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btrfs: change how submit bio callback is passed to btrfs_wq_submit_bio 

There's a callback function parameter for btrfs_wq_submit_bio that can
be one of: metadata, buffered data, direct io data. The callback
abstraction is unnecessary as we have all functions available.

Replace the parameter with a command that leads to a direct call in
run_one_async_start. The called functions can be then simplified and we
can also remove the extent_submit_bio_start_t typedef.

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2022-10-27 02:22:19 +02:00
parent 7920b773bd
commit ab2072b292
5 changed files with 45 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
fs/btrfs/btrfs_inode.h
View File

@ -415,6 +415,11 @@ void btrfs_submit_data_write_bio(struct inode *inode, struct bio *bio, int mirro
void btrfs_submit_data_read_bio(struct inode *inode, struct bio *bio,
int mirror_num, enum btrfs_compression_type compress_type);
void btrfs_submit_dio_repair_bio(struct inode *inode, struct bio *bio, int mirror_num);
blk_status_t btrfs_submit_bio_start(struct inode *inode, struct bio *bio,
u64 dio_file_offset);
blk_status_t btrfs_submit_bio_start_direct_io(struct inode *inode,
struct bio *bio,
u64 dio_file_offset);
int btrfs_check_sector_csum(struct btrfs_fs_info *fs_info, struct page *page,
u32 pgoff, u8 *csum, const u8 * const csum_expected);
int btrfs_check_data_csum(struct inode *inode, struct btrfs_bio *bbio,

33
fs/btrfs/disk-io.c
View File

@ -86,10 +86,10 @@ static void btrfs_free_csum_hash(struct btrfs_fs_info *fs_info)
struct async_submit_bio {
struct inode *inode;
struct bio *bio;
extent_submit_bio_start_t *submit_bio_start;
enum btrfs_wq_submit_cmd submit_cmd;
int mirror_num;
/* Optional parameter for submit_bio_start used by direct io */
/* Optional parameter for used by direct io */
u64 dio_file_offset;
struct btrfs_work work;
blk_status_t status;
@ -637,8 +637,22 @@ static void run_one_async_start(struct btrfs_work *work)
blk_status_t ret;
async = container_of(work, struct async_submit_bio, work);
ret = async->submit_bio_start(async->inode, async->bio,
async->dio_file_offset);
switch (async->submit_cmd) {
case WQ_SUBMIT_METADATA:
ret = btree_submit_bio_start(async->inode, async->bio,
async->dio_file_offset);
break;
case WQ_SUBMIT_DATA:
ret = btrfs_submit_bio_start(async->inode, async->bio,
async->dio_file_offset);
break;
case WQ_SUBMIT_DATA_DIO:
ret = btrfs_submit_bio_start_direct_io(async->inode, async->bio,
async->dio_file_offset);
break;
}
if (ret)
async->status = ret;
}
@ -689,8 +703,7 @@ static void run_one_async_free(struct btrfs_work *work)
* - false in case of error
*/
bool btrfs_wq_submit_bio(struct inode *inode, struct bio *bio, int mirror_num,
u64 dio_file_offset,
extent_submit_bio_start_t *submit_bio_start)
u64 dio_file_offset, enum btrfs_wq_submit_cmd cmd)
{
struct btrfs_fs_info *fs_info = BTRFS_I(inode)->root->fs_info;
struct async_submit_bio *async;
@ -702,7 +715,7 @@ bool btrfs_wq_submit_bio(struct inode *inode, struct bio *bio, int mirror_num,
async->inode = inode;
async->bio = bio;
async->mirror_num = mirror_num;
async->submit_bio_start = submit_bio_start;
async->submit_cmd = cmd;
btrfs_init_work(&async->work, run_one_async_start, run_one_async_done,
run_one_async_free);
@ -736,8 +749,8 @@ static blk_status_t btree_csum_one_bio(struct bio *bio)
return errno_to_blk_status(ret);
}
static blk_status_t btree_submit_bio_start(struct inode *inode, struct bio *bio,
u64 dio_file_offset)
blk_status_t btree_submit_bio_start(struct inode *inode, struct bio *bio,
u64 dio_file_offset)
{
/*
* when we're called for a write, we're already in the async
@ -776,7 +789,7 @@ void btrfs_submit_metadata_bio(struct inode *inode, struct bio *bio, int mirror_
* happen in parallel across all CPUs.
*/
if (should_async_write(fs_info, BTRFS_I(inode)) &&
btrfs_wq_submit_bio(inode, bio, mirror_num, 0, btree_submit_bio_start))
btrfs_wq_submit_bio(inode, bio, mirror_num, 0, WQ_SUBMIT_METADATA))
return;
ret = btree_csum_one_bio(bio);

