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path: root/fs/btrfs/file-item.c
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Diffstat (limited to 'fs/btrfs/file-item.c')
-rw-r--r--fs/btrfs/file-item.c114
1 files changed, 60 insertions, 54 deletions
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index 5349e8e9bbaa..672a36554363 100644
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -90,13 +90,14 @@ btrfs_lookup_csum(struct btrfs_trans_handle *trans,
struct btrfs_path *path,
u64 bytenr, int cow)
{
+ struct btrfs_fs_info *fs_info = root->fs_info;
int ret;
struct btrfs_key file_key;
struct btrfs_key found_key;
struct btrfs_csum_item *item;
struct extent_buffer *leaf;
u64 csum_offset = 0;
- u16 csum_size = btrfs_super_csum_size(root->fs_info->super_copy);
+ u16 csum_size = btrfs_super_csum_size(fs_info->super_copy);
int csums_in_item;
file_key.objectid = BTRFS_EXTENT_CSUM_OBJECTID;
@@ -116,7 +117,7 @@ btrfs_lookup_csum(struct btrfs_trans_handle *trans,
goto fail;
csum_offset = (bytenr - found_key.offset) >>
- root->fs_info->sb->s_blocksize_bits;
+ fs_info->sb->s_blocksize_bits;
csums_in_item = btrfs_item_size_nr(leaf, path->slots[0]);
csums_in_item /= csum_size;
@@ -163,6 +164,7 @@ static int __btrfs_lookup_bio_sums(struct btrfs_root *root,
struct inode *inode, struct bio *bio,
u64 logical_offset, u32 *dst, int dio)
{
+ struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
struct bio_vec *bvec;
struct btrfs_io_bio *btrfs_bio = btrfs_io_bio(bio);
struct btrfs_csum_item *item = NULL;
@@ -177,7 +179,7 @@ static int __btrfs_lookup_bio_sums(struct btrfs_root *root,
u32 diff;
int nblocks;
int count = 0, i;
- u16 csum_size = btrfs_super_csum_size(root->fs_info->super_copy);
+ u16 csum_size = btrfs_super_csum_size(fs_info->super_copy);
path = btrfs_alloc_path();
if (!path)
@@ -241,7 +243,7 @@ static int __btrfs_lookup_bio_sums(struct btrfs_root *root,
if (item)
btrfs_release_path(path);
- item = btrfs_lookup_csum(NULL, root->fs_info->csum_root,
+ item = btrfs_lookup_csum(NULL, fs_info->csum_root,
path, disk_bytenr, 0);
if (IS_ERR(item)) {
count = 1;
@@ -249,10 +251,10 @@ static int __btrfs_lookup_bio_sums(struct btrfs_root *root,
if (BTRFS_I(inode)->root->root_key.objectid ==
BTRFS_DATA_RELOC_TREE_OBJECTID) {
set_extent_bits(io_tree, offset,
- offset + root->fs_info->sectorsize - 1,
+ offset + fs_info->sectorsize - 1,
EXTENT_NODATASUM);
} else {
- btrfs_info_rl(BTRFS_I(inode)->root->fs_info,
+ btrfs_info_rl(fs_info,
"no csum found for inode %llu start %llu",
btrfs_ino(inode), offset);
}
@@ -268,7 +270,7 @@ static int __btrfs_lookup_bio_sums(struct btrfs_root *root,
path->slots[0]);
item_last_offset = item_start_offset +
(item_size / csum_size) *
- root->fs_info->sectorsize;
+ fs_info->sectorsize;
item = btrfs_item_ptr(path->nodes[0], path->slots[0],
struct btrfs_csum_item);
}
@@ -277,7 +279,7 @@ static int __btrfs_lookup_bio_sums(struct btrfs_root *root,
* a single leaf so it will also fit inside a u32
*/
diff = disk_bytenr - item_start_offset;
- diff = diff / root->fs_info->sectorsize;
+ diff = diff / fs_info->sectorsize;
diff = diff * csum_size;
count = min_t(int, nblocks, (item_last_offset - disk_bytenr) >>
inode->i_sb->s_blocksize_bits);
@@ -289,9 +291,9 @@ found:
nblocks -= count;
next:
while (count--) {
- disk_bytenr += root->fs_info->sectorsize;
- offset += root->fs_info->sectorsize;
- page_bytes_left -= root->fs_info->sectorsize;
