@@ -585,7 +585,7 @@ void btrfs_submit_compressed_read(struct btrfs_bio *bbio)
}
ASSERT(extent_map_is_compressed(em));
- compressed_len = em->block_len;
+ compressed_len = em->disk_num_bytes;
cb = alloc_compressed_bio(inode, file_offset, REQ_OP_READ,
end_bbio_comprssed_read);
@@ -186,11 +186,18 @@ static struct rb_node *__tree_search(struct rb_root *root, u64 offset,
return NULL;
}
+static inline u64 extent_map_block_len(const struct extent_map *em)
+{
+ if (extent_map_is_compressed(em))
+ return em->disk_num_bytes;
+ return em->len;
+}
+
static inline u64 extent_map_block_end(const struct extent_map *em)
{
- if (em->block_start + em->block_len < em->block_start)
+ if (em->block_start + extent_map_block_len(em) < em->block_start)
return (u64)-1;
- return em->block_start + em->block_len;
+ return em->block_start + extent_map_block_len(em);
}
static bool can_merge_extent_map(const struct extent_map *em)
@@ -288,10 +295,10 @@ static void dump_extent_map(const char *prefix, struct extent_map *em)
{
if (!IS_ENABLED(CONFIG_BTRFS_DEBUG))
return;
- pr_crit("%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\n",
+ pr_crit("%s, start=%llu len=%llu disk_bytenr=%llu disk_num_bytes=%llu ram_bytes=%llu offset=%llu block_start=%llu flags=0x%x\n",
prefix, em->start, em->len, em->disk_bytenr, em->disk_num_bytes,
em->ram_bytes, em->offset, em->block_start,
- em->block_len, em->flags);
+ em->flags);
ASSERT(0);
}
@@ -313,9 +320,6 @@ static void validate_extent_map(struct extent_map *em)
if (em->block_start != em->disk_bytenr)
dump_extent_map(
"mismatch block_start/disk_bytenr/offset", em);
- if (em->disk_num_bytes != em->block_len)
- dump_extent_map(
- "mismatch disk_num_bytes/block_len", em);
} else {
if (em->block_start != em->disk_bytenr + em->offset)
dump_extent_map(
@@ -354,7 +358,6 @@ static void try_merge_map(struct btrfs_inode *inode, struct extent_map *em)
if (rb && can_merge_extent_map(merge) && mergeable_maps(merge, em)) {
em->start = merge->start;
em->len += merge->len;
- em->block_len += merge->block_len;
em->block_start = merge->block_start;
em->generation = max(em->generation, merge->generation);
@@ -375,7 +378,6 @@ static void try_merge_map(struct btrfs_inode *inode, struct extent_map *em)
merge = rb_entry(rb, struct extent_map, rb_node);
if (rb && can_merge_extent_map(merge) && mergeable_maps(em, merge)) {
em->len += merge->len;
- em->block_len += merge->block_len;
if (em->disk_bytenr < EXTENT_MAP_LAST_BYTE)
merge_ondisk_extents(em, merge);
validate_extent_map(em);
@@ -669,7 +671,6 @@ static noinline int merge_extent_mapping(struct btrfs_inode *inode,
if (em->block_start < EXTENT_MAP_LAST_BYTE &&
!extent_map_is_compressed(em)) {
em->block_start += start_diff;
- em->block_len = em->len;
em->offset += start_diff;
}
return add_extent_mapping(inode, em, 0);
@@ -884,17 +885,11 @@ void btrfs_drop_extent_map_range(struct btrfs_inode *inode, u64 start, u64 end,
if (em->block_start < EXTENT_MAP_LAST_BYTE) {
split->block_start = em->block_start;
