};
noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len,
- u64 *orig_start, u64 *orig_block_len,
+ u64 *orig_block_len,
u64 *ram_bytes, struct btrfs_file_extent *file_extent,
bool nowait, bool strict);
cb = alloc_compressed_bio(inode, file_offset, REQ_OP_READ,
end_bbio_compressed_read);
- cb->start = em->orig_start;
+ cb->start = em->start - em->offset;
em_len = em->len;
em_start = em->start;
*/
if (key.offset > start) {
em->start = start;
- em->orig_start = start;
em->block_start = EXTENT_MAP_HOLE;
em->disk_bytenr = EXTENT_MAP_HOLE;
em->disk_num_bytes = 0;
if (!IS_ENABLED(CONFIG_BTRFS_DEBUG))
return;
btrfs_crit(fs_info,
-"%s, start=%llu len=%llu disk_bytenr=%llu disk_num_bytes=%llu ram_bytes=%llu offset=%llu orig_start=%llu block_start=%llu block_len=%llu flags=0x%x",
+"%s, start=%llu len=%llu disk_bytenr=%llu disk_num_bytes=%llu ram_bytes=%llu offset=%llu block_start=%llu block_len=%llu flags=0x%x",
prefix, em->start, em->len, em->disk_bytenr, em->disk_num_bytes,
- em->ram_bytes, em->offset, em->orig_start, em->block_start,
+ em->ram_bytes, em->offset, em->block_start,
em->block_len, em->flags);
ASSERT(0);
}
if (em->disk_num_bytes != em->block_len)
dump_extent_map(fs_info,
"mismatch disk_num_bytes/block_len", em);
- /*
- * Here we only check the start/orig_start/offset for
- * compressed extents as that's the only case where
- * orig_start is utilized.
- */
- if (em->orig_start != em->start - em->offset)
- dump_extent_map(fs_info,
- "mismatch orig_start/offset/start", em);
-
} else if (em->block_start != em->disk_bytenr + em->offset) {
dump_extent_map(fs_info,
"mismatch block_start/disk_bytenr/offset", em);
merge = rb_entry(rb, struct extent_map, rb_node);
if (rb && can_merge_extent_map(merge) && mergeable_maps(merge, em)) {
em->start = merge->start;
- em->orig_start = merge->orig_start;
em->len += merge->len;
em->block_len += merge->block_len;
em->block_start = merge->block_start;
split->len = start - em->start;
if (em->block_start < EXTENT_MAP_LAST_BYTE) {
- split->orig_start = em->orig_start;
split->block_start = em->block_start;
if (compressed)
split->offset = em->offset;
split->ram_bytes = em->ram_bytes;
} else {
- split->orig_start = split->start;
split->block_len = 0;
split->block_start = em->block_start;
split->disk_bytenr = em->disk_bytenr;
split->ram_bytes = em->ram_bytes;
if (compressed) {
split->block_len = em->block_len;
- split->orig_start = em->orig_start;
} else {
const u64 diff = end - em->start;
split->block_len = split->len;
split->block_start += diff;
- split->orig_start = em->orig_start;
}
} else {
split->disk_num_bytes = 0;
split->offset = 0;
split->ram_bytes = split->len;
- split->orig_start = split->start;
split->block_len = 0;
}
split_pre->disk_bytenr = new_logical;
split_pre->disk_num_bytes = split_pre->len;
split_pre->offset = 0;
- split_pre->orig_start = split_pre->start;
split_pre->block_start = new_logical;
split_pre->block_len = split_pre->len;
split_pre->ram_bytes = split_pre->len;
split_mid->disk_bytenr = em->block_start + pre;
split_mid->disk_num_bytes = split_mid->len;
split_mid->offset = 0;
- split_mid->orig_start = split_mid->start;
split_mid->block_start = em->block_start + pre;
split_mid->block_len = split_mid->len;
split_mid->ram_bytes = split_mid->len;
*/
u64 len;
- /*
- * The file offset of the original file extent before splitting.
- *
- * This is an in-memory only member, matching
- * extent_map::start - btrfs_file_extent_item::offset for
- * regular/preallocated extents. EXTENT_MAP_HOLE otherwise.
- */
- u64 orig_start;
-
/*
* The bytenr of the full on-disk extent.
