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btrfs: sink gfp parameter to btrfs_io_bio_alloc 

We can hardcode GFP_NOFS to btrfs_io_bio_alloc, although it means we
change it back from GFP_KERNEL in scrub. I'd rather save a few stack
bytes from not passing the gfp flags in the remaining, more imporatant,
contexts and the bio allocating API now looks more consistent.

Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2017-06-12 17:29:41 +02:00
parent 184f999e12
commit c5e4c3d750
6 changed files with 15 additions and 17 deletions
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2
fs/btrfs/check-integrity.c
View File

@ -1638,7 +1638,7 @@ static int btrfsic_read_block(struct btrfsic_state *state,
struct bio *bio;
unsigned int j;
bio = btrfs_io_bio_alloc(GFP_NOFS, num_pages - i);
bio = btrfs_io_bio_alloc(num_pages - i);
bio->bi_bdev = block_ctx->dev->bdev;
bio->bi_iter.bi_sector = dev_bytenr >> 9;
bio_set_op_attrs(bio, REQ_OP_READ, 0);

2
fs/btrfs/disk-io.c
View File

@ -3532,7 +3532,7 @@ static int write_dev_flush(struct btrfs_device *device, int wait)
* caller
*/
device->flush_bio = NULL;
bio = btrfs_io_bio_alloc(GFP_NOFS, 0);
bio = btrfs_io_bio_alloc(0);
bio->bi_end_io = btrfs_end_empty_barrier;
bio->bi_bdev = device->bdev;
bio->bi_opf = REQ_OP_WRITE | REQ_SYNC | REQ_PREFLUSH;

8
fs/btrfs/extent_io.c
View File

@ -1987,7 +1987,7 @@ int repair_io_failure(struct btrfs_fs_info *fs_info, u64 ino, u64 start,
ASSERT(!(fs_info->sb->s_flags & MS_RDONLY));
BUG_ON(!mirror_num);
bio = btrfs_io_bio_alloc(GFP_NOFS, 1);
bio = btrfs_io_bio_alloc(1);
bio->bi_iter.bi_size = 0;
map_length = length;
@ -2331,7 +2331,7 @@ struct bio *btrfs_create_repair_bio(struct inode *inode, struct bio *failed_bio,
struct btrfs_io_bio *btrfs_failed_bio;
struct btrfs_io_bio *btrfs_bio;
bio = btrfs_io_bio_alloc(GFP_NOFS, 1);
bio = btrfs_io_bio_alloc(1);
bio->bi_end_io = endio_func;
bio->bi_iter.bi_sector = failrec->logical >> 9;
bio->bi_bdev = fs_info->fs_devices->latest_bdev;
@ -2692,12 +2692,12 @@ struct bio *btrfs_bio_clone(struct bio *bio)
return new;
}
struct bio *btrfs_io_bio_alloc(gfp_t gfp_mask, unsigned int nr_iovecs)
struct bio *btrfs_io_bio_alloc(unsigned int nr_iovecs)
{
struct bio *bio;
/* Bio allocation backed by a bioset does not fail */
bio = bio_alloc_bioset(gfp_mask, nr_iovecs, btrfs_bioset);
bio = bio_alloc_bioset(GFP_NOFS, nr_iovecs, btrfs_bioset);
btrfs_io_bio_init(btrfs_io_bio(bio));
return bio;
}

2
fs/btrfs/extent_io.h
View File

@ -463,7 +463,7 @@ void extent_clear_unlock_delalloc(struct inode *inode, u64 start, u64 end,
unsigned bits_to_clear,
unsigned long page_ops);
struct bio *btrfs_bio_alloc(struct block_device *bdev, u64 first_byte);
struct bio *btrfs_io_bio_alloc(gfp_t gfp_mask, unsigned int nr_iovecs);
struct bio *btrfs_io_bio_alloc(unsigned int nr_iovecs);
struct bio *btrfs_bio_clone(struct bio *bio);
struct bio *btrfs_bio_clone_partial(struct bio *orig, int offset, int size);