- if (compressed)
- split->block_len = em->block_len;
- else
- split->block_len = split->len;
split->disk_bytenr = em->disk_bytenr;
- split->disk_num_bytes = max(split->block_len,
- em->disk_num_bytes);
+ split->disk_num_bytes = em->disk_num_bytes;
split->offset = em->offset;
split->ram_bytes = em->ram_bytes;
} else {
- split->block_len = 0;
split->block_start = em->block_start;
split->disk_bytenr = em->disk_bytenr;
split->disk_num_bytes = 0;
@@ -924,23 +919,18 @@ void btrfs_drop_extent_map_range(struct btrfs_inode *inode, u64 start, u64 end,
split->generation = gen;
if (em->block_start < EXTENT_MAP_LAST_BYTE) {
- split->disk_num_bytes = max(em->block_len,
- em->disk_num_bytes);
+ split->disk_num_bytes = em->disk_num_bytes;
split->offset = em->offset + end - em->start;
split->ram_bytes = em->ram_bytes;
- if (compressed) {
- split->block_len = em->block_len;
- } else {
+ if (!compressed) {
const u64 diff = end - em->start;
- split->block_len = split->len;
split->block_start += diff;
}
} else {
split->disk_num_bytes = 0;
split->offset = 0;
split->ram_bytes = split->len;
- split->block_len = 0;
}
if (extent_map_in_tree(em)) {
@@ -1098,8 +1088,6 @@ int split_extent_map(struct btrfs_inode *inode, u64 start, u64 len, u64 pre,
split_pre->disk_num_bytes = split_pre->len;
split_pre->offset = 0;
split_pre->block_start = new_logical;
- split_pre->block_len = split_pre->len;
- split_pre->disk_num_bytes = split_pre->block_len;
split_pre->ram_bytes = split_pre->len;
split_pre->flags = flags;
split_pre->generation = em->generation;
@@ -1118,7 +1106,6 @@ int split_extent_map(struct btrfs_inode *inode, u64 start, u64 len, u64 pre,
split_mid->disk_num_bytes = split_mid->len;
split_mid->offset = 0;
split_mid->block_start = em->block_start + pre;
- split_mid->block_len = split_mid->len;
split_mid->ram_bytes = split_mid->len;
split_mid->flags = flags;
split_mid->generation = em->generation;
@@ -103,15 +103,6 @@ struct extent_map {
*/
u64 block_start;
- /*
- * The on-disk length for the file extent.
- *
- * For compressed extents it matches btrfs_file_extent_item::disk_num_bytes.
- * For uncompressed extents it matches extent_map::len.
- * For holes and inline extents it's -1 and shouldn't be used.
- */
- u64 block_len;
-
/*
* Generation of the extent map, for merged em it's the highest
* generation of all merged ems.
@@ -1306,11 +1306,9 @@ void btrfs_extent_item_to_extent_map(struct btrfs_inode *inode,
if (compress_type != BTRFS_COMPRESS_NONE) {
extent_map_set_compression(em, compress_type);
em->block_start = bytenr;
- em->block_len = em->disk_num_bytes;
} else {
bytenr += btrfs_file_extent_offset(leaf, fi);
em->block_start = bytenr;
- em->block_len = em->len;
if (type == BTRFS_FILE_EXTENT_PREALLOC)
em->flags |= EXTENT_FLAG_PREALLOC;
}
@@ -1323,11 +1321,6 @@ void btrfs_extent_item_to_extent_map(struct btrfs_inode *inode,
em->start = 0;
em->len = fs_info->sectorsize;
em->offset = 0;
- /*
- * Initialize block_len with the same values
- * as in inode.c:btrfs_get_extent().