*
type == BTRFS_FILE_EXTENT_PREALLOC) {
em->start = extent_start;
em->len = btrfs_file_extent_end(path) - extent_start;
- em->orig_start = extent_start -
- btrfs_file_extent_offset(leaf, fi);
bytenr = btrfs_file_extent_disk_bytenr(leaf, fi);
if (bytenr == 0) {
em->block_start = EXTENT_MAP_HOLE;
em->len = fs_info->sectorsize;
em->offset = 0;
/*
- * Initialize orig_start and block_len with the same values
+ * Initialize block_len with the same values
* as in inode.c:btrfs_get_extent().
*/
- em->orig_start = EXTENT_MAP_HOLE;
em->block_len = (u64)-1;
extent_map_set_compression(em, compress_type);
} else {
&cached_state);
}
ret = can_nocow_extent(&inode->vfs_inode, lockstart, &num_bytes,
- NULL, NULL, NULL, NULL, nowait, false);
+ NULL, NULL, NULL, nowait, false);
if (ret <= 0)
btrfs_drew_write_unlock(&root->snapshot_lock);
else
hole_em->start = offset;
hole_em->len = end - offset;
hole_em->ram_bytes = hole_em->len;
- hole_em->orig_start = offset;
hole_em->block_start = EXTENT_MAP_HOLE;
hole_em->disk_bytenr = EXTENT_MAP_HOLE;
u64 end, struct writeback_control *wbc,
bool pages_dirty);
static struct extent_map *create_io_em(struct btrfs_inode *inode, u64 start,
- u64 len, u64 orig_start, u64 block_start,
+ u64 len, u64 block_start,
u64 block_len, u64 disk_num_bytes,
u64 ram_bytes, int compress_type,
const struct btrfs_file_extent *file_extent,
em = create_io_em(inode, start,
async_extent->ram_size, /* len */
- start, /* orig_start */
ins.objectid, /* block_start */
ins.offset, /* block_len */
ins.offset, /* orig_block_len */
&cached);
em = create_io_em(inode, start, ins.offset, /* len */
- start, /* orig_start */
ins.objectid, /* block_start */
ins.offset, /* block_len */
ins.offset, /* orig_block_len */
is_prealloc = extent_type == BTRFS_FILE_EXTENT_PREALLOC;
if (is_prealloc) {
- u64 orig_start = found_key.offset - nocow_args.extent_offset;
struct extent_map *em;
em = create_io_em(inode, cur_offset, nocow_args.num_bytes,
- orig_start,
nocow_args.disk_bytenr, /* block_start */
nocow_args.num_bytes, /* block_len */
nocow_args.disk_num_bytes, /* orig_block_len */
}
hole_em->start = cur_offset;
hole_em->len = hole_size;
- hole_em->orig_start = cur_offset;
hole_em->block_start = EXTENT_MAP_HOLE;
hole_em->disk_bytenr = EXTENT_MAP_HOLE;
goto out;
}
em->start = EXTENT_MAP_HOLE;
- em->orig_start = EXTENT_MAP_HOLE;
em->disk_bytenr = EXTENT_MAP_HOLE;
em->len = (u64)-1;
em->block_len = (u64)-1;
/* New extent overlaps with existing one */
em->start = start;
- em->orig_start = start;
em->len = found_key.offset - start;
em->block_start = EXTENT_MAP_HOLE;
goto insert;
}
not_found:
em->start = start;
- em->orig_start = start;
em->len = len;
em->block_start = EXTENT_MAP_HOLE;
insert:
struct btrfs_dio_data *dio_data,
const u64 start,
const u64 len,
- const u64 orig_start,
const u64 block_start,
const u64 block_len,
const u64 orig_block_len,
struct btrfs_ordered_extent *ordered;
if (type != BTRFS_ORDERED_NOCOW) {
- em = create_io_em(inode, start, len, orig_start, block_start,
+ em = create_io_em(inode, start, len, block_start,
block_len, orig_block_len, ram_bytes,
BTRFS_COMPRESS_NONE, /* compress_type */
file_extent, type);
file_extent.ram_bytes = ins.offset;
file_extent.offset = 0;
file_extent.compression = BTRFS_COMPRESS_NONE;
- em = btrfs_create_dio_extent(inode, dio_data, start, ins.offset, start,
+ em = btrfs_create_dio_extent(inode, dio_data, start, ins.offset,
ins.objectid, ins.offset, ins.offset,
ins.offset, BTRFS_ORDERED_REGULAR,
&file_extent);
* any ordered extents.
