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btrfs: remove struct btrfs_bio::is_metadata flag

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This flag is unused now, so remove it.  Re-expand the mirror_num field
to 8 bits, and move it to the I/O completion internal section of the
structure.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.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 2023-01-21 07:50:14 +01:00 committed by David Sterba
parent 0d3acb25e7
commit 295fe46ff1
2 changed files with 1 additions and 11 deletions
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11
fs/btrfs/bio.h
View File

@ -30,16 +30,6 @@ typedef void (*btrfs_bio_end_io_t)(struct btrfs_bio *bbio);
* passed to btrfs_submit_bio for mapping to the physical devices.
*/
struct btrfs_bio {
unsigned int mirror_num:7;
/*
* Extra indicator for metadata bios.
* For some btrfs bios they use pages without a mapping, thus
* we can not rely on page->mapping->host to determine if
* it's a metadata bio.
*/
unsigned int is_metadata:1;
/* Inode and offset into it that this I/O operates on. */
struct btrfs_inode *inode;
u64 file_offset;
@ -64,6 +54,7 @@ struct btrfs_bio {
void *private;
/* For internal use in read end I/O handling */
unsigned int mirror_num;
struct work_struct end_io_work;
/*

1
fs/btrfs/disk-io.c
View File

@ -846,7 +846,6 @@ void btrfs_submit_metadata_bio(struct btrfs_inode *inode, struct bio *bio, int m
blk_status_t ret;
bio->bi_opf |= REQ_META;
bbio->is_metadata = 1;
if (btrfs_op(bio) != BTRFS_MAP_WRITE) {
btrfs_submit_bio(fs_info, bio, mirror_num);