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Diffstat (limited to 'fs/btrfs/file-item.c')
-rw-r--r--fs/btrfs/file-item.c105
1 files changed, 91 insertions, 14 deletions
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index 6f3848860283..54c84daec9b5 100644
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -182,7 +182,7 @@ static int __btrfs_lookup_bio_sums(struct btrfs_root *root,
if (!path)
return -ENOMEM;
- nblocks = bio->bi_size >> inode->i_sb->s_blocksize_bits;
+ nblocks = bio->bi_iter.bi_size >> inode->i_sb->s_blocksize_bits;
if (!dst) {
if (nblocks * csum_size > BTRFS_BIO_INLINE_CSUM_SIZE) {
btrfs_bio->csum_allocated = kmalloc(nblocks * csum_size,
@@ -201,7 +201,7 @@ static int __btrfs_lookup_bio_sums(struct btrfs_root *root,
csum = (u8 *)dst;
}
- if (bio->bi_size > PAGE_CACHE_SIZE * 8)
+ if (bio->bi_iter.bi_size > PAGE_CACHE_SIZE * 8)
path->reada = 2;
WARN_ON(bio->bi_vcnt <= 0);
@@ -217,7 +217,7 @@ static int __btrfs_lookup_bio_sums(struct btrfs_root *root,
path->skip_locking = 1;
}
- disk_bytenr = (u64)bio->bi_sector << 9;
+ disk_bytenr = (u64)bio->bi_iter.bi_sector << 9;
if (dio)
offset = logical_offset;
while (bio_index < bio->bi_vcnt) {
@@ -246,8 +246,8 @@ static int __btrfs_lookup_bio_sums(struct btrfs_root *root,
offset + bvec->bv_len - 1,
EXTENT_NODATASUM, GFP_NOFS);
} else {
- printk(KERN_INFO "btrfs no csum found "
- "for inode %llu start %llu\n",
+ btrfs_info(BTRFS_I(inode)->root->fs_info,
+ "no csum found for inode %llu start %llu",
btrfs_ino(inode), offset);
}
item = NULL;
@@ -281,10 +281,10 @@ static int __btrfs_lookup_bio_sums(struct btrfs_root *root,
found:
csum += count * csum_size;
nblocks -= count;
+ bio_index += count;
while (count--) {
disk_bytenr += bvec->bv_len;
offset += bvec->bv_len;
- bio_index++;
bvec++;
}
}
@@ -302,7 +302,7 @@ int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode,
struct btrfs_dio_private *dip, struct bio *bio,
u64 offset)
{
- int len = (bio->bi_sector << 9) - dip->disk_bytenr;
+ int len = (bio->bi_iter.bi_sector << 9) - dip->disk_bytenr;
u16 csum_size = btrfs_super_csum_size(root->fs_info->super_copy);
int ret;
@@ -447,11 +447,12 @@ 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, bio->bi_size), GFP_NOFS);
+ sums = kzalloc(btrfs_ordered_sum_size(root, bio->bi_iter.bi_size),
+ GFP_NOFS);
if (!sums)
return -ENOMEM;
- sums->len = bio->bi_size;
+ sums->len = bio->bi_iter.bi_size;
INIT_LIST_HEAD(&sums->list);
if (contig)
@@ -461,7 +462,7 @@ int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode,
ordered = btrfs_lookup_ordered_extent(inode, offset);
BUG_ON(!ordered); /* Logic error */
- sums->bytenr = (u64)bio->bi_sector << 9;
+ sums->bytenr = (u64)bio->bi_iter.bi_sector << 9;
index = 0;
while (bio_index < bio->bi_vcnt) {
@@ -476,7 +477,7 @@ int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode,
btrfs_add_ordered_sum(inode, ordered, sums);
btrfs_put_ordered_extent(ordered);
- bytes_left = bio->bi_size - total_bytes;
+ bytes_left = bio->bi_iter.bi_size - total_bytes;
sums = kzalloc(btrfs_ordered_sum_size(root, bytes_left),
GFP_NOFS);
@@ -484,7 +485,7 @@ int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode,
