level].bp_newreq.bpr_ptr, &bh);
+ ret = nilfs_btree_get_new_block(btree, path[level].bp_newreq.bpr_ptr,
+ &bh);
if (ret < 0)
goto err_out_curr_node;
@@ -1023,18 +1119,16 @@ static int nilfs_btree_prepare_insert(struct nilfs_btree *btree,
/* error */
err_out_curr_node:
- btree->bt_bmap.b_pops->bpop_abort_alloc_ptr(&btree->bt_bmap,
- &path[level].bp_newreq);
+ nilfs_bmap_abort_alloc_ptr(&btree->bt_bmap, &path[level].bp_newreq);
err_out_child_node:
for (level--; level > NILFS_BTREE_LEVEL_DATA; level--) {
- nilfs_bmap_delete_block(&btree->bt_bmap, path[level].bp_sib_bh);
- btree->bt_bmap.b_pops->bpop_abort_alloc_ptr(
- &btree->bt_bmap, &path[level].bp_newreq);
+ nilfs_btnode_delete(path[level].bp_sib_bh);
+ nilfs_bmap_abort_alloc_ptr(&btree->bt_bmap,
+ &path[level].bp_newreq);
}
- btree->bt_bmap.b_pops->bpop_abort_alloc_ptr(&btree->bt_bmap,
- &path[level].bp_newreq);
+ nilfs_bmap_abort_alloc_ptr(&btree->bt_bmap, &path[level].bp_newreq);
err_out_data:
*levelp = level;
stats->bs_nblocks = 0;
@@ -1049,14 +1143,12 @@ static void nilfs_btree_commit_insert(struct nilfs_btree *btree,
set_buffer_nilfs_volatile((struct buffer_head *)((unsigned long)ptr));
ptr = path[NILFS_BTREE_LEVEL_DATA].bp_newreq.bpr_ptr;
- if (btree->bt_ops->btop_set_target != NULL)
- btree->bt_ops->btop_set_target(btree, key, ptr);
+ if (NILFS_BMAP_USE_VBN(&btree->bt_bmap))
+ nilfs_btree_set_target_v(btree, key, ptr);
for (level = NILFS_BTREE_LEVEL_NODE_MIN; level <= maxlevel; level++) {
- if (btree->bt_bmap.b_pops->bpop_commit_alloc_ptr != NULL) {
- btree->bt_bmap.b_pops->bpop_commit_alloc_ptr(
- &btree->bt_bmap, &path[level - 1].bp_newreq);
- }
+ nilfs_bmap_commit_alloc_ptr(&btree->bt_bmap,
+ &path[level - 1].bp_newreq);
path[level].bp_op(btree, path, level, &key, &ptr);
}
@@ -1153,7 +1245,7 @@ static void nilfs_btree_borrow_left(struct nilfs_btree *btree,
nilfs_btree_promote_key(btree, path, level + 1,
nilfs_btree_node_get_key(btree, node, 0));
- nilfs_bmap_put_block(&btree->bt_bmap, path[level].bp_sib_bh);
+ brelse(path[level].bp_sib_bh);
path[level].bp_sib_bh = NULL;
path[level].bp_index += n;
}
@@ -1192,7 +1284,7 @@ static void nilfs_btree_borrow_right(struct nilfs_btree *btree,
nilfs_btree_node_get_key(btree, right, 0));
path[level + 1].bp_index--;
- nilfs_bmap_put_block(&btree->bt_bmap, path[level].bp_sib_bh);
+ brelse(path[level].bp_sib_bh);
path[level].bp_sib_bh = NULL;
}
@@ -1221,7 +1313,7 @@ static void nilfs_btree_concat_left(struct nilfs_btree *btree,
unlock_buffer(path[level].bp_bh);
unlock_buffer(path[level].bp_sib_bh);
- nilfs_bmap_delete_block(&btree->bt_bmap, path[level].bp_bh);
+ nilfs_btnode_delete(path[level].bp_bh);
path[level].bp_bh = path[level].bp_sib_bh;
path[level].bp_sib_bh = NULL;