- */
- em->block_len = (u64)-1;
extent_map_set_compression(em, compress_type);
} else {
btrfs_err(fs_info,
@@ -2337,7 +2337,6 @@ static int fill_holes(struct btrfs_trans_handle *trans,
hole_em->block_start = EXTENT_MAP_HOLE;
hole_em->disk_bytenr = EXTENT_MAP_HOLE;
- hole_em->block_len = 0;
hole_em->disk_num_bytes = 0;
hole_em->generation = trans->transid;
@@ -139,7 +139,7 @@ static noinline int run_delalloc_cow(struct btrfs_inode *inode,
bool pages_dirty);
static struct extent_map *create_io_em(struct btrfs_inode *inode, u64 start,
u64 len, u64 block_start,
- u64 block_len, u64 disk_num_bytes,
+ u64 disk_num_bytes,
u64 ram_bytes, int compress_type,
struct btrfs_file_extent *file_extent,
int type);
@@ -1170,7 +1170,6 @@ static void submit_one_async_extent(struct async_chunk *async_chunk,
em = create_io_em(inode, start,
async_extent->ram_size, /* len */
ins.objectid, /* block_start */
- ins.offset, /* block_len */
ins.offset, /* orig_block_len */
async_extent->ram_size, /* ram_bytes */
async_extent->compress_type,
@@ -1439,7 +1438,6 @@ static noinline int cow_file_range(struct btrfs_inode *inode,
file_extent.compression = BTRFS_COMPRESS_NONE;
em = create_io_em(inode, start, ins.offset, /* len */
ins.objectid, /* block_start */
- ins.offset, /* block_len */
ins.offset, /* orig_block_len */
ram_size, /* ram_bytes */
BTRFS_COMPRESS_NONE, /* compress_type */
@@ -2164,7 +2162,6 @@ static noinline int run_delalloc_nocow(struct btrfs_inode *inode,
em = create_io_em(inode, cur_offset, nocow_args.num_bytes,
nocow_args.disk_bytenr, /* block_start */
- nocow_args.num_bytes, /* block_len */
nocow_args.disk_num_bytes, /* orig_block_len */
ram_bytes, BTRFS_COMPRESS_NONE,
&nocow_args.file_extent,
@@ -4957,7 +4954,6 @@ int btrfs_cont_expand(struct btrfs_inode *inode, loff_t oldsize, loff_t size)
hole_em->block_start = EXTENT_MAP_HOLE;
hole_em->disk_bytenr = EXTENT_MAP_HOLE;
- hole_em->block_len = 0;
hole_em->disk_num_bytes = 0;
hole_em->ram_bytes = hole_size;
hole_em->generation = btrfs_get_fs_generation(fs_info);
@@ -6818,7 +6814,6 @@ struct extent_map *btrfs_get_extent(struct btrfs_inode *inode,
em->start = EXTENT_MAP_HOLE;
em->disk_bytenr = EXTENT_MAP_HOLE;
em->len = (u64)-1;
- em->block_len = (u64)-1;
path = btrfs_alloc_path();
if (!path) {
@@ -6976,7 +6971,6 @@ static struct extent_map *btrfs_create_dio_extent(struct btrfs_inode *inode,
const u64 start,
const u64 len,
const u64 block_start,
- const u64 block_len,
const u64 orig_block_len,
const u64 ram_bytes,
const int type,
@@ -6987,14 +6981,14 @@ static struct extent_map *btrfs_create_dio_extent(struct btrfs_inode *inode,
if (type != BTRFS_ORDERED_NOCOW) {
em = create_io_em(inode, start, len, block_start,
- block_len, orig_block_len, ram_bytes,
+ orig_block_len, ram_bytes,
BTRFS_COMPRESS_NONE, /* compress_type */
file_extent, type);
if (IS_ERR(em))
goto out;
}
ordered = btrfs_alloc_ordered_extent(inode, start, len, len,
- block_start, block_len, 0,
+ block_start, len, 0,
(1 << type) |
(1 << BTRFS_ORDERED_DIRECT),
BTRFS_COMPRESS_NONE);
@@ -7046,7 +7040,7 @@ static struct extent_map *btrfs_new_extent_direct(struct btrfs_inode *inode,