sums->len = bytes_left;
ordered = btrfs_lookup_ordered_extent(inode, offset);
BUG_ON(!ordered); /* Logic error */
- sums->bytenr = ((u64)bio->bi_sector << 9) +
+ sums->bytenr = ((u64)bio->bi_iter.bi_sector << 9) +
total_bytes;
index = 0;
}
@@ -749,13 +750,13 @@ again:
int slot = path->slots[0] + 1;
/* we didn't find a csum item, insert one */
nritems = btrfs_header_nritems(path->nodes[0]);
- if (path->slots[0] >= nritems - 1) {
+ if (!nritems || (path->slots[0] >= nritems - 1)) {
ret = btrfs_next_leaf(root, path);
if (ret == 1)
found_next = 1;
if (ret != 0)
goto insert;
- slot = 0;
+ slot = path->slots[0];
}
btrfs_item_key_to_cpu(path->nodes[0], &found_key, slot);
if (found_key.objectid != BTRFS_EXTENT_CSUM_OBJECTID ||
@@ -884,3 +885,79 @@ out:
fail_unlock:
goto out;
}
+
+void btrfs_extent_item_to_extent_map(struct inode *inode,
+ const struct btrfs_path *path,
+ struct btrfs_file_extent_item *fi,
+ const bool new_inline,
+ struct extent_map *em)
+{
+ struct btrfs_root *root = BTRFS_I(inode)->root;
+ struct extent_buffer *leaf = path->nodes[0];
+ const int slot = path->slots[0];
+ struct btrfs_key key;
+ u64 extent_start, extent_end;
+ u64 bytenr;
+ 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;
+ btrfs_item_key_to_cpu(leaf, &key, slot);
+ extent_start = key.offset;
+
+ if (type == BTRFS_FILE_EXTENT_REG ||
+ type == BTRFS_FILE_EXTENT_PREALLOC) {
+ extent_end = extent_start +
+ btrfs_file_extent_num_bytes(leaf, fi);
+ } else if (type == BTRFS_FILE_EXTENT_INLINE) {
+ size_t size;
+ size = btrfs_file_extent_inline_len(leaf, slot, fi);
+ extent_end = ALIGN(extent_start + size, root->sectorsize);
+ }
+
+ em->ram_bytes = btrfs_file_extent_ram_bytes(leaf, fi);
+ if (type == BTRFS_FILE_EXTENT_REG ||
+ type == BTRFS_FILE_EXTENT_PREALLOC) {
+ em->start = extent_start;
+ em->len = extent_end - extent_start;
+ em->orig_start = extent_start -
+ btrfs_file_extent_offset(leaf, fi);
+ em->orig_block_len = btrfs_file_extent_disk_num_bytes(leaf, fi);
+ bytenr = btrfs_file_extent_disk_bytenr(leaf, fi);
+ if (bytenr == 0) {
+ em->block_start = EXTENT_MAP_HOLE;
+ return;
+ }
+ if (compress_type != BTRFS_COMPRESS_NONE) {
+ set_bit(EXTENT_FLAG_COMPRESSED, &em->flags);
+ em->compress_type = compress_type;
+ em->block_start = bytenr;
+ em->block_len = em->orig_block_len;
+ } else {
+ bytenr += btrfs_file_extent_offset(leaf, fi);
+ em->block_start = bytenr;
+ em->block_len = em->len;
+ if (type == BTRFS_FILE_EXTENT_PREALLOC)
+ set_bit(EXTENT_FLAG_PREALLOC, &em->flags);
+ }
+ } else if (type == BTRFS_FILE_EXTENT_INLINE) {
+ em->block_start = EXTENT_MAP_INLINE;
+ em->start = extent_start;
+ em->len = extent_end - extent_start;
+ /*
+ * Initialize orig_start and block_len with the same values
+ * as in inode.c:btrfs_get_extent().
+ */
+ em->orig_start = EXTENT_MAP_HOLE;
+ em->block_len = (u64)-1;
+ if (!new_inline && compress_type != BTRFS_COMPRESS_NONE) {
+ set_bit(EXTENT_FLAG_COMPRESSED, &em->flags);
+ em->compress_type = compress_type;
+ }
+ } else {
+ btrfs_err(root->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 2.46.0) at 2025-08-19 11:04:05 +0000