summaryrefslogtreecommitdiff
path: root/fs/btrfs/file-item.c
diff options
context:
space:
mode:
authorDavid Sterba <dsterba@suse.com>2020-07-02 12:27:30 +0300
committerDavid Sterba <dsterba@suse.com>2020-12-08 17:53:59 +0300
commit223486c27b369a10ceb6180c40d7aa354e903446 (patch)
tree26f5d18a30be1e251900158f0af6e65611f56369 /fs/btrfs/file-item.c
parent55fc29bed8ddb4c3848ecf8cf7133e34c946f223 (diff)
downloadlinux-223486c27b369a10ceb6180c40d7aa354e903446.tar.xz
btrfs: switch cached fs_info::csum_size from u16 to u32
The fs_info value is 32bit, switch also the local u16 variables. This leads to a better assembly code generated due to movzwl. This simple change will shave some bytes on x86_64 and release config: text data bss dec hex filename 1090000 17980 14912 1122892 11224c pre/btrfs.ko 1089794 17980 14912 1122686 11217e post/btrfs.ko DELTA: -206 Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/file-item.c')
-rw-r--r--fs/btrfs/file-item.c14
1 files changed, 7 insertions, 7 deletions
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index 90e673847b47..73ec6c5eadcb 100644
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -181,7 +181,7 @@ btrfs_lookup_csum(struct btrfs_trans_handle *trans,
struct btrfs_csum_item *item;
struct extent_buffer *leaf;
u64 csum_offset = 0;
- const u16 csum_size = fs_info->csum_size;
+ const u32 csum_size = fs_info->csum_size;
int csums_in_item;
file_key.objectid = BTRFS_EXTENT_CSUM_OBJECTID;
@@ -270,7 +270,7 @@ blk_status_t btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio,
u32 diff;
int nblocks;
int count = 0;
- const u16 csum_size = fs_info->csum_size;
+ const u32 csum_size = fs_info->csum_size;
if (!fs_info->csum_root || (BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM))
return BLK_STS_OK;
@@ -409,7 +409,7 @@ int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end,
int ret;
size_t size;
u64 csum_end;
- const u16 csum_size = fs_info->csum_size;
+ const u32 csum_size = fs_info->csum_size;
ASSERT(IS_ALIGNED(start, fs_info->sectorsize) &&
IS_ALIGNED(end + 1, fs_info->sectorsize));
@@ -540,7 +540,7 @@ blk_status_t btrfs_csum_one_bio(struct btrfs_inode *inode, struct bio *bio,
int i;
u64 offset;
unsigned nofs_flag;
- const u16 csum_size = fs_info->csum_size;
+ const u32 csum_size = fs_info->csum_size;
nofs_flag = memalloc_nofs_save();
sums = kvzalloc(btrfs_ordered_sum_size(fs_info, bio->bi_iter.bi_size),
@@ -638,7 +638,7 @@ static noinline void truncate_one_csum(struct btrfs_fs_info *fs_info,
u64 bytenr, u64 len)
{
struct extent_buffer *leaf;
- const u16 csum_size = fs_info->csum_size;
+ const u32 csum_size = fs_info->csum_size;
u64 csum_end;
u64 end_byte = bytenr + len;
u32 blocksize_bits = fs_info->sectorsize_bits;
@@ -692,7 +692,7 @@ int btrfs_del_csums(struct btrfs_trans_handle *trans,
u64 csum_end;
struct extent_buffer *leaf;
int ret;
- const u16 csum_size = fs_info->csum_size;
+ const u32 csum_size = fs_info->csum_size;
u32 blocksize_bits = fs_info->sectorsize_bits;
ASSERT(root == fs_info->csum_root ||
@@ -847,7 +847,7 @@ int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans,
int index = 0;
int found_next;
int ret;
- const u16 csum_size = fs_info->csum_size;
+ const u32 csum_size = fs_info->csum_size;
path = btrfs_alloc_path();
if (!path)