From 2a5232a8cef299a28536b4bb32eb5f75d0002293 Mon Sep 17 00:00:00 2001 From: David Sterba Date: Tue, 27 Jul 2021 14:47:09 +0200 Subject: [PATCH] btrfs: simplify handling of bio_ctrl::bio_flags The bio_flags are used only to encode the compression and there are no other EXTENT_BIO_* flags, so the compress type can be stored directly. The struct member name is left unchanged and will be cleaned in later patches. Reviewed-by: Johannes Thumshirn Reviewed-by: Nikolay Borisov Signed-off-by: David Sterba --- fs/btrfs/extent_io.c | 13 ++++++------- fs/btrfs/extent_io.h | 11 ++--------- fs/btrfs/inode.c | 2 +- 3 files changed, 9 insertions(+), 17 deletions(-) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index af6c98d..ecb1573 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -29,6 +29,7 @@ #include "subpage.h" #include "zoned.h" #include "block-group.h" +#include "compression.h" static struct kmem_cache *extent_state_cache; static struct kmem_cache *extent_buffer_cache; @@ -2561,7 +2562,6 @@ static struct io_failure_record *btrfs_get_io_failure_record(struct inode *inode logical = em->block_start + logical; if (test_bit(EXTENT_FLAG_COMPRESSED, &em->flags)) { logical = em->block_start; - failrec->bio_flags = EXTENT_BIO_COMPRESSED; extent_set_compress_type(&failrec->bio_flags, em->compress_type); } @@ -3273,7 +3273,7 @@ static int btrfs_bio_add_page(struct btrfs_bio_ctrl *bio_ctrl, if (bio_ctrl->bio_flags != bio_flags) return 0; - if (bio_ctrl->bio_flags & EXTENT_BIO_COMPRESSED) + if (bio_ctrl->bio_flags != BTRFS_COMPRESS_NONE) contig = bio->bi_iter.bi_sector == sector; else contig = bio_end_sector(bio) == sector; @@ -3316,7 +3316,7 @@ static int calc_bio_boundaries(struct btrfs_bio_ctrl *bio_ctrl, * The split happens for real compressed bio, which happens in * btrfs_submit_compressed_read/write(). */ - if (bio_ctrl->bio_flags & EXTENT_BIO_COMPRESSED) { + if (bio_ctrl->bio_flags != BTRFS_COMPRESS_NONE) { bio_ctrl->len_to_oe_boundary = U32_MAX; bio_ctrl->len_to_stripe_boundary = U32_MAX; return 0; @@ -3370,7 +3370,7 @@ static int alloc_new_bio(struct btrfs_inode *inode, * For compressed page range, its disk_bytenr is always @disk_bytenr * passed in, no matter if we have added any range into previous bio. */ - if (bio_flags & EXTENT_BIO_COMPRESSED) + if (bio_flags != BTRFS_COMPRESS_NONE) bio->bi_iter.bi_sector = disk_bytenr >> SECTOR_SHIFT; else bio->bi_iter.bi_sector = (disk_bytenr + offset) >> SECTOR_SHIFT; @@ -3476,7 +3476,7 @@ static int submit_extent_page(unsigned int opf, * We must go through btrfs_bio_add_page() to ensure each * page range won't cross various boundaries. */ - if (bio_flags & EXTENT_BIO_COMPRESSED) + if (bio_flags != BTRFS_COMPRESS_NONE) added = btrfs_bio_add_page(bio_ctrl, page, disk_bytenr, size - offset, pg_offset + offset, bio_flags); @@ -3682,7 +3682,6 @@ static int btrfs_do_readpage(struct page *page, struct extent_map **em_cached, BUG_ON(end < cur); if (test_bit(EXTENT_FLAG_COMPRESSED, &em->flags)) { - this_bio_flag |= EXTENT_BIO_COMPRESSED; extent_set_compress_type(&this_bio_flag, em->compress_type); } @@ -3690,7 +3689,7 @@ static int btrfs_do_readpage(struct page *page, struct extent_map **em_cached, iosize = min(extent_map_end(em) - cur, end - cur + 1); cur_end = min(extent_map_end(em) - 1, end); iosize = ALIGN(iosize, blocksize); - if (this_bio_flag & EXTENT_BIO_COMPRESSED) + if (this_bio_flag != BTRFS_COMPRESS_NONE) disk_bytenr = em->block_start; else disk_bytenr = em->block_start + extent_offset; diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h index b390ec79..ba793cb 100644 --- a/fs/btrfs/extent_io.h +++ b/fs/btrfs/extent_io.h @@ -9,13 +9,6 @@ #include #include "ulist.h" -/* - * flags for bio submission. The high bits indicate the compression - * type for this bio - */ -#define EXTENT_BIO_COMPRESSED 1 -#define EXTENT_BIO_FLAG_SHIFT 16 - enum { EXTENT_BUFFER_UPTODATE, EXTENT_BUFFER_DIRTY, @@ -150,12 +143,12 @@ static inline void extent_changeset_free(struct extent_changeset *changeset) static inline void extent_set_compress_type(unsigned long *bio_flags, int compress_type) { - *bio_flags |= compress_type << EXTENT_BIO_FLAG_SHIFT; + *bio_flags = compress_type; } static inline int extent_compress_type(unsigned long bio_flags) { - return bio_flags >> EXTENT_BIO_FLAG_SHIFT; + return bio_flags; } struct extent_map_tree; diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 6a4ca1a..97b5342 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -2602,7 +2602,7 @@ void btrfs_submit_data_bio(struct inode *inode, struct bio *bio, if (ret) goto out; - if (bio_flags & EXTENT_BIO_COMPRESSED) { + if (bio_flags != BTRFS_COMPRESS_NONE) { /* * btrfs_submit_compressed_read will handle completing * the bio if there were any errors, so just return -- 2.7.4