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btrfs: replace s_blocksize_bits with fs_info::sectorsize_bits

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The value of super_block::s_blocksize_bits is the same as
fs_info::sectorsize_bits, but we don't need to do the extra dereferences
in many functions and storing the bits as u32 (in fs_info) generates
shorter assembly.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2020-07-01 21:19:09 +02:00
parent 098e63082b
commit 265fdfa6ce
7 changed files with 25 additions and 30 deletions
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2
fs/btrfs/ctree.h
View File

@ -1410,7 +1410,7 @@ struct btrfs_map_token {
};
#define BTRFS_BYTES_TO_BLKS(fs_info, bytes) \
((bytes) >> (fs_info)->sb->s_blocksize_bits)
((bytes) >> (fs_info)->sectorsize_bits)
static inline void btrfs_init_map_token(struct btrfs_map_token *token,
struct extent_buffer *eb)

2
fs/btrfs/extent_io.c
View File

@ -2656,7 +2656,7 @@ blk_status_t btrfs_submit_read_repair(struct inode *inode,
struct extent_io_tree *tree = &BTRFS_I(inode)->io_tree;
struct extent_io_tree *failure_tree = &BTRFS_I(inode)->io_failure_tree;
struct btrfs_io_bio *failed_io_bio = btrfs_io_bio(failed_bio);
const int icsum = phy_offset >> inode->i_sb->s_blocksize_bits;
const int icsum = phy_offset >> fs_info->sectorsize_bits;
bool need_validation;
struct bio *repair_bio;
struct btrfs_io_bio *repair_io_bio;

34
fs/btrfs/file-item.c
View File

@ -201,7 +201,7 @@ btrfs_lookup_csum(struct btrfs_trans_handle *trans,
goto fail;
csum_offset = (bytenr - found_key.offset) >>
fs_info->sb->s_blocksize_bits;
fs_info->sectorsize_bits;
csums_in_item = btrfs_item_size_nr(leaf, path->slots[0]);
csums_in_item /= csum_size;
@ -279,7 +279,7 @@ blk_status_t btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio,
if (!path)
return BLK_STS_RESOURCE;
nblocks = bio->bi_iter.bi_size >> inode->i_sb->s_blocksize_bits;
nblocks = bio->bi_iter.bi_size >> fs_info->sectorsize_bits;
if (!dst) {
struct btrfs_io_bio *btrfs_bio = btrfs_io_bio(bio);
@ -372,7 +372,7 @@ blk_status_t btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio,
diff = diff >> fs_info->sectorsize_bits;
diff = diff * csum_size;
count = min_t(int, nblocks, (item_last_offset - disk_bytenr) >>
inode->i_sb->s_blocksize_bits);
fs_info->sectorsize_bits);
read_extent_buffer(path->nodes[0], csum,
((unsigned long)item) + diff,
csum_size * count);
@ -436,8 +436,7 @@ int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end,
btrfs_item_key_to_cpu(leaf, &key, path->slots[0] - 1);
if (key.objectid == BTRFS_EXTENT_CSUM_OBJECTID &&
key.type == BTRFS_EXTENT_CSUM_KEY) {
offset = (start - key.offset) >>
fs_info->sb->s_blocksize_bits;
offset = (start - key.offset) >> fs_info->sectorsize_bits;
if (offset * csum_size <
btrfs_item_size_nr(leaf, path->slots[0] - 1))
path->slots[0]--;
@ -487,10 +486,9 @@ int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end,
sums->bytenr = start;
sums->len = (int)size;
offset = (start - key.offset) >>
fs_info->sb->s_blocksize_bits;
offset = (start - key.offset) >> fs_info->sectorsize_bits;
offset *= csum_size;
size >>= fs_info->sb->s_blocksize_bits;
size >>= fs_info->sectorsize_bits;
read_extent_buffer(path->nodes[0],
sums->sums,
@ -643,11 +641,11 @@ static noinline void truncate_one_csum(struct btrfs_fs_info *fs_info,
u16 csum_size = btrfs_super_csum_size(fs_info->super_copy);
u64 csum_end;
u64 end_byte = bytenr + len;
u32 blocksize_bits = fs_info->sb->s_blocksize_bits;
u32 blocksize_bits = fs_info->sectorsize_bits;
leaf = path->nodes[0];
csum_end = btrfs_item_size_nr(leaf, path->slots[0]) / csum_size;
csum_end <<= fs_info->sb->s_blocksize_bits;
csum_end <<= blocksize_bits;
csum_end += key->offset;
if (key->offset < bytenr && csum_end <= end_byte) {
@ -695,7 +693,7 @@ int btrfs_del_csums(struct btrfs_trans_handle *trans,
struct extent_buffer *leaf;
int ret;
u16 csum_size = btrfs_super_csum_size(fs_info->super_copy);
int blocksize_bits = fs_info->sb->s_blocksize_bits;
u32 blocksize_bits = fs_info->sectorsize_bits;
ASSERT(root == fs_info->csum_root ||
root->root_key.objectid == BTRFS_TREE_LOG_OBJECTID);
@ -924,7 +922,7 @@ again:
if (btrfs_leaf_free_space(leaf) >= csum_size) {
btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]);
csum_offset = (bytenr - found_key.offset) >>
fs_info->sb->s_blocksize_bits;
fs_info->sectorsize_bits;
goto extend_csum;
}
@ -942,8 +940,7 @@ again:
leaf = path->nodes[0];
btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]);
csum_offset = (bytenr - found_key.offset) >>
fs_info->sb->s_blocksize_bits;
csum_offset = (bytenr - found_key.offset) >> fs_info->sectorsize_bits;
if (found_key.type != BTRFS_EXTENT_CSUM_KEY ||
found_key.objectid != BTRFS_EXTENT_CSUM_OBJECTID ||
@ -959,7 +956,7 @@ extend_csum:
u32 diff;
tmp = sums->len - total_bytes;
tmp >>= fs_info->sb->s_blocksize_bits;
tmp >>= fs_info->sectorsize_bits;
WARN_ON(tmp < 1);
extend_nr = max_t(int, 1, (int)tmp);
@ -984,9 +981,9 @@ insert:
u64 tmp;
tmp = sums->len - total_bytes;
tmp >>= fs_info->sb->s_blocksize_bits;
tmp >>= fs_info->sectorsize_bits;
tmp = min(tmp, (next_offset - file_key.offset) >>
fs_info->sb->s_blocksize_bits);
fs_info->sectorsize_bits);
tmp = max_t(u64, 1, tmp);
tmp = min_t(u64, tmp, MAX_CSUM_ITEMS(fs_info, csum_size));
@ -1010,8 +1007,7 @@ csum:
item = (struct btrfs_csum_item *)((unsigned char *)item +
csum_offset * csum_size);
found:
ins_size = (u32)(sums->len - total_bytes) >>
fs_info->sb->s_blocksize_bits;
ins_size = (u32)(sums->len - total_bytes) >> fs_info->sectorsize_bits;
ins_size *= csum_size;
ins_size = min_t(u32, (unsigned long)item_end - (unsigned long)item,
ins_size);