+ disk_bytenr += fs_info->sectorsize;
+ offset += fs_info->sectorsize;
+ page_bytes_left -= fs_info->sectorsize;
if (!page_bytes_left)
break; /* move to next bio */
}
@@ -317,6 +319,7 @@ int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode,
int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end,
struct list_head *list, int search_commit)
{
+ struct btrfs_fs_info *fs_info = root->fs_info;
struct btrfs_key key;
struct btrfs_path *path;
struct extent_buffer *leaf;
@@ -327,10 +330,10 @@ int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end,
int ret;
size_t size;
u64 csum_end;
- u16 csum_size = btrfs_super_csum_size(root->fs_info->super_copy);
+ u16 csum_size = btrfs_super_csum_size(fs_info->super_copy);
- ASSERT(IS_ALIGNED(start, root->fs_info->sectorsize) &&
- IS_ALIGNED(end + 1, root->fs_info->sectorsize));
+ ASSERT(IS_ALIGNED(start, fs_info->sectorsize) &&
+ IS_ALIGNED(end + 1, fs_info->sectorsize));
path = btrfs_alloc_path();
if (!path)
@@ -355,7 +358,7 @@ int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end,
if (key.objectid == BTRFS_EXTENT_CSUM_OBJECTID &&
key.type == BTRFS_EXTENT_CSUM_KEY) {
offset = (start - key.offset) >>
- root->fs_info->sb->s_blocksize_bits;
+ fs_info->sb->s_blocksize_bits;
if (offset * csum_size <
btrfs_item_size_nr(leaf, path->slots[0] - 1))
path->slots[0]--;
@@ -383,7 +386,7 @@ int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end,
start = key.offset;
size = btrfs_item_size_nr(leaf, path->slots[0]);
- csum_end = key.offset + (size / csum_size) * root->fs_info->sectorsize;
+ csum_end = key.offset + (size / csum_size) * fs_info->sectorsize;
if (csum_end <= start) {
path->slots[0]++;
continue;
@@ -394,9 +397,8 @@ int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end,
struct btrfs_csum_item);
while (start < csum_end) {
size = min_t(size_t, csum_end - start,
- MAX_ORDERED_SUM_BYTES(root->fs_info));
- sums = kzalloc(btrfs_ordered_sum_size(root->fs_info,
- size),
+ MAX_ORDERED_SUM_BYTES(fs_info));
+ sums = kzalloc(btrfs_ordered_sum_size(fs_info, size),
GFP_NOFS);
if (!sums) {
ret = -ENOMEM;
@@ -407,16 +409,16 @@ int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end,
sums->len = (int)size;
offset = (start - key.offset) >>
- root->fs_info->sb->s_blocksize_bits;
+ fs_info->sb->s_blocksize_bits;
offset *= csum_size;
- size >>= root->fs_info->sb->s_blocksize_bits;
+ size >>= fs_info->sb->s_blocksize_bits;
read_extent_buffer(path->nodes[0],
sums->sums,
((unsigned long)item) + offset,
csum_size * size);
- start += root->fs_info->sectorsize * size;
+ start += fs_info->sectorsize * size;
list_add_tail(&sums->list, &tmplist);
}
path->slots[0]++;
@@ -437,6 +439,7 @@ fail:
int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode,
struct bio *bio, u64 file_start, int contig)
{
+ struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
struct btrfs_ordered_sum *sums;
struct btrfs_ordered_extent *ordered = NULL;
char *data;
@@ -449,8 +452,7 @@ int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode,
u64 offset;
WARN_ON(bio->bi_vcnt <= 0);
- sums = kzalloc(btrfs_ordered_sum_size(root->fs_info,
- bio->bi_iter.bi_size),
+ sums = kzalloc(btrfs_ordered_sum_size(fs_info, bio->bi_iter.bi_size),
GFP_NOFS);
if (!sums)
return -ENOMEM;
@@ -477,9 +479,9 @@ int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode,
data = kmap_atomic(bvec->bv_page);
- nr_sectors = BTRFS_BYTES_TO_BLKS(root->fs_info,