*/
noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len,
- u64 *orig_start, u64 *orig_block_len,
+ u64 *orig_block_len,
u64 *ram_bytes, struct btrfs_file_extent *file_extent,
bool nowait, bool strict)
{
}
}
- if (orig_start)
- *orig_start = key.offset - nocow_args.extent_offset;
if (orig_block_len)
*orig_block_len = nocow_args.disk_num_bytes;
if (file_extent)
/* The callers of this must take lock_extent() */
static struct extent_map *create_io_em(struct btrfs_inode *inode, u64 start,
- u64 len, u64 orig_start, u64 block_start,
+ u64 len, u64 block_start,
u64 block_len, u64 disk_num_bytes,
u64 ram_bytes, int compress_type,
const struct btrfs_file_extent *file_extent,
ASSERT(ram_bytes == len);
/* Since it's a new extent, we should not have any offset. */
- ASSERT(orig_start == start);
+ ASSERT(file_extent->offset == 0);
break;
case BTRFS_ORDERED_COMPRESSED:
/* Must be compressed. */
return ERR_PTR(-ENOMEM);
em->start = start;
- em->orig_start = orig_start;
em->len = len;
em->block_len = block_len;
em->block_start = block_start;
struct btrfs_file_extent file_extent;
struct extent_map *em = *map;
int type;
- u64 block_start, orig_start, orig_block_len, ram_bytes;
+ u64 block_start, orig_block_len, ram_bytes;
struct btrfs_block_group *bg;
bool can_nocow = false;
bool space_reserved = false;
len = min(len, em->len - (start - em->start));
block_start = em->block_start + (start - em->start);
- if (can_nocow_extent(inode, start, &len, &orig_start,
+ if (can_nocow_extent(inode, start, &len,
&orig_block_len, &ram_bytes,
&file_extent, false, false) == 1) {
bg = btrfs_inc_nocow_writers(fs_info, block_start);
space_reserved = true;
em2 = btrfs_create_dio_extent(BTRFS_I(inode), dio_data, start, len,
- orig_start, block_start,
+ block_start,
len, orig_block_len,
ram_bytes, type,
&file_extent);
}
em->start = cur_offset;
- em->orig_start = cur_offset;
em->len = ins.offset;
em->block_start = ins.objectid;
em->disk_bytenr = ins.objectid;
disk_io_size = em->block_len;
count = em->block_len;
encoded->unencoded_len = em->ram_bytes;
- encoded->unencoded_offset = iocb->ki_pos - em->orig_start;
+ encoded->unencoded_offset = iocb->ki_pos - (em->start - em->offset);
ret = btrfs_encoded_io_compression_from_extent(fs_info,
extent_map_compression(em));
if (ret < 0)
file_extent.offset = encoded->unencoded_offset;
file_extent.compression = compression;
em = create_io_em(inode, start, num_bytes,
- start - encoded->unencoded_offset, ins.objectid,
+ ins.objectid,
ins.offset, ins.offset, ram_bytes, compression,
&file_extent, BTRFS_ORDERED_COMPRESSED);
if (IS_ERR(em)) {
free_extent_map(em);
em = NULL;
- ret = can_nocow_extent(inode, start, &len, NULL, NULL, NULL, NULL, false, true);
+ ret = can_nocow_extent(inode, start, &len, NULL, NULL, NULL, false, true);
if (ret < 0) {
goto out;
} else if (ret) {
return -ENOMEM;
em->start = start;
- em->orig_start = start;
em->len = end + 1 - start;
em->block_len = em->len;
em->block_start = block_start;
}
em->start = SZ_16K;
- em->orig_start = SZ_16K;
em->len = SZ_4K;
em->block_start = SZ_32K; /* avoid merging */
em->block_len = SZ_4K;
/* Add [0, 8K), should return [0, 16K) instead. */
em->start = start;
- em->orig_start = start;
em->len = len;
em->block_start = start;
em->block_len = len;
}
em->start = SZ_4K;
- em->orig_start = SZ_4K;
em->len = SZ_4K;
em->block_start = SZ_4K;
em->block_len = SZ_4K;
/* Add [4K, 8K) */
em->start = SZ_4K;
- em->orig_start = SZ_4K;
em->len = SZ_4K;
em->block_start = SZ_4K;
em->block_len = SZ_4K;
/* Add [8K, 32K) */
