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author | Omar Sandoval <osandov@fb.com> | 2019-12-10 10:37:35 -0800 |
---|---|---|
committer | David Sterba <dsterba@suse.com> | 2020-01-20 16:40:54 +0100 |
commit | db72e47f79c5dbd95611edd453328d46c1eae93a (patch) | |
tree | 80df6caf01b72044cc4ef16ce51fe80628a5cd3a | |
parent | e62958fce94b30ef6aab99bb1bc49fde7fac73ea (diff) | |
download | linux-stable-db72e47f79c5dbd95611edd453328d46c1eae93a.tar.gz linux-stable-db72e47f79c5dbd95611edd453328d46c1eae93a.tar.bz2 linux-stable-db72e47f79c5dbd95611edd453328d46c1eae93a.zip |
btrfs: get rid of at_offset parameter to btrfs_lookup_bio_sums()
We can encode this in the offset parameter: -1 means use the page
offsets, anything else is a valid offset.
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
-rw-r--r-- | fs/btrfs/compression.c | 4 | ||||
-rw-r--r-- | fs/btrfs/ctree.h | 2 | ||||
-rw-r--r-- | fs/btrfs/file-item.c | 11 | ||||
-rw-r--r-- | fs/btrfs/inode.c | 6 |
4 files changed, 11 insertions, 12 deletions
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c index b6373de176f8..de95ad27722f 100644 --- a/fs/btrfs/compression.c +++ b/fs/btrfs/compression.c @@ -763,7 +763,7 @@ blk_status_t btrfs_submit_compressed_read(struct inode *inode, struct bio *bio, if (!(BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM)) { ret = btrfs_lookup_bio_sums(inode, comp_bio, - false, 0, sums); + (u64)-1, sums); BUG_ON(ret); /* -ENOMEM */ } @@ -791,7 +791,7 @@ blk_status_t btrfs_submit_compressed_read(struct inode *inode, struct bio *bio, BUG_ON(ret); /* -ENOMEM */ if (!(BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM)) { - ret = btrfs_lookup_bio_sums(inode, comp_bio, false, 0, sums); + ret = btrfs_lookup_bio_sums(inode, comp_bio, (u64)-1, sums); BUG_ON(ret); /* -ENOMEM */ } diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index b1c971cea33a..f895fb490b75 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -2789,7 +2789,7 @@ struct btrfs_dio_private; int btrfs_del_csums(struct btrfs_trans_handle *trans, struct btrfs_root *root, u64 bytenr, u64 len); blk_status_t btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio, - bool at_offset, u64 offset, u8 *dst); + u64 offset, u8 *dst); int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, struct btrfs_root *root, u64 objectid, u64 pos, diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c index b7f5394c37a1..b670014bfc1c 100644 --- a/fs/btrfs/file-item.c +++ b/fs/btrfs/file-item.c @@ -152,17 +152,15 @@ int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, * btrfs_lookup_bio_sums - Look up checksums for a bio. * @inode: inode that the bio is for. * @bio: bio embedded in btrfs_io_bio. - * @at_offset: If true, look up checksums for the extent at @offset. - * If false, use the page offsets from the bio. - * @offset: If @at_offset is true, offset in file to look up checksums for. - * Ignored otherwise. + * @offset: Unless (u64)-1, look up checksums for this offset in the file. + * If (u64)-1, use the page offsets from the bio instead. * @dst: Buffer of size btrfs_super_csum_size() used to return checksum. If * NULL, the checksum is returned in btrfs_io_bio(bio)->csum instead. * * Return: BLK_STS_RESOURCE if allocating memory fails, BLK_STS_OK otherwise. */ blk_status_t btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio, - bool at_offset, u64 offset, u8 *dst) + u64 offset, u8 *dst) { struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct bio_vec bvec; @@ -171,6 +169,7 @@ blk_status_t btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio, struct btrfs_csum_item *item = NULL; struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree; struct btrfs_path *path; + const bool page_offsets = (offset == (u64)-1); u8 *csum; u64 item_start_offset = 0; u64 item_last_offset = 0; @@ -223,7 +222,7 @@ blk_status_t btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio, if (count) goto next; - if (!at_offset) + if (page_offsets) offset = page_offset(bvec.bv_page) + bvec.bv_offset; count = btrfs_find_ordered_sum(inode, offset, disk_bytenr, csum, nblocks); diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 43858122b36e..4d1b3e8449d1 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -2127,7 +2127,7 @@ static blk_status_t btrfs_submit_bio_hook(struct inode *inode, struct bio *bio, bio_flags); goto out; } else if (!skip_sum) { - ret = btrfs_lookup_bio_sums(inode, bio, false, 0, NULL); + ret = btrfs_lookup_bio_sums(inode, bio, (u64)-1, NULL); if (ret) goto out; } @@ -8387,8 +8387,8 @@ static inline blk_status_t btrfs_lookup_and_bind_dio_csum(struct inode *inode, * contention. */ if (dip->logical_offset == file_offset) { - ret = btrfs_lookup_bio_sums(inode, dip->orig_bio, true, - file_offset, NULL); + ret = btrfs_lookup_bio_sums(inode, dip->orig_bio, file_offset, + NULL); if (ret) return ret; } |