file_extent.offset = 0;
file_extent.compression = BTRFS_COMPRESS_NONE;
em = btrfs_create_dio_extent(inode, dio_data, start, ins.offset,
- ins.objectid, ins.offset, ins.offset,
+ ins.objectid, ins.offset,
ins.offset, BTRFS_ORDERED_REGULAR,
&file_extent);
btrfs_dec_block_group_reservations(fs_info, ins.objectid);
@@ -7287,7 +7281,7 @@ static int lock_extent_direct(struct inode *inode, u64 lockstart, u64 lockend,
/* The callers of this must take lock_extent() */
static struct extent_map *create_io_em(struct btrfs_inode *inode, u64 start,
u64 len, u64 block_start,
- u64 block_len, u64 disk_num_bytes,
+ u64 disk_num_bytes,
u64 ram_bytes, int compress_type,
struct btrfs_file_extent *file_extent,
int type)
@@ -7309,16 +7303,10 @@ static struct extent_map *create_io_em(struct btrfs_inode *inode, u64 start,
switch (type) {
case BTRFS_ORDERED_PREALLOC:
- /* Uncompressed extents. */
- ASSERT(block_len == len);
-
/* We're only referring part of a larger preallocated extent. */
- ASSERT(block_len <= ram_bytes);
+ ASSERT(len <= ram_bytes);
break;
case BTRFS_ORDERED_REGULAR:
- /* Uncompressed extents. */
- ASSERT(block_len == len);
-
/* COW results a new extent matching our file extent size. */
ASSERT(disk_num_bytes == len);
ASSERT(ram_bytes == len);
@@ -7344,7 +7332,6 @@ static struct extent_map *create_io_em(struct btrfs_inode *inode, u64 start,
em->start = start;
em->len = len;
- em->block_len = block_len;
em->block_start = block_start;
em->disk_bytenr = file_extent->disk_bytenr;
em->disk_num_bytes = disk_num_bytes;
@@ -7433,7 +7420,7 @@ static int btrfs_get_blocks_direct_write(struct extent_map **map,
em2 = btrfs_create_dio_extent(BTRFS_I(inode), dio_data, start, len,
block_start,
- len, orig_block_len,
+ orig_block_len,
ram_bytes, type,
&file_extent);
btrfs_dec_nocow_writers(bg);
@@ -9587,7 +9574,6 @@ static int __btrfs_prealloc_file_range(struct inode *inode, int mode,
em->block_start = ins.objectid;
em->disk_bytenr = ins.objectid;
em->offset = 0;
- em->block_len = ins.offset;
em->disk_num_bytes = ins.offset;
em->ram_bytes = ins.offset;
em->flags |= EXTENT_FLAG_PREALLOC;
@@ -10084,12 +10070,12 @@ ssize_t btrfs_encoded_read(struct kiocb *iocb, struct iov_iter *iter,
* Bail if the buffer isn't large enough to return the whole
* compressed extent.
*/
- if (em->block_len > count) {
+ if (em->disk_num_bytes > count) {
ret = -ENOBUFS;
goto out_em;
}
- disk_io_size = em->block_len;
- count = em->block_len;
+ disk_io_size = em->disk_num_bytes;
+ count = em->disk_num_bytes;
encoded->unencoded_len = em->ram_bytes;
encoded->unencoded_offset = iocb->ki_pos - em->start + em->offset;
ret = btrfs_encoded_io_compression_from_extent(fs_info,
@@ -10335,7 +10321,7 @@ ssize_t btrfs_do_encoded_write(struct kiocb *iocb, struct iov_iter *from,
file_extent.compression = compression;
em = create_io_em(inode, start, num_bytes,
ins.objectid,
- ins.offset, ins.offset, ram_bytes, compression,
+ ins.offset, ram_bytes, compression,
&file_extent, BTRFS_ORDERED_COMPRESSED);
if (IS_ERR(em)) {
ret = PTR_ERR(em);