path[level].bp_index += nilfs_btree_node_get_nchildren(btree, left);
@@ -1252,7 +1344,7 @@ static void nilfs_btree_concat_right(struct nilfs_btree *btree,
unlock_buffer(path[level].bp_bh);
unlock_buffer(path[level].bp_sib_bh);
- nilfs_bmap_delete_block(&btree->bt_bmap, path[level].bp_sib_bh);
+ nilfs_btnode_delete(path[level].bp_sib_bh);
path[level].bp_sib_bh = NULL;
path[level + 1].bp_index++;
}
@@ -1276,7 +1368,7 @@ static void nilfs_btree_shrink(struct nilfs_btree *btree,
nilfs_btree_node_move_left(btree, root, child, n);
unlock_buffer(path[level].bp_bh);
- nilfs_bmap_delete_block(&btree->bt_bmap, path[level].bp_bh);
+ nilfs_btnode_delete(path[level].bp_bh);
path[level].bp_bh = NULL;
}
@@ -1300,12 +1392,10 @@ static int nilfs_btree_prepare_delete(struct nilfs_btree *btree,
path[level].bp_oldreq.bpr_ptr =
nilfs_btree_node_get_ptr(btree, node,
path[level].bp_index);
- if (btree->bt_bmap.b_pops->bpop_prepare_end_ptr != NULL) {
- ret = btree->bt_bmap.b_pops->bpop_prepare_end_ptr(
- &btree->bt_bmap, &path[level].bp_oldreq);
- if (ret < 0)
- goto err_out_child_node;
- }
+ ret = nilfs_bmap_prepare_end_ptr(&btree->bt_bmap,
+ &path[level].bp_oldreq);
+ if (ret < 0)
+ goto err_out_child_node;
if (nilfs_btree_node_get_nchildren(btree, node) >
nilfs_btree_node_nchildren_min(btree, node)) {
@@ -1321,8 +1411,7 @@ static int nilfs_btree_prepare_delete(struct nilfs_btree *btree,
/* left sibling */
sibptr = nilfs_btree_node_get_ptr(btree, parent,
pindex - 1);
- ret = nilfs_bmap_get_block(&btree->bt_bmap, sibptr,
- &bh);
+ ret = nilfs_btree_get_block(btree, sibptr, &bh);
if (ret < 0)
goto err_out_curr_node;
sib = (struct nilfs_btree_node *)bh->b_data;
@@ -1343,8 +1432,7 @@ static int nilfs_btree_prepare_delete(struct nilfs_btree *btree,
/* right sibling */
sibptr = nilfs_btree_node_get_ptr(btree, parent,
pindex + 1);
- ret = nilfs_bmap_get_block(&btree->bt_bmap, sibptr,
- &bh);
+ ret = nilfs_btree_get_block(btree, sibptr, &bh);
if (ret < 0)
goto err_out_curr_node;
sib = (struct nilfs_btree_node *)bh->b_data;
@@ -1381,12 +1469,12 @@ static int nilfs_btree_prepare_delete(struct nilfs_btree *btree,
node = nilfs_btree_get_root(btree);
path[level].bp_oldreq.bpr_ptr =
nilfs_btree_node_get_ptr(btree, node, path[level].bp_index);
- if (btree->bt_bmap.b_pops->bpop_prepare_end_ptr != NULL) {
- ret = btree->bt_bmap.b_pops->bpop_prepare_end_ptr(
- &btree->bt_bmap, &path[level].bp_oldreq);
- if (ret < 0)
- goto err_out_child_node;
- }
+
+ ret = nilfs_bmap_prepare_end_ptr(&btree->bt_bmap,
+ &path[level].bp_oldreq);
+ if (ret < 0)
+ goto err_out_child_node;
+
/* child of the root node is deleted */
path[level].bp_op = nilfs_btree_do_delete;
stats->bs_nblocks++;