- bvec->bv_len + root->fs_info->sectorsize
- - 1);
+ nr_sectors = BTRFS_BYTES_TO_BLKS(fs_info,
+ bvec->bv_len + fs_info->sectorsize
+ - 1);
for (i = 0; i < nr_sectors; i++) {
if (offset >= ordered->file_offset + ordered->len ||
@@ -494,8 +496,8 @@ int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode,
bytes_left = bio->bi_iter.bi_size - total_bytes;
- sums = kzalloc(btrfs_ordered_sum_size(root->fs_info, bytes_left),
- GFP_NOFS);
+ sums = kzalloc(btrfs_ordered_sum_size(fs_info, bytes_left),
+ GFP_NOFS);
BUG_ON(!sums); /* -ENOMEM */
sums->len = bytes_left;
ordered = btrfs_lookup_ordered_extent(inode,
@@ -511,15 +513,15 @@ int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode,
sums->sums[index] = ~(u32)0;
sums->sums[index]
= btrfs_csum_data(data + bvec->bv_offset
- + (i * root->fs_info->sectorsize),
+ + (i * fs_info->sectorsize),
sums->sums[index],
- root->fs_info->sectorsize);
+ fs_info->sectorsize);
btrfs_csum_final(sums->sums[index],
(char *)(sums->sums + index));
index++;
- offset += root->fs_info->sectorsize;
- this_sum_bytes += root->fs_info->sectorsize;
- total_bytes += root->fs_info->sectorsize;
+ offset += fs_info->sectorsize;
+ this_sum_bytes += fs_info->sectorsize;
+ total_bytes += fs_info->sectorsize;
}
kunmap_atomic(data);
@@ -546,15 +548,16 @@ static noinline void truncate_one_csum(struct btrfs_root *root,
struct btrfs_key *key,
u64 bytenr, u64 len)
{
+ struct btrfs_fs_info *fs_info = root->fs_info;
struct extent_buffer *leaf;
- u16 csum_size = btrfs_super_csum_size(root->fs_info->super_copy);
+ u16 csum_size = btrfs_super_csum_size(fs_info->super_copy);
u64 csum_end;
u64 end_byte = bytenr + len;
- u32 blocksize_bits = root->fs_info->sb->s_blocksize_bits;
+ u32 blocksize_bits = fs_info->sb->s_blocksize_bits;
leaf = path->nodes[0];
csum_end = btrfs_item_size_nr(leaf, path->slots[0]) / csum_size;
- csum_end <<= root->fs_info->sb->s_blocksize_bits;
+ csum_end <<= fs_info->sb->s_blocksize_bits;
csum_end += key->offset;
if (key->offset < bytenr && csum_end <= end_byte) {
@@ -581,7 +584,7 @@ static noinline void truncate_one_csum(struct btrfs_root *root,
btrfs_truncate_item(root, path, new_size, 0);
key->offset = end_byte;
- btrfs_set_item_key_safe(root->fs_info, path, key);
+ btrfs_set_item_key_safe(fs_info, path, key);
} else {
BUG();
}
@@ -601,8 +604,8 @@ int btrfs_del_csums(struct btrfs_trans_handle *trans,
u64 csum_end;
struct extent_buffer *leaf;
int ret;
- u16 csum_size = btrfs_super_csum_size(root->fs_info->super_copy);
- int blocksize_bits = root->fs_info->sb->s_blocksize_bits;
+ u16 csum_size = btrfs_super_csum_size(fs_info->super_copy);
+ int blocksize_bits = fs_info->sb->s_blocksize_bits;
path = btrfs_alloc_path();
if (!path)
@@ -711,6 +714,7 @@ int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_ordered_sum *sums)
{
+ struct btrfs_fs_info *fs_info = root->fs_info;
struct btrfs_key file_key;
struct btrfs_key found_key;
struct btrfs_path *path;
@@ -726,7 +730,7 @@ int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans,
int index = 0;
int found_next;
int ret;
- u16 csum_size = btrfs_super_csum_size(root->fs_info->super_copy);
+ u16 csum_size = btrfs_super_csum_size(fs_info->super_copy);
path = btrfs_alloc_path();
if (!path)
@@ -759,7 +763,7 @@ again:
leaf = path->nodes[0];
item_size = btrfs_item_size_nr(leaf, path->slots[0]);
if ((item_size / csum_size) >=
- MAX_CSUM_ITEMS(root->fs_info, csum_size)) {
+ MAX_CSUM_ITEMS(fs_info, csum_size)) {