@@ -2912,7 +2912,6 @@ static noinline_for_stack int setup_relocation_extent_mapping(struct inode *inod
em->start = start;
em->len = end + 1 - start;
- em->block_len = em->len;
em->block_start = block_start;
em->disk_bytenr = block_start;
em->disk_num_bytes = em->len;
@@ -28,9 +28,10 @@ static int free_extent_map_tree(struct btrfs_inode *inode)
if (refcount_read(&em->refs) != 1) {
ret = -EINVAL;
test_err(
-"em leak: em (start %llu len %llu block_start %llu block_len %llu) refs %d",
+"em leak: em (start %llu len %llu block_start %llu disk_num_bytes %llu offset %llu) refs %d",
em->start, em->len, em->block_start,
- em->block_len, refcount_read(&em->refs));
+ em->disk_num_bytes, em->offset,
+ refcount_read(&em->refs));
refcount_set(&em->refs, 1);
}
@@ -77,7 +78,6 @@ static int test_case_1(struct btrfs_fs_info *fs_info, struct btrfs_inode *inode)
em->start = 0;
em->len = SZ_16K;
em->block_start = 0;
- em->block_len = SZ_16K;
em->disk_bytenr = 0;
em->disk_num_bytes = SZ_16K;
em->ram_bytes = SZ_16K;
@@ -101,7 +101,6 @@ static int test_case_1(struct btrfs_fs_info *fs_info, struct btrfs_inode *inode)
em->start = SZ_16K;
em->len = SZ_4K;
em->block_start = SZ_32K; /* avoid merging */
- em->block_len = SZ_4K;
em->disk_bytenr = SZ_32K; /* avoid merging */
em->disk_num_bytes = SZ_4K;
em->ram_bytes = SZ_4K;
@@ -125,7 +124,6 @@ static int test_case_1(struct btrfs_fs_info *fs_info, struct btrfs_inode *inode)
em->start = start;
em->len = len;
em->block_start = start;
- em->block_len = len;
em->disk_bytenr = start;
em->disk_num_bytes = len;
em->ram_bytes = len;
@@ -143,11 +141,11 @@ static int test_case_1(struct btrfs_fs_info *fs_info, struct btrfs_inode *inode)
goto out;
}
if (em->start != 0 || extent_map_end(em) != SZ_16K ||
- em->block_start != 0 || em->block_len != SZ_16K) {
+ em->block_start != 0 || em->disk_num_bytes != SZ_16K) {
test_err(
-"case1 [%llu %llu]: ret %d return a wrong em (start %llu len %llu block_start %llu block_len %llu",
+"case1 [%llu %llu]: ret %d return a wrong em (start %llu len %llu block_start %llu disk_num_bytes %llu",
start, start + len, ret, em->start, em->len,
- em->block_start, em->block_len);
+ em->block_start, em->disk_num_bytes);
ret = -EINVAL;
}
free_extent_map(em);
@@ -182,7 +180,6 @@ static int test_case_2(struct btrfs_fs_info *fs_info, struct btrfs_inode *inode)
em->start = 0;
em->len = SZ_1K;
em->block_start = EXTENT_MAP_INLINE;
- em->block_len = (u64)-1;
em->disk_bytenr = EXTENT_MAP_INLINE;
em->disk_num_bytes = 0;
em->ram_bytes = SZ_1K;
@@ -206,7 +203,6 @@ static int test_case_2(struct btrfs_fs_info *fs_info, struct btrfs_inode *inode)
em->start = SZ_4K;
em->len = SZ_4K;
em->block_start = SZ_4K;
- em->block_len = SZ_4K;
em->disk_bytenr = SZ_4K;
em->disk_num_bytes = SZ_4K;
em->ram_bytes = SZ_4K;
@@ -230,7 +226,6 @@ static int test_case_2(struct btrfs_fs_info *fs_info, struct btrfs_inode *inode)
em->start = 0;
em->len = SZ_1K;
em->block_start = EXTENT_MAP_INLINE;
- em->block_len = (u64)-1;
em->disk_bytenr = EXTENT_MAP_INLINE;
em->disk_num_bytes = 0;
em->ram_bytes = SZ_1K;