2
fs/btrfs/raid56.c
View File

@ -1098,7 +1098,7 @@ static int rbio_add_io_page(struct btrfs_raid_bio *rbio,
}
/* put a new bio on the list */
bio = btrfs_io_bio_alloc(GFP_NOFS, bio_max_len >> PAGE_SHIFT?:1);
bio = btrfs_io_bio_alloc(bio_max_len >> PAGE_SHIFT ?: 1);
bio->bi_iter.bi_size = 0;
bio->bi_bdev = stripe->dev->bdev;
bio->bi_iter.bi_sector = disk_start >> 9;

16
fs/btrfs/scrub.c
View File

@ -1737,7 +1737,7 @@ static void scrub_recheck_block(struct btrfs_fs_info *fs_info,
}
WARN_ON(!page->page);
bio = btrfs_io_bio_alloc(GFP_NOFS, 1);
bio = btrfs_io_bio_alloc(1);
bio->bi_bdev = page->dev->bdev;
bio_add_page(bio, page->page, PAGE_SIZE, 0);
@ -1825,7 +1825,7 @@ static int scrub_repair_page_from_good_copy(struct scrub_block *sblock_bad,
return -EIO;
}
bio = btrfs_io_bio_alloc(GFP_NOFS, 1);
bio = btrfs_io_bio_alloc(1);
bio->bi_bdev = page_bad->dev->bdev;
bio->bi_iter.bi_sector = page_bad->physical >> 9;
bio_set_op_attrs(bio, REQ_OP_WRITE, 0);
@ -1915,8 +1915,7 @@ static int scrub_add_page_to_wr_bio(struct scrub_ctx *sctx,
sbio->dev = sctx->wr_tgtdev;
bio = sbio->bio;
if (!bio) {
bio = btrfs_io_bio_alloc(GFP_KERNEL,
sctx->pages_per_wr_bio);
bio = btrfs_io_bio_alloc(sctx->pages_per_wr_bio);
sbio->bio = bio;
}
@ -2316,8 +2315,7 @@ static int scrub_add_page_to_rd_bio(struct scrub_ctx *sctx,
sbio->dev = spage->dev;
bio = sbio->bio;
if (!bio) {
bio = btrfs_io_bio_alloc(GFP_KERNEL,
sctx->pages_per_rd_bio);
bio = btrfs_io_bio_alloc(sctx->pages_per_rd_bio);
sbio->bio = bio;
}
@ -2443,7 +2441,7 @@ static void scrub_missing_raid56_pages(struct scrub_block *sblock)
goto bbio_out;
}
bio = btrfs_io_bio_alloc(GFP_NOFS, 0);
bio = btrfs_io_bio_alloc(0);
bio->bi_iter.bi_sector = logical >> 9;
bio->bi_private = sblock;
bio->bi_end_io = scrub_missing_raid56_end_io;
@ -3019,7 +3017,7 @@ static void scrub_parity_check_and_repair(struct scrub_parity *sparity)
if (ret || !bbio || !bbio->raid_map)
goto bbio_out;
bio = btrfs_io_bio_alloc(GFP_NOFS, 0);
bio = btrfs_io_bio_alloc(0);
bio->bi_iter.bi_sector = sparity->logic_start >> 9;
bio->bi_private = sparity;
bio->bi_end_io = scrub_parity_bio_endio;
@ -4626,7 +4624,7 @@ static int write_page_nocow(struct scrub_ctx *sctx,
"scrub write_page_nocow(bdev == NULL) is unexpected");
return -EIO;
}
bio = btrfs_io_bio_alloc(GFP_NOFS, 1);
bio = btrfs_io_bio_alloc(1);
bio->bi_iter.bi_size = 0;
bio->bi_iter.bi_sector = physical_for_dev_replace >> 9;
bio->bi_bdev = dev->bdev;