@@ -1398,15 +1486,12 @@ static int nilfs_btree_prepare_delete(struct nilfs_btree *btree,
/* error */
err_out_curr_node:
- if (btree->bt_bmap.b_pops->bpop_abort_end_ptr != NULL)
- btree->bt_bmap.b_pops->bpop_abort_end_ptr(
- &btree->bt_bmap, &path[level].bp_oldreq);
+ nilfs_bmap_abort_end_ptr(&btree->bt_bmap, &path[level].bp_oldreq);
err_out_child_node:
for (level--; level >= NILFS_BTREE_LEVEL_NODE_MIN; level--) {
- nilfs_bmap_put_block(&btree->bt_bmap, path[level].bp_sib_bh);
- if (btree->bt_bmap.b_pops->bpop_abort_end_ptr != NULL)
- btree->bt_bmap.b_pops->bpop_abort_end_ptr(
- &btree->bt_bmap, &path[level].bp_oldreq);
+ brelse(path[level].bp_sib_bh);
+ nilfs_bmap_abort_end_ptr(&btree->bt_bmap,
+ &path[level].bp_oldreq);
}
*levelp = level;
stats->bs_nblocks = 0;
@@ -1420,9 +1505,8 @@ static void nilfs_btree_commit_delete(struct nilfs_btree *btree,
int level;
for (level = NILFS_BTREE_LEVEL_NODE_MIN; level <= maxlevel; level++) {
- if (btree->bt_bmap.b_pops->bpop_commit_end_ptr != NULL)
- btree->bt_bmap.b_pops->bpop_commit_end_ptr(
- &btree->bt_bmap, &path[level].bp_oldreq);
+ nilfs_bmap_commit_end_ptr(&btree->bt_bmap,
+ &path[level].bp_oldreq);
path[level].bp_op(btree, path, level, NULL, NULL);
}
@@ -1501,7 +1585,7 @@ static int nilfs_btree_check_delete(struct nilfs_bmap *bmap, __u64 key)
if (nchildren > 1)
return 0;
ptr = nilfs_btree_node_get_ptr(btree, root, nchildren - 1);
- ret = nilfs_bmap_get_block(bmap, ptr, &bh);
+ ret = nilfs_btree_get_block(btree, ptr, &bh);
if (ret < 0)
return ret;
node = (struct nilfs_btree_node *)bh->b_data;
@@ -1515,9 +1599,9 @@ static int nilfs_btree_check_delete(struct nilfs_bmap *bmap, __u64 key)
nextmaxkey = (nchildren > 1) ?
nilfs_btree_node_get_key(btree, node, nchildren - 2) : 0;
if (bh != NULL)
- nilfs_bmap_put_block(bmap, bh);
+ brelse(bh);
- return (maxkey == key) && (nextmaxkey < bmap->b_low);
+ return (maxkey == key) && (nextmaxkey < NILFS_BMAP_LARGE_LOW);
}
static int nilfs_btree_gather_data(struct nilfs_bmap *bmap,
@@ -1542,7 +1626,7 @@ static int nilfs_btree_gather_data(struct nilfs_bmap *bmap,
nchildren = nilfs_btree_node_get_nchildren(btree, root);
WARN_ON(nchildren > 1);
ptr = nilfs_btree_node_get_ptr(btree, root, nchildren - 1);
- ret = nilfs_bmap_get_block(bmap, ptr, &bh);
+ ret = nilfs_btree_get_block(btree, ptr, &bh);
if (ret < 0)
return ret;
node = (struct nilfs_btree_node *)bh->b_data;
@@ -1563,7 +1647,7 @@ static int nilfs_btree_gather_data(struct nilfs_bmap *bmap,
}
if (bh != NULL)
- nilfs_bmap_put_block(bmap, bh);
+ brelse(bh);
return nitems;
}
@@ -1584,10 +1668,10 @@ nilfs_btree_prepare_convert_and_insert(struct nilfs_bmap *bmap, __u64 key,
/* for data */
/* cannot find near ptr */
- if (btree->bt_ops->btop_find_target != NULL)
- dreq->bpr_ptr
