diff options
| author | David Sterba <dsterba@suse.com> | 2020-06-30 02:01:31 +0200 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2020-12-08 15:53:59 +0100 |
| commit | 55fc29bed8ddb4c3848ecf8cf7133e34c946f223 (patch) | |
| tree | c7174086f876963be22ca15e63e05560378d4518 /fs/btrfs/inode.c | |
| parent | fe5ecbe818de38774895305e1f2d48972f1b745f (diff) | |
btrfs: use cached value of fs_info::csum_size everywhere
btrfs_get_16 shows up in the system performance profiles (helper to read
16bit values from on-disk structures). This is partially because of the
checksum size that's frequently read along with data reads/writes, other
u16 uses are from item size or directory entries.
Replace all calls to btrfs_super_csum_size by the cached value from
fs_info.
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/inode.c')
| -rw-r--r-- | fs/btrfs/inode.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 0b0c751dac85..358d900d0cf5 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -2906,7 +2906,7 @@ static int check_data_csum(struct inode *inode, struct btrfs_io_bio *io_bio, SHASH_DESC_ON_STACK(shash, fs_info->csum_shash); char *kaddr; u32 len = fs_info->sectorsize; - u16 csum_size = btrfs_super_csum_size(fs_info->super_copy); + const u16 csum_size = fs_info->csum_size; u8 *csum_expected; u8 csum[BTRFS_CSUM_SIZE]; @@ -7825,7 +7825,7 @@ static inline blk_status_t btrfs_submit_dio_bio(struct bio *bio, csum_offset = file_offset - dip->logical_offset; csum_offset >>= fs_info->sectorsize_bits; - csum_offset *= btrfs_super_csum_size(fs_info->super_copy); + csum_offset *= fs_info->csum_size; btrfs_io_bio(bio)->csum = dip->csums + csum_offset; } map: @@ -7850,7 +7850,7 @@ static struct btrfs_dio_private *btrfs_create_dio_private(struct bio *dio_bio, dip_size = sizeof(*dip); if (!write && csum) { struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); - const u16 csum_size = btrfs_super_csum_size(fs_info->super_copy); + const u16 csum_size = fs_info->csum_size; size_t nblocks; nblocks = dio_bio->bi_iter.bi_size >> fs_info->sectorsize_bits; |