@@ -247,11 +242,10 @@ static int test_case_2(struct btrfs_fs_info *fs_info, struct btrfs_inode *inode)
goto out;
}
if (em->start != 0 || extent_map_end(em) != SZ_1K ||
- em->block_start != EXTENT_MAP_INLINE || em->block_len != (u64)-1) {
+ em->block_start != EXTENT_MAP_INLINE) {
test_err(
-"case2 [0 1K]: ret %d return a wrong em (start %llu len %llu block_start %llu block_len %llu",
- ret, em->start, em->len, em->block_start,
- em->block_len);
+"case2 [0 1K]: ret %d return a wrong em (start %llu len %llu block_start %llu",
+ ret, em->start, em->len, em->block_start);
ret = -EINVAL;
}
free_extent_map(em);
@@ -282,7 +276,6 @@ static int __test_case_3(struct btrfs_fs_info *fs_info,
em->start = SZ_4K;
em->len = SZ_4K;
em->block_start = SZ_4K;
- em->block_len = SZ_4K;
em->disk_bytenr = SZ_4K;
em->disk_num_bytes = SZ_4K;
em->ram_bytes = SZ_4K;
@@ -306,7 +299,6 @@ static int __test_case_3(struct btrfs_fs_info *fs_info,
em->start = 0;
em->len = SZ_16K;
em->block_start = 0;
- em->block_len = SZ_16K;
em->disk_bytenr = 0;
em->disk_num_bytes = SZ_16K;
em->ram_bytes = SZ_16K;
@@ -329,11 +321,11 @@ static int __test_case_3(struct btrfs_fs_info *fs_info,
* em->start.
*/
if (start < em->start || start + len > extent_map_end(em) ||
- em->start != em->block_start || em->len != em->block_len) {
+ em->start != em->block_start) {
test_err(
"case3 [%llu %llu): ret %d em (start %llu len %llu block_start %llu block_len %llu)",
start, start + len, ret, em->start, em->len,
- em->block_start, em->block_len);
+ em->block_start, em->disk_num_bytes);
ret = -EINVAL;
}
free_extent_map(em);
@@ -395,7 +387,6 @@ static int __test_case_4(struct btrfs_fs_info *fs_info,
em->start = 0;
em->len = SZ_8K;
em->block_start = 0;
- em->block_len = SZ_8K;
em->disk_bytenr = 0;
em->disk_num_bytes = SZ_8K;
em->ram_bytes = SZ_8K;
@@ -419,7 +410,6 @@ static int __test_case_4(struct btrfs_fs_info *fs_info,
em->start = SZ_8K;
em->len = 24 * SZ_1K;
em->block_start = SZ_16K; /* avoid merging */
- em->block_len = 24 * SZ_1K;
em->disk_bytenr = SZ_16K; /* avoid merging */
em->disk_num_bytes = 24 * SZ_1K;
em->ram_bytes = 24 * SZ_1K;
@@ -442,7 +432,6 @@ static int __test_case_4(struct btrfs_fs_info *fs_info,
em->start = 0;
em->len = SZ_32K;
em->block_start = 0;
- em->block_len = SZ_32K;
em->disk_bytenr = 0;
em->disk_num_bytes = SZ_32K;
em->ram_bytes = SZ_32K;
@@ -462,9 +451,9 @@ static int __test_case_4(struct btrfs_fs_info *fs_info,
}
if (start < em->start || start + len > extent_map_end(em)) {
test_err(
-"case4 [%llu %llu): ret %d, added wrong em (start %llu len %llu block_start %llu block_len %llu)",
+"case4 [%llu %llu): ret %d, added wrong em (start %llu len %llu block_start %llu disk_num_bytes %llu)",
start, start + len, ret, em->start, em->len, em->block_start,
- em->block_len);
+ em->disk_num_bytes);
ret = -EINVAL;
}
free_extent_map(em);
@@ -529,7 +518,6 @@ static int add_compressed_extent(struct btrfs_inode *inode,
em->start = start;
em->len = len;
em->block_start = block_start;
- em->block_len = SZ_4K;
em->disk_bytenr = block_start;
em->disk_num_bytes = SZ_4K;
em->ram_bytes = len;