3
fs/btrfs/file.c
View File

@ -1799,8 +1799,7 @@ again:
if (num_sectors > dirty_sectors) {
/* release everything except the sectors we dirtied */
release_bytes -= dirty_sectors <<
fs_info->sb->s_blocksize_bits;
release_bytes -= dirty_sectors << fs_info->sectorsize_bits;
if (only_release_metadata) {
btrfs_delalloc_release_metadata(BTRFS_I(inode),
release_bytes, true);

6
fs/btrfs/inode.c
View File

@ -2966,7 +2966,7 @@ int btrfs_verify_data_csum(struct btrfs_io_bio *io_bio, u64 phy_offset,
return 0;
}
phy_offset >>= inode->i_sb->s_blocksize_bits;
phy_offset >>= root->fs_info->sectorsize_bits;
return check_data_csum(inode, io_bio, phy_offset, page, offset);
}
@ -7824,7 +7824,7 @@ static inline blk_status_t btrfs_submit_dio_bio(struct bio *bio,
u64 csum_offset;
csum_offset = file_offset - dip->logical_offset;
csum_offset >>= inode->i_sb->s_blocksize_bits;
csum_offset >>= fs_info->sectorsize_bits;
csum_offset *= btrfs_super_csum_size(fs_info->super_copy);
btrfs_io_bio(bio)->csum = dip->csums + csum_offset;
}
@ -7853,7 +7853,7 @@ static struct btrfs_dio_private *btrfs_create_dio_private(struct bio *dio_bio,
const u16 csum_size = btrfs_super_csum_size(fs_info->super_copy);
size_t nblocks;
nblocks = dio_bio->bi_iter.bi_size >> inode->i_sb->s_blocksize_bits;
nblocks = dio_bio->bi_iter.bi_size >> fs_info->sectorsize_bits;
dip_size += csum_size * nblocks;
}

6
fs/btrfs/ordered-data.c
View File

@ -868,7 +868,6 @@ int btrfs_find_ordered_sum(struct btrfs_inode *inode, u64 offset,
struct btrfs_ordered_inode_tree *tree = &inode->ordered_tree;
unsigned long num_sectors;
unsigned long i;
const u8 blocksize_bits = inode->vfs_inode.i_sb->s_blocksize_bits;
const u16 csum_size = btrfs_super_csum_size(fs_info->super_copy);
int index = 0;
@ -880,8 +879,9 @@ int btrfs_find_ordered_sum(struct btrfs_inode *inode, u64 offset,
list_for_each_entry_reverse(ordered_sum, &ordered->list, list) {
if (disk_bytenr >= ordered_sum->bytenr &&
disk_bytenr < ordered_sum->bytenr + ordered_sum->len) {
i = (disk_bytenr - ordered_sum->bytenr) >> blocksize_bits;
num_sectors = ordered_sum->len >> blocksize_bits;
i = (disk_bytenr - ordered_sum->bytenr) >>
fs_info->sectorsize_bits;
num_sectors = ordered_sum->len >> fs_info->sectorsize_bits;
num_sectors = min_t(int, len - index, num_sectors - i);
memcpy(sum + index, ordered_sum->sums + i * csum_size,
num_sectors * csum_size);

2
fs/btrfs/super.c
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@ -2205,7 +2205,7 @@ static int btrfs_statfs(struct dentry *dentry, struct kstatfs *buf)
u64 total_used = 0;
u64 total_free_data = 0;
u64 total_free_meta = 0;
int bits = dentry->d_sb->s_blocksize_bits;
u32 bits = fs_info->sectorsize_bits;
__be32 *fsid = (__be32 *)fs_info->fs_devices->fsid;
unsigned factor = 1;
struct btrfs_block_rsv *block_rsv = &fs_info->global_block_rsv;