- = btree->bt_ops->btop_find_target(btree, NULL, key);
- ret = bmap->b_pops->bpop_prepare_alloc_ptr(bmap, dreq);
+ if (NILFS_BMAP_USE_VBN(bmap))
+ dreq->bpr_ptr = nilfs_btree_find_target_v(btree, NULL, key);
+
+ ret = nilfs_bmap_prepare_alloc_ptr(bmap, dreq);
if (ret < 0)
return ret;
@@ -1595,11 +1679,11 @@ nilfs_btree_prepare_convert_and_insert(struct nilfs_bmap *bmap, __u64 key,
stats->bs_nblocks++;
if (nreq != NULL) {
nreq->bpr_ptr = dreq->bpr_ptr + 1;
- ret = bmap->b_pops->bpop_prepare_alloc_ptr(bmap, nreq);
+ ret = nilfs_bmap_prepare_alloc_ptr(bmap, nreq);
if (ret < 0)
goto err_out_dreq;
- ret = nilfs_bmap_get_new_block(bmap, nreq->bpr_ptr, &bh);
+ ret = nilfs_btree_get_new_block(btree, nreq->bpr_ptr, &bh);
if (ret < 0)
goto err_out_nreq;
@@ -1612,9 +1696,9 @@ nilfs_btree_prepare_convert_and_insert(struct nilfs_bmap *bmap, __u64 key,
/* error */
err_out_nreq:
- bmap->b_pops->bpop_abort_alloc_ptr(bmap, nreq);
+ nilfs_bmap_abort_alloc_ptr(bmap, nreq);
err_out_dreq:
- bmap->b_pops->bpop_abort_alloc_ptr(bmap, dreq);
+ nilfs_bmap_abort_alloc_ptr(bmap, dreq);
stats->bs_nblocks = 0;
return ret;
@@ -1624,7 +1708,7 @@ static void
nilfs_btree_commit_convert_and_insert(struct nilfs_bmap *bmap,
__u64 key, __u64 ptr,
const __u64 *keys, const __u64 *ptrs,
- int n, __u64 low, __u64 high,
+ int n,
union nilfs_bmap_ptr_req *dreq,
union nilfs_bmap_ptr_req *nreq,
struct buffer_head *bh)
@@ -1642,12 +1726,10 @@ nilfs_btree_commit_convert_and_insert(struct nilfs_bmap *bmap,
/* convert and insert */
btree = (struct nilfs_btree *)bmap;
- nilfs_btree_init(bmap, low, high);
+ nilfs_btree_init(bmap);
if (nreq != NULL) {
- if (bmap->b_pops->bpop_commit_alloc_ptr != NULL) {
- bmap->b_pops->bpop_commit_alloc_ptr(bmap, dreq);
- bmap->b_pops->bpop_commit_alloc_ptr(bmap, nreq);
- }
+ nilfs_bmap_commit_alloc_ptr(bmap, dreq);
+ nilfs_bmap_commit_alloc_ptr(bmap, nreq);
/* create child node at level 1 */
lock_buffer(bh);
@@ -1661,7 +1743,7 @@ nilfs_btree_commit_convert_and_insert(struct nilfs_bmap *bmap,
nilfs_bmap_set_dirty(bmap);
unlock_buffer(bh);
- nilfs_bmap_put_block(bmap, bh);
+ brelse(bh);
/* create root node at level 2 */
node = nilfs_btree_get_root(btree);
@@ -1669,8 +1751,7 @@ nilfs_btree_commit_convert_and_insert(struct nilfs_bmap *bmap,
nilfs_btree_node_init(btree, node, NILFS_BTREE_NODE_ROOT,
2, 1, &keys[0], &tmpptr);
} else {
- if (bmap->b_pops->bpop_commit_alloc_ptr != NULL)
- bmap->b_pops->bpop_commit_alloc_ptr(bmap, dreq);
+ nilfs_bmap_commit_alloc_ptr(bmap, dreq);
/* create root node at level 1 */
node = nilfs_btree_get_root(btree);
@@ -1682,8 +1763,8 @@ nilfs_btree_commit_convert_and_insert(struct nilfs_bmap *bmap,
nilfs_bmap_set_dirty(bmap);
}
- if (btree->bt_ops->btop_set_target != NULL)
