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btrfs: remove the start argument to check_data_csum and export

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Derive the value of start from the btrfs_bio now that ->file_offset is
always valid.  Also export and rename the function so it's available
outside of inode.c as we'll need that soon.

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Boris Burkov <boris@bur.io>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Christoph Hellwig 2022-07-07 07:33:29 +02:00 committed by David Sterba
parent 7aa51232e2
commit 7959bd4411
2 changed files with 13 additions and 15 deletions
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2
fs/btrfs/ctree.h
View file

@ -3296,6 +3296,8 @@ int btrfs_check_sector_csum(struct btrfs_fs_info *fs_info, struct page *page,
unsigned int btrfs_verify_data_csum(struct btrfs_bio *bbio,
u32 bio_offset, struct page *page,
u64 start, u64 end);
int btrfs_check_data_csum(struct inode *inode, struct btrfs_bio *bbio,
u32 bio_offset, struct page *page, u32 pgoff);
struct extent_map *btrfs_get_extent_fiemap(struct btrfs_inode *inode,
u64 start, u64 len);
noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len,

26
fs/btrfs/inode.c
View file

@ -3440,20 +3440,18 @@ int btrfs_check_sector_csum(struct btrfs_fs_info *fs_info, struct page *page,
/*
* check_data_csum - verify checksum of one sector of uncompressed data
* @inode: inode
* @io_bio: btrfs_io_bio which contains the csum
* @bbio: btrfs_bio which contains the csum
* @bio_offset: offset to the beginning of the bio (in bytes)
* @page: page where is the data to be verified
* @pgoff: offset inside the page
* @start: logical offset in the file
*
* The length of such check is always one sector size.
*
* When csum mismatch is detected, we will also report the error and fill the
* corrupted range with zero. (Thus it needs the extra parameters)
*/
static int check_data_csum(struct inode *inode, struct btrfs_bio *bbio,
u32 bio_offset, struct page *page, u32 pgoff,
u64 start)
int btrfs_check_data_csum(struct inode *inode, struct btrfs_bio *bbio,
u32 bio_offset, struct page *page, u32 pgoff)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
u32 len = fs_info->sectorsize;
@ -3469,8 +3467,9 @@ static int check_data_csum(struct inode *inode, struct btrfs_bio *bbio,
return 0;
zeroit:
btrfs_print_data_csum_error(BTRFS_I(inode), start, csum, csum_expected,
bbio->mirror_num);
btrfs_print_data_csum_error(BTRFS_I(inode),
bbio->file_offset + bio_offset,
csum, csum_expected, bbio->mirror_num);
if (bbio->device)
btrfs_dev_stat_inc_and_print(bbio->device,
BTRFS_DEV_STAT_CORRUPTION_ERRS);
@ -3539,8 +3538,7 @@ unsigned int btrfs_verify_data_csum(struct btrfs_bio *bbio,
EXTENT_NODATASUM);
continue;
}
ret = check_data_csum(inode, bbio, bio_offset, page, pg_off,
page_offset(page) + pg_off);
ret = btrfs_check_data_csum(inode, bbio, bio_offset, page, pg_off);
if (ret < 0) {
const int nr_bit = (pg_off - offset_in_page(start)) >>
root->fs_info->sectorsize_bits;
@ -8004,8 +8002,8 @@ static blk_status_t btrfs_check_read_dio_bio(struct btrfs_dio_private *dip,
u64 start = bbio->file_offset + offset;
if (uptodate &&
(!csum || !check_data_csum(inode, bbio, offset, bv.bv_page,
bv.bv_offset, start))) {
(!csum || !btrfs_check_data_csum(inode, bbio, offset, bv.bv_page,
bv.bv_offset))) {
clean_io_failure(fs_info, failure_tree, io_tree, start,
bv.bv_page, btrfs_ino(BTRFS_I(inode)),
bv.bv_offset);
@ -10387,7 +10385,6 @@ static blk_status_t btrfs_encoded_read_verify_csum(struct btrfs_bio *bbio)
u32 sectorsize = fs_info->sectorsize;
struct bio_vec *bvec;
struct bvec_iter_all iter_all;
u64 start = priv->file_offset;
u32 bio_offset = 0;
if (priv->skip_csum || !uptodate)
@ -10400,10 +10397,9 @@ static blk_status_t btrfs_encoded_read_verify_csum(struct btrfs_bio *bbio)
pgoff = bvec->bv_offset;
for (i = 0; i < nr_sectors; i++) {
ASSERT(pgoff < PAGE_SIZE);
if (check_data_csum(&inode->vfs_inode, bbio, bio_offset,
bvec->bv_page, pgoff, start))
if (btrfs_check_data_csum(&inode->vfs_inode, bbio, bio_offset,
bvec->bv_page, pgoff))
return BLK_STS_IOERR;
start += sectorsize;
bio_offset += sectorsize;
pgoff += sectorsize;
}