em->start = SZ_8K;
- em->orig_start = SZ_8K;
em->len = 24 * SZ_1K;
em->block_start = SZ_16K; /* avoid merging */
em->block_len = 24 * SZ_1K;
}
/* Add [0K, 32K) */
em->start = 0;
- em->orig_start = 0;
em->len = SZ_32K;
em->block_start = 0;
em->block_len = SZ_32K;
}
em->start = start;
- em->orig_start = start;
em->len = len;
em->block_start = block_start;
em->block_len = SZ_4K;
}
em->start = SZ_4K;
- em->orig_start = SZ_4K;
em->len = SZ_4K;
em->block_start = SZ_16K;
em->block_len = SZ_16K;
/* [32K, 48K), not pinned */
em->start = SZ_32K;
- em->orig_start = SZ_32K;
em->len = SZ_16K;
em->block_start = SZ_32K;
em->block_len = SZ_16K;
test_err("unexpected flags set, want 0 have %u", em->flags);
goto out;
}
- if (em->orig_start != em->start) {
- test_err("wrong orig offset, want %llu, have %llu", em->start,
- em->orig_start);
+ if (em->offset != 0) {
+ test_err("wrong offset, want 0, have %llu", em->offset);
goto out;
}
offset = em->start + em->len;
test_err("unexpected flags set, want 0 have %u", em->flags);
goto out;
}
- if (em->orig_start != em->start) {
- test_err("wrong orig offset, want %llu, have %llu", em->start,
- em->orig_start);
+ if (em->offset != 0) {
+ test_err("wrong offset, want 0, have %llu", em->offset);
goto out;
}
disk_bytenr = em->block_start;
test_err("unexpected flags set, want 0 have %u", em->flags);
goto out;
}
- if (em->orig_start != orig_start) {
- test_err("wrong orig offset, want %llu, have %llu",
- orig_start, em->orig_start);
+ if (em->start - em->offset != orig_start) {
+ test_err("wrong offset, em->start=%llu em->offset=%llu orig_start=%llu",
+ em->start, em->offset, orig_start);
goto out;
}
disk_bytenr += (em->start - orig_start);
prealloc_only, em->flags);
goto out;
}
- if (em->orig_start != em->start) {
- test_err("wrong orig offset, want %llu, have %llu", em->start,
- em->orig_start);
+ if (em->offset != 0) {
+ test_err("wrong offset, want 0, have %llu", em->offset);
goto out;
}
offset = em->start + em->len;
prealloc_only, em->flags);
goto out;
}
- if (em->orig_start != em->start) {
- test_err("wrong orig offset, want %llu, have %llu", em->start,
- em->orig_start);
+ if (em->offset != 0) {
+ test_err("wrong offset, want 0, have %llu", em->offset);
goto out;
}
disk_bytenr = em->block_start;
test_err("unexpected flags set, want 0 have %u", em->flags);
goto out;
}
- if (em->orig_start != orig_start) {
- test_err("unexpected orig offset, wanted %llu, have %llu",
- orig_start, em->orig_start);
+ if (em->start - em->offset != orig_start) {
+ test_err("unexpected offset, wanted %llu, have %llu",
+ em->start - orig_start, em->offset);
goto out;
}
- if (em->block_start != (disk_bytenr + (em->start - em->orig_start))) {
+ if (em->block_start != disk_bytenr + em->offset) {
test_err("unexpected block start, wanted %llu, have %llu",
- disk_bytenr + (em->start - em->orig_start),
- em->block_start);
+ disk_bytenr + em->offset, em->block_start);
goto out;
}
offset = em->start + em->len;
prealloc_only, em->flags);
goto out;
}
- if (em->orig_start != orig_start) {
- test_err("wrong orig offset, want %llu, have %llu", orig_start,
- em->orig_start);
+ if (em->start - em->offset != orig_start) {
+ test_err("wrong offset, em->start=%llu em->offset=%llu orig_start=%llu",
+ em->start, em->offset, orig_start);
goto out;
}
- if (em->block_start != (disk_bytenr + (em->start - em->orig_start))) {
+ if (em->block_start != disk_bytenr + em->offset) {
test_err("unexpected block start, wanted %llu, have %llu",
- disk_bytenr + (em->start - em->orig_start),