- btree->bt_ops->btop_set_target(btree, key, dreq->bpr_ptr);
+ if (NILFS_BMAP_USE_VBN(bmap))
+ nilfs_btree_set_target_v(btree, key, dreq->bpr_ptr);
}
/**
@@ -1694,13 +1775,10 @@ nilfs_btree_commit_convert_and_insert(struct nilfs_bmap *bmap,
* @keys:
* @ptrs:
* @n:
- * @low:
- * @high:
*/
int nilfs_btree_convert_and_insert(struct nilfs_bmap *bmap,
__u64 key, __u64 ptr,
- const __u64 *keys, const __u64 *ptrs,
- int n, __u64 low, __u64 high)
+ const __u64 *keys, const __u64 *ptrs, int n)
{
struct buffer_head *bh;
union nilfs_bmap_ptr_req dreq, nreq, *di, *ni;
@@ -1725,7 +1803,7 @@ int nilfs_btree_convert_and_insert(struct nilfs_bmap *bmap,
if (ret < 0)
return ret;
nilfs_btree_commit_convert_and_insert(bmap, key, ptr, keys, ptrs, n,
- low, high, di, ni, bh);
+ di, ni, bh);
nilfs_bmap_add_blocks(bmap, stats.bs_nblocks);
return 0;
}
@@ -1754,9 +1832,9 @@ static int nilfs_btree_prepare_update_v(struct nilfs_btree *btree,
nilfs_btree_node_get_ptr(btree, parent,
path[level + 1].bp_index);
path[level].bp_newreq.bpr_ptr = path[level].bp_oldreq.bpr_ptr + 1;
- ret = nilfs_bmap_prepare_update(&btree->bt_bmap,
- &path[level].bp_oldreq,
- &path[level].bp_newreq);
+ ret = nilfs_bmap_prepare_update_v(&btree->bt_bmap,
+ &path[level].bp_oldreq,
+ &path[level].bp_newreq);
if (ret < 0)
return ret;
@@ -1768,9 +1846,9 @@ static int nilfs_btree_prepare_update_v(struct nilfs_btree *btree,
&NILFS_BMAP_I(&btree->bt_bmap)->i_btnode_cache,
&path[level].bp_ctxt);
if (ret < 0) {
- nilfs_bmap_abort_update(&btree->bt_bmap,
- &path[level].bp_oldreq,
- &path[level].bp_newreq);
+ nilfs_bmap_abort_update_v(&btree->bt_bmap,
+ &path[level].bp_oldreq,
+ &path[level].bp_newreq);
return ret;
}
}
@@ -1784,9 +1862,9 @@ static void nilfs_btree_commit_update_v(struct nilfs_btree *btree,
{
struct nilfs_btree_node *parent;
- nilfs_bmap_commit_update(&btree->bt_bmap,
- &path[level].bp_oldreq,
- &path[level].bp_newreq);
+ nilfs_bmap_commit_update_v(&btree->bt_bmap,
+ &path[level].bp_oldreq,
+ &path[level].bp_newreq);
if (buffer_nilfs_node(path[level].bp_bh)) {
nilfs_btnode_commit_change_key(
@@ -1805,9 +1883,9 @@ static void nilfs_btree_abort_update_v(struct nilfs_btree *btree,
struct nilfs_btree_path *path,
int level)
{
- nilfs_bmap_abort_update(&btree->bt_bmap,
- &path[level].bp_oldreq,
- &path[level].bp_newreq);
+ nilfs_bmap_abort_update_v(&btree->bt_bmap,
+ &path[level].bp_oldreq,
+ &path[level].bp_newreq);
if (buffer_nilfs_node(path[level].bp_bh))
nilfs_btnode_abort_change_key(
&NILFS_BMAP_I(&btree->bt_bmap)->i_btnode_cache,
@@ -1930,7 +2008,9 @@ static int nilfs_btree_propagate(const struct nilfs_bmap *bmap,
goto out;
}
- ret = btree->bt_ops->btop_propagate(btree, path, level, bh);
+ ret = NILFS_BMAP_USE_VBN(bmap) ?
