diff options
Diffstat (limited to 'fs/btrfs/inode.c')
| -rw-r--r-- | fs/btrfs/inode.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 750482a06d67..31545e503b9e 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -2215,6 +2215,33 @@ static blk_status_t btrfs_submit_bio_start(struct inode *inode, struct bio *bio, return btrfs_csum_one_bio(BTRFS_I(inode), bio, 0, 0); } +bool btrfs_bio_fits_in_ordered_extent(struct page *page, struct bio *bio, + unsigned int size) +{ + struct btrfs_inode *inode = BTRFS_I(page->mapping->host); + struct btrfs_fs_info *fs_info = inode->root->fs_info; + struct btrfs_ordered_extent *ordered; + u64 len = bio->bi_iter.bi_size + size; + bool ret = true; + + ASSERT(btrfs_is_zoned(fs_info)); + ASSERT(fs_info->max_zone_append_size > 0); + ASSERT(bio_op(bio) == REQ_OP_ZONE_APPEND); + + /* Ordered extent not yet created, so we're good */ + ordered = btrfs_lookup_ordered_extent(inode, page_offset(page)); + if (!ordered) + return ret; + + if ((bio->bi_iter.bi_sector << SECTOR_SHIFT) + len > + ordered->disk_bytenr + ordered->disk_num_bytes) + ret = false; + + btrfs_put_ordered_extent(ordered); + + return ret; +} + static blk_status_t extract_ordered_extent(struct btrfs_inode *inode, struct bio *bio, loff_t file_offset) { |