@@ -753,7 +741,6 @@ static int test_case_6(struct btrfs_fs_info *fs_info, struct btrfs_inode *inode)
em->start = SZ_4K;
em->len = SZ_4K;
em->block_start = SZ_16K;
- em->block_len = SZ_16K;
em->disk_bytenr = SZ_16K;
em->disk_num_bytes = SZ_16K;
em->ram_bytes = SZ_16K;
@@ -809,7 +796,6 @@ static int test_case_7(struct btrfs_fs_info *fs_info, struct btrfs_inode *inode)
em->start = 0;
em->len = SZ_16K;
em->block_start = 0;
- em->block_len = SZ_4K;
em->disk_bytenr = 0;
em->disk_num_bytes = SZ_4K;
em->ram_bytes = SZ_16K;
@@ -834,7 +820,6 @@ static int test_case_7(struct btrfs_fs_info *fs_info, struct btrfs_inode *inode)
em->start = SZ_32K;
em->len = SZ_16K;
em->block_start = SZ_32K;
- em->block_len = SZ_16K;
em->disk_bytenr = SZ_32K;
em->disk_num_bytes = SZ_16K;
em->ram_bytes = SZ_16K;
@@ -4648,7 +4648,7 @@ static int log_extent_csums(struct btrfs_trans_handle *trans,
/* If we're compressed we have to save the entire range of csums. */
if (extent_map_is_compressed(em)) {
csum_offset = 0;
- csum_len = max(em->block_len, em->disk_num_bytes);
+ csum_len = em->disk_num_bytes;
} else {
csum_offset = mod_start - em->start;
csum_len = mod_len;
@@ -4698,7 +4698,7 @@ static int log_one_extent(struct btrfs_trans_handle *trans,
else
btrfs_set_stack_file_extent_type(&fi, BTRFS_FILE_EXTENT_REG);
- block_len = max(em->block_len, em->disk_num_bytes);
+ block_len = em->disk_num_bytes;
compress_type = extent_map_compression(em);
if (compress_type != BTRFS_COMPRESS_NONE) {
btrfs_set_stack_file_extent_disk_bytenr(&fi, em->block_start);
@@ -292,7 +292,6 @@ TRACE_EVENT_CONDITION(btrfs_get_extent,
__field( u64, start )
__field( u64, len )
__field( u64, block_start )
- __field( u64, block_len )
__field( u32, flags )
__field( int, refs )
),
@@ -303,19 +302,17 @@ TRACE_EVENT_CONDITION(btrfs_get_extent,
__entry->start = map->start;
__entry->len = map->len;
__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 "
- "block_start=%llu(%s) block_len=%llu flags=%s refs=%u",
+ "block_start=%llu(%s) flags=%s refs=%u",
show_root_type(__entry->root_objectid),
__entry->ino,
__entry->start,
__entry->len,
show_map_type(__entry->block_start),
- __entry->block_len,
show_map_flags(__entry->flags),
__entry->refs)
);
The extent_map::block_len is either extent_map::len (non-compressed extent) or extent_map::disk_num_bytes (compressed extent). Since we already have sanity checks to do the cross-check between the new and old members, we can drop the old extent_map::block_len now. For most call sites, they can manually select extent_map::len or extent_map::disk_num_bytes, since most if not all of them have checked if the extent is compressed. Signed-off-by: Qu Wenruo <wqu@suse.com> --- fs/btrfs/compression.c | 2 +- fs/btrfs/extent_map.c | 41 +++++++++++-------------------- fs/btrfs/extent_map.h | 9 ------- fs/btrfs/file-item.c | 7 ------ fs/btrfs/file.c | 1 - fs/btrfs/inode.c | 36 +++++++++------------------ fs/btrfs/relocation.c | 1 - fs/btrfs/tests/extent-map-tests.c | 41 ++++++++++--------------------- fs/btrfs/tree-log.c | 4 +-- include/trace/events/btrfs.h | 5 +--- 10 files changed, 42 insertions(+), 105 deletions(-)