12
fs/btrfs/disk-io.h
View File

@ -113,9 +113,17 @@ int btrfs_buffer_uptodate(struct extent_buffer *buf, u64 parent_transid,
int atomic);
int btrfs_read_extent_buffer(struct extent_buffer *buf, u64 parent_transid,
int level, struct btrfs_key *first_key);
enum btrfs_wq_submit_cmd {
WQ_SUBMIT_METADATA,
WQ_SUBMIT_DATA,
WQ_SUBMIT_DATA_DIO,
};
bool btrfs_wq_submit_bio(struct inode *inode, struct bio *bio, int mirror_num,
u64 dio_file_offset,
extent_submit_bio_start_t *submit_bio_start);
u64 dio_file_offset, enum btrfs_wq_submit_cmd cmd);
blk_status_t btree_submit_bio_start(struct inode *inode, struct bio *bio,
u64 dio_file_offset);
int btrfs_alloc_log_tree_node(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
int btrfs_init_log_root_tree(struct btrfs_trans_handle *trans,

3
fs/btrfs/extent_io.h
View File

@ -70,9 +70,6 @@ struct extent_io_tree;
int __init extent_buffer_init_cachep(void);
void __cold extent_buffer_free_cachep(void);
typedef blk_status_t (extent_submit_bio_start_t)(struct inode *inode,
struct bio *bio, u64 dio_file_offset);
#define INLINE_EXTENT_BUFFER_PAGES (BTRFS_MAX_METADATA_BLOCKSIZE / PAGE_SIZE)
struct extent_buffer {
u64 start;

15
fs/btrfs/inode.c
View File

@ -2550,8 +2550,8 @@ void btrfs_clear_delalloc_extent(struct inode *vfs_inode,
* At IO completion time the cums attached on the ordered extent record
* are inserted into the btree
*/
static blk_status_t btrfs_submit_bio_start(struct inode *inode, struct bio *bio,
u64 dio_file_offset)
blk_status_t btrfs_submit_bio_start(struct inode *inode, struct bio *bio,
u64 dio_file_offset)
{
return btrfs_csum_one_bio(BTRFS_I(inode), bio, (u64)-1, false);
}
@ -2758,8 +2758,7 @@ void btrfs_submit_data_write_bio(struct inode *inode, struct bio *bio, int mirro
!test_bit(BTRFS_FS_STATE_NO_CSUMS, &fs_info->fs_state) &&
!btrfs_is_data_reloc_root(bi->root)) {
if (!atomic_read(&bi->sync_writers) &&
btrfs_wq_submit_bio(inode, bio, mirror_num, 0,
btrfs_submit_bio_start))
btrfs_wq_submit_bio(inode, bio, mirror_num, 0, WQ_SUBMIT_DATA))
return;
ret = btrfs_csum_one_bio(bi, bio, (u64)-1, false);
@ -7967,9 +7966,9 @@ static blk_status_t btrfs_check_read_dio_bio(struct btrfs_dio_private *dip,
return err;
}
static blk_status_t btrfs_submit_bio_start_direct_io(struct inode *inode,
struct bio *bio,
u64 dio_file_offset)
blk_status_t btrfs_submit_bio_start_direct_io(struct inode *inode,
struct bio *bio,
u64 dio_file_offset)
{
return btrfs_csum_one_bio(BTRFS_I(inode), bio, dio_file_offset, false);
}
@ -8017,7 +8016,7 @@ static void btrfs_submit_dio_bio(struct bio *bio, struct inode *inode,
/* Check btrfs_submit_data_write_bio() for async submit rules */
if (async_submit && !atomic_read(&BTRFS_I(inode)->sync_writers) &&
btrfs_wq_submit_bio(inode, bio, 0, file_offset,
btrfs_submit_bio_start_direct_io))
WQ_SUBMIT_DATA_DIO))
return;
/*