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btrfs: do not return errors from btrfs_submit_compressed_read 

btrfs_submit_compressed_read already calls ->bi_end_io on error and
the caller must ignore the return value, so remove it.

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
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 2022-04-15 16:33:27 +02:00 committed by David Sterba
parent 94d9e11b27
commit cb4411dd57
3 changed files with 10 additions and 13 deletions
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11
fs/btrfs/compression.c
View File

@ -801,8 +801,8 @@ static noinline int add_ra_bio_pages(struct inode *inode,
* After the compressed pages are read, we copy the bytes into the
* bio we were passed and then call the bio end_io calls
*/
blk_status_t btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
int mirror_num, unsigned long bio_flags)
void btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
int mirror_num, unsigned long bio_flags)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
struct extent_map_tree *em_tree;
@ -947,7 +947,7 @@ blk_status_t btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
comp_bio = NULL;
}
}
return BLK_STS_OK;
return;
fail:
if (cb->compressed_pages) {
@ -963,7 +963,7 @@ out:
free_extent_map(em);
bio->bi_status = ret;
bio_endio(bio);
return ret;
return;
finish_cb:
if (comp_bio) {
comp_bio->bi_status = ret;
@ -971,7 +971,7 @@ finish_cb:
}
/* All bytes of @cb is submitted, endio will free @cb */
if (cur_disk_byte == disk_bytenr + compressed_len)
return ret;
return;
wait_var_event(cb, refcount_read(&cb->pending_sectors) ==
(disk_bytenr + compressed_len - cur_disk_byte) >>
@ -983,7 +983,6 @@ finish_cb:
ASSERT(refcount_read(&cb->pending_sectors));
/* Now we are the only one referring @cb, can finish it safely. */
finish_compressed_bio_read(cb);
return ret;
}
/*

4
fs/btrfs/compression.h
View File

@ -102,8 +102,8 @@ blk_status_t btrfs_submit_compressed_write(struct btrfs_inode *inode, u64 start,
unsigned int write_flags,
struct cgroup_subsys_state *blkcg_css,
bool writeback);
blk_status_t btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
int mirror_num, unsigned long bio_flags);
void btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
int mirror_num, unsigned long bio_flags);
unsigned int btrfs_compress_str2level(unsigned int type, const char *str);

8
fs/btrfs/inode.c
View File

@ -2607,10 +2607,9 @@ blk_status_t btrfs_submit_data_bio(struct inode *inode, struct bio *bio,
* the bio if there were any errors, so just return
* here.
*/
ret = btrfs_submit_compressed_read(inode, bio,
mirror_num,
bio_flags);
goto out_no_endio;
btrfs_submit_compressed_read(inode, bio, mirror_num,
bio_flags);
return BLK_STS_OK;
} else {
/*
* Lookup bio sums does extra checks around whether we
@ -2644,7 +2643,6 @@ out:
bio->bi_status = ret;
bio_endio(bio);
}
out_no_endio:
return ret;
}