From: Qu Wenruo Date: Mon, 27 Sep 2021 07:22:00 +0000 (+0800) Subject: btrfs: subpage: make btrfs_submit_compressed_write() compatible X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=bbbff01a47bfe1b7733c5ccac6a78ff6d7a8954f;p=linux.git btrfs: subpage: make btrfs_submit_compressed_write() compatible There is a WARN_ON() checking if @start is aligned to PAGE_SIZE, not sectorsize, which will cause false alert for subpage. Fix it to check against sectorsize. Furthermore: - Use ASSERT() to do the check So that in the future we may skip the check for production build - Also check alignment for @len Signed-off-by: Qu Wenruo Signed-off-by: David Sterba --- diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c index 1debdfeee90ff..ab2eb936975fd 100644 --- a/fs/btrfs/compression.c +++ b/fs/btrfs/compression.c @@ -513,7 +513,8 @@ blk_status_t btrfs_submit_compressed_write(struct btrfs_inode *inode, u64 start, const bool use_append = btrfs_use_zone_append(inode, disk_start); const unsigned int bio_op = use_append ? REQ_OP_ZONE_APPEND : REQ_OP_WRITE; - WARN_ON(!PAGE_ALIGNED(start)); + ASSERT(IS_ALIGNED(start, fs_info->sectorsize) && + IS_ALIGNED(len, fs_info->sectorsize)); cb = kmalloc(compressed_bio_size(fs