- em->block_start);
+ disk_bytenr + em->offset, em->block_start);
goto out;
}
offset = em->start + em->len;
compressed_only, em->flags);
goto out;
}
- if (em->orig_start != em->start) {
- test_err("wrong orig offset, want %llu, have %llu",
- em->start, em->orig_start);
+ if (em->offset != 0) {
+ test_err("wrong offset, want 0, have %llu", em->offset);
goto out;
}
if (extent_map_compression(em) != BTRFS_COMPRESS_ZLIB) {
compressed_only, em->flags);
goto out;
}
- if (em->orig_start != em->start) {
- test_err("wrong orig offset, want %llu, have %llu",
- em->start, em->orig_start);
+ if (em->offset != 0) {
+ test_err("wrong offset, want 0, have %llu", em->offset);
goto out;
}
if (extent_map_compression(em) != BTRFS_COMPRESS_ZLIB) {
test_err("unexpected flags set, want 0 have %u", em->flags);
goto out;
}
- if (em->orig_start != em->start) {
- test_err("wrong orig offset, want %llu, have %llu", em->start,
- em->orig_start);
+ if (em->offset != 0) {
+ test_err("wrong offset, want 0, have %llu", em->offset);
goto out;
}
offset = em->start + em->len;
compressed_only, em->flags);
goto out;
}
- if (em->orig_start != orig_start) {
- test_err("wrong orig offset, want %llu, have %llu",
- em->start, orig_start);
+ if (em->start - em->offset != orig_start) {
+ test_err("wrong offset, em->start=%llu em->offset=%llu orig_start=%llu",
+ em->start, em->offset, orig_start);
goto out;
}
if (extent_map_compression(em) != BTRFS_COMPRESS_ZLIB) {
test_err("unexpected flags set, want 0 have %u", em->flags);
goto out;
}
- if (em->orig_start != em->start) {
- test_err("wrong orig offset, want %llu, have %llu", em->start,
- em->orig_start);
+ if (em->offset != 0) {
+ test_err("wrong offset, want 0, have %llu", em->offset);
goto out;
}
offset = em->start + em->len;
vacancy_only, em->flags);
goto out;
}
- if (em->orig_start != em->start) {
- test_err("wrong orig offset, want %llu, have %llu", em->start,
- em->orig_start);
+ if (em->offset != 0) {
+ test_err("wrong offset, want 0, have %llu", em->offset);
goto out;
}
offset = em->start + em->len;
test_err("unexpected flags set, want 0 have %u", em->flags);
goto out;
}
- if (em->orig_start != em->start) {
- test_err("wrong orig offset, want %llu, have %llu", em->start,
- em->orig_start);
+ if (em->offset != 0) {
+ test_err("wrong orig offset, want 0, have %llu", em->offset);
goto out;
}
ret = 0;
struct extent_buffer *leaf;
struct btrfs_key key;
enum btrfs_compression_type compress_type;
- u64 extent_offset = em->start - em->orig_start;
+ u64 extent_offset = em->offset;
u64 block_len;
int ret;
__field( u64, ino )
__field( u64, start )
__field( u64, len )
- __field( u64, orig_start )
__field( u64, block_start )
__field( u64, block_len )
__field( u32, flags )
__entry->ino = btrfs_ino(inode);
__entry->start = map->start;
__entry->len = map->len;
- __entry->orig_start = map->orig_start;
__entry->block_start = map->block_start;
__entry->block_len = map->block_len;
__entry->flags = map->flags;
__entry->refs = refcount_read(&map->refs);
),
- TP_printk_btrfs("root=%llu(%s) ino=%llu start=%llu len=%llu "
- "orig_start=%llu block_start=%llu(%s) "
- "block_len=%llu flags=%s refs=%u",
+ TP_printk_btrfs(
+"root=%llu(%s) ino=%llu start=%llu len=%llu block_start=%llu(%s) block_len=%llu flags=%s refs=%u",
show_root_type(__entry->root_objectid),
__entry->ino,
__entry->start,
__entry->len,
- __entry->orig_start,
show_map_type(__entry->block_start),
__entry->block_len,
show_map_flags(__entry->flags),
projects / users / hch / configfs.git / commitdiff