+ nilfs_btree_propagate_v(btree, path, level, bh) :
+ nilfs_btree_propagate_p(btree, path, level, bh);
out:
nilfs_btree_clear_path(btree, path);
@@ -2066,12 +2146,9 @@ 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);
@@ -2114,8 +2191,9 @@ static int nilfs_btree_assign(struct nilfs_bmap *bmap,
goto out;
}
- ret = btree->bt_ops->btop_assign(btree, path, level, bh,
- blocknr, binfo);
+ ret = NILFS_BMAP_USE_VBN(bmap) ?
+ nilfs_btree_assign_v(btree, path, level, bh, blocknr, binfo) :
+ nilfs_btree_assign_p(btree, path, level, bh, blocknr, binfo);
out:
nilfs_btree_clear_path(btree, path);
@@ -2171,7 +2249,7 @@ static int nilfs_btree_mark(struct nilfs_bmap *bmap, __u64 key, int level)
WARN_ON(ret == -ENOENT);
goto out;
}
- ret = nilfs_bmap_get_block(&btree->bt_bmap, ptr, &bh);
+ ret = nilfs_btree_get_block(btree, ptr, &bh);
if (ret < 0) {
WARN_ON(ret == -ENOENT);
goto out;
@@ -2179,7 +2257,7 @@ static int nilfs_btree_mark(struct nilfs_bmap *bmap, __u64 key, int level)
if (!buffer_dirty(bh))
nilfs_btnode_mark_dirty(bh);
- nilfs_bmap_put_block(&btree->bt_bmap, bh);
+ brelse(bh);
if (!nilfs_bmap_dirty(&btree->bt_bmap))
nilfs_bmap_set_dirty(&btree->bt_bmap);
@@ -2191,6 +2269,7 @@ static int nilfs_btree_mark(struct nilfs_bmap *bmap, __u64 key, int level)
static const struct nilfs_bmap_operations nilfs_btree_ops = {
.bop_lookup = nilfs_btree_lookup,
+ .bop_lookup_contig = nilfs_btree_lookup_contig,
.bop_insert = nilfs_btree_insert,
.bop_delete = nilfs_btree_delete,
.bop_clear = NULL,
@@ -2210,6 +2289,7 @@ static const struct nilfs_bmap_operations nilfs_btree_ops = {
static const struct nilfs_bmap_operations nilfs_btree_ops_gc = {
.bop_lookup = NULL,
+ .bop_lookup_contig = NULL,
.bop_insert = NULL,
.bop_delete = NULL,
.bop_clear = NULL,
@@ -2227,43 +2307,13 @@ static const struct nilfs_bmap_operations nilfs_btree_ops_gc = {
.bop_gather_data = NULL,
};
-static const struct nilfs_btree_operations nilfs_btree_ops_v = {
- .btop_find_target = nilfs_btree_find_target_v,
- .btop_set_target = nilfs_btree_set_target_v,
- .btop_propagate = nilfs_btree_propagate_v,
- .btop_assign = nilfs_btree_assign_v,
-};
-
-static const struct nilfs_btree_operations nilfs_btree_ops_p = {
- .btop_find_target = NULL,
- .btop_set_target = NULL,
- .btop_propagate = nilfs_btree_propagate_p,
- .btop_assign = nilfs_btree_assign_p,
-};
-
-int nilfs_btree_init(struct nilfs_bmap *bmap, __u64 low, __u64 high)
+int nilfs_btree_init(struct nilfs_bmap *bmap)
{
- struct nilfs_btree *btree;
-
- btree = (struct nilfs_btree *)bmap;
bmap->b_ops = &nilfs_btree_ops;
- bmap->b_low = low;
- bmap->b_high = high;
- switch (bmap->b_inode->i_ino) {
- case NILFS_DAT_INO:
- btree->bt_ops = &nilfs_btree_ops_p;
- break;
- default:
- btree->bt_ops = &nilfs_btree_ops_v;
- break;
- }
-
return 0;
}
void nilfs_btree_init_gc(struct nilfs_bmap *bmap)
{
- bmap->b_low = NILFS_BMAP_LARGE_LOW;
- bmap->b_high = NILFS_BMAP_LARGE_HIGH;
bmap->b_ops = &nilfs_btree_ops_gc;
}
generated by cgit v1.1 at 2024-12-24 00:45:28 +0000