/* already at max size, make a new one */
goto insert;
}
@@ -805,11 +809,11 @@ again:
leaf = path->nodes[0];
btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]);
csum_offset = (bytenr - found_key.offset) >>
- root->fs_info->sb->s_blocksize_bits;
+ fs_info->sb->s_blocksize_bits;
if (found_key.type != BTRFS_EXTENT_CSUM_KEY ||
found_key.objectid != BTRFS_EXTENT_CSUM_OBJECTID ||
- csum_offset >= MAX_CSUM_ITEMS(root->fs_info, csum_size)) {
+ csum_offset >= MAX_CSUM_ITEMS(fs_info, csum_size)) {
goto insert;
}
@@ -827,12 +831,13 @@ again:
free_space = btrfs_leaf_free_space(root, leaf) -
sizeof(struct btrfs_item) - csum_size;
tmp = sums->len - total_bytes;
- tmp >>= root->fs_info->sb->s_blocksize_bits;
+ tmp >>= fs_info->sb->s_blocksize_bits;
WARN_ON(tmp < 1);
extend_nr = max_t(int, 1, (int)tmp);
diff = (csum_offset + extend_nr) * csum_size;
- diff = min(diff, MAX_CSUM_ITEMS(root->fs_info, csum_size) * csum_size);
+ diff = min(diff,
+ MAX_CSUM_ITEMS(fs_info, csum_size) * csum_size);
diff = diff - btrfs_item_size_nr(leaf, path->slots[0]);
diff = min(free_space, diff);
@@ -851,12 +856,12 @@ insert:
u64 tmp;
tmp = sums->len - total_bytes;
- tmp >>= root->fs_info->sb->s_blocksize_bits;
+ tmp >>= fs_info->sb->s_blocksize_bits;
tmp = min(tmp, (next_offset - file_key.offset) >>
- root->fs_info->sb->s_blocksize_bits);
+ fs_info->sb->s_blocksize_bits);
tmp = max((u64)1, tmp);
- tmp = min(tmp, (u64)MAX_CSUM_ITEMS(root->fs_info, csum_size));
+ tmp = min(tmp, (u64)MAX_CSUM_ITEMS(fs_info, csum_size));
ins_size = csum_size * tmp;
} else {
ins_size = csum_size;
@@ -878,7 +883,7 @@ csum:
csum_offset * csum_size);
found:
ins_size = (u32)(sums->len - total_bytes) >>
- root->fs_info->sb->s_blocksize_bits;
+ fs_info->sb->s_blocksize_bits;
ins_size *= csum_size;
ins_size = min_t(u32, (unsigned long)item_end - (unsigned long)item,
ins_size);
@@ -886,7 +891,7 @@ found:
ins_size);
ins_size /= csum_size;
- total_bytes += ins_size * root->fs_info->sectorsize;
+ total_bytes += ins_size * fs_info->sectorsize;
index += ins_size;
btrfs_mark_buffer_dirty(path->nodes[0]);
@@ -909,6 +914,7 @@ void btrfs_extent_item_to_extent_map(struct inode *inode,
const bool new_inline,
struct extent_map *em)
{
+ struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
struct btrfs_root *root = BTRFS_I(inode)->root;
struct extent_buffer *leaf = path->nodes[0];
const int slot = path->slots[0];
@@ -918,7 +924,7 @@ void btrfs_extent_item_to_extent_map(struct inode *inode,
u8 type = btrfs_file_extent_type(leaf, fi);
int compress_type = btrfs_file_extent_compression(leaf, fi);
- em->bdev = root->fs_info->fs_devices->latest_bdev;
+ em->bdev = fs_info->fs_devices->latest_bdev;
btrfs_item_key_to_cpu(leaf, &key, slot);
extent_start = key.offset;
@@ -930,7 +936,7 @@ void btrfs_extent_item_to_extent_map(struct inode *inode,
size_t size;
size = btrfs_file_extent_inline_len(leaf, slot, fi);
extent_end = ALIGN(extent_start + size,
- root->fs_info->sectorsize);
+ fs_info->sectorsize);
}
em->ram_bytes = btrfs_file_extent_ram_bytes(leaf, fi);
@@ -973,7 +979,7 @@ void btrfs_extent_item_to_extent_map(struct inode *inode,
em->compress_type = compress_type;
}
} else {
- btrfs_err(root->fs_info,
+ btrfs_err(fs_info,
"unknown file extent item type %d, inode %llu, offset %llu, root %llu",
type, btrfs_ino(inode), extent_start,
root->root_key.objectid);
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-09 05:42:30 +0300