From: David Sterba Date: Tue, 30 Jun 2020 00:01:31 +0000 (+0200) Subject: btrfs: use cached value of fs_info::csum_size everywhere X-Git-Tag: v5.15~1812^2~170 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=55fc29bed8ddb4c3848ecf8cf7133e34c946f223;p=platform%2Fkernel%2Flinux-starfive.git 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 Reviewed-by: Qu Wenruo Signed-off-by: David Sterba --- diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h index 16c50a4..a31b7e3 100644 --- a/fs/btrfs/btrfs_inode.h +++ b/fs/btrfs/btrfs_inode.h @@ -331,8 +331,7 @@ static inline void btrfs_print_data_csum_error(struct btrfs_inode *inode, u64 logical_start, u8 *csum, u8 *csum_expected, int mirror_num) { struct btrfs_root *root = inode->root; - struct btrfs_super_block *sb = root->fs_info->super_copy; - const u16 csum_size = btrfs_super_csum_size(sb); + const u16 csum_size = root->fs_info->csum_size; /* Output minus objectid, which is more meaningful */ if (root->root_key.objectid >= BTRFS_LAST_FREE_OBJECTID) diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c index 106874c..288fd4b 100644 --- a/fs/btrfs/check-integrity.c +++ b/fs/btrfs/check-integrity.c @@ -660,7 +660,7 @@ static int btrfsic_process_superblock(struct btrfsic_state *state, return -1; } - state->csum_size = btrfs_super_csum_size(selected_super); + state->csum_size = state->fs_info->csum_size; for (pass = 0; pass < 3; pass++) { int num_copies; diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c index 972fb68..00bbd85 100644 --- a/fs/btrfs/compression.c +++ b/fs/btrfs/compression.c @@ -131,7 +131,7 @@ static int btrfs_decompress_bio(struct compressed_bio *cb); static inline int compressed_bio_size(struct btrfs_fs_info *fs_info, unsigned long disk_size) { - u16 csum_size = btrfs_super_csum_size(fs_info->super_copy); + const u16 csum_size = fs_info->csum_size; return sizeof(struct compressed_bio) + (DIV_ROUND_UP(disk_size, fs_info->sectorsize)) * csum_size; @@ -142,7 +142,7 @@ static int check_compressed_csum(struct btrfs_inode *inode, struct bio *bio, { struct btrfs_fs_info *fs_info = inode->root->fs_info; SHASH_DESC_ON_STACK(shash, fs_info->csum_shash); - const u16 csum_size = btrfs_super_csum_size(fs_info->super_copy); + const u16 csum_size = fs_info->csum_size; struct page *page; unsigned long i; char *kaddr; @@ -628,7 +628,7 @@ blk_status_t btrfs_submit_compressed_read(struct inode *inode, struct bio *bio, struct extent_map *em; blk_status_t ret = BLK_STS_RESOURCE; int faili = 0; - const u16 csum_size = btrfs_super_csum_size(fs_info->super_copy); + const u16 csum_size = fs_info->csum_size; u8 *sums; em_tree = &BTRFS_I(inode)->extent_tree; diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 0e540dd..95ebe7c 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -321,7 +321,7 @@ static int btrfs_check_super_csum(struct btrfs_fs_info *fs_info, crypto_shash_digest(shash, raw_disk_sb + BTRFS_CSUM_SIZE, BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE, result); - if (memcmp(disk_sb->csum, result, btrfs_super_csum_size(disk_sb))) + if (memcmp(disk_sb->csum, result, fs_info->csum_size)) return 1; return 0; @@ -454,7 +454,7 @@ static int csum_dirty_buffer(struct btrfs_fs_info *fs_info, struct page *page) u64 start = page_offset(page); u64 found_start; u8 result[BTRFS_CSUM_SIZE]; - u16 csum_size = btrfs_super_csum_size(fs_info->super_copy); + const u16 csum_size = fs_info->csum_size; struct extent_buffer *eb; int ret; @@ -543,7 +543,7 @@ int btrfs_validate_metadata_buffer(struct btrfs_io_bio *io_bio, u64 phy_offset, eb = (struct extent_buffer *)page->private; fs_info = eb->fs_info; - csum_size = btrfs_super_csum_size(fs_info->super_copy); + csum_size = fs_info->csum_size; /* the pending IO might have been the only thing that kept this buffer * in memory. Make sure we have a ref for all this other checks diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 1eeba31..d699f5d 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -2689,7 +2689,7 @@ blk_status_t btrfs_submit_read_repair(struct inode *inode, repair_bio->bi_private = failed_bio->bi_private; if (failed_io_bio->csum) { - const u16 csum_size = btrfs_super_csum_size(fs_info->super_copy); + const u16 csum_size = fs_info->csum_size; repair_io_bio->csum = repair_io_bio->csum_inline; memcpy(repair_io_bio->csum, diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c index 5d79b1f..90e6738 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; - u16 csum_size = btrfs_super_csum_size(fs_info->super_copy); + const u16 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; - u16 csum_size = btrfs_super_csum_size(fs_info->super_copy); + const u16 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; - u16 csum_size = btrfs_super_csum_size(fs_info->super_copy); + const u16 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 = btrfs_super_csum_size(fs_info->super_copy); + const u16 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; - u16 csum_size = btrfs_super_csum_size(fs_info->super_copy); + const u16 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; - u16 csum_size = btrfs_super_csum_size(fs_info->super_copy); + const u16 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; - u16 csum_size = btrfs_super_csum_size(fs_info->super_copy); + const u16 csum_size = fs_info->csum_size; path = btrfs_alloc_path(); if (!path) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 0b0c751..358d900 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; diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c index 78c1f28..6a63fb1 100644 --- a/fs/btrfs/ordered-data.c +++ b/fs/btrfs/ordered-data.c @@ -868,7 +868,7 @@ 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 u16 csum_size = btrfs_super_csum_size(fs_info->super_copy); + const u16 csum_size = fs_info->csum_size; int index = 0; ordered = btrfs_lookup_ordered_extent(inode, offset); diff --git a/fs/btrfs/ordered-data.h b/fs/btrfs/ordered-data.h index c3a2325..4662fd8 100644 --- a/fs/btrfs/ordered-data.h +++ b/fs/btrfs/ordered-data.h @@ -137,7 +137,7 @@ static inline int btrfs_ordered_sum_size(struct btrfs_fs_info *fs_info, unsigned long bytes) { int num_sectors = (int)DIV_ROUND_UP(bytes, fs_info->sectorsize); - int csum_size = btrfs_super_csum_size(fs_info->super_copy); + const u16 csum_size = fs_info->csum_size; return sizeof(struct btrfs_ordered_sum) + num_sectors * csum_size; } diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index c307f25..5122253 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -610,7 +610,7 @@ static noinline_for_stack struct scrub_ctx *scrub_setup_ctx( atomic_set(&sctx->bios_in_flight, 0); atomic_set(&sctx->workers_pending, 0); atomic_set(&sctx->cancel_req, 0); - sctx->csum_size = btrfs_super_csum_size(fs_info->super_copy); + sctx->csum_size = fs_info->csum_size; spin_lock_init(&sctx->list_lock); spin_lock_init(&sctx->stat_lock); diff --git a/fs/btrfs/tree-checker.c b/fs/btrfs/tree-checker.c index cb9041d..1fe5961 100644 --- a/fs/btrfs/tree-checker.c +++ b/fs/btrfs/tree-checker.c @@ -336,7 +336,7 @@ static int check_csum_item(struct extent_buffer *leaf, struct btrfs_key *key, { struct btrfs_fs_info *fs_info = leaf->fs_info; u32 sectorsize = fs_info->sectorsize; - u32 csumsize = btrfs_super_csum_size(fs_info->super_copy); + const u16 csumsize = fs_info->csum_size; if (key->objectid != BTRFS_EXTENT_CSUM_OBJECTID) { generic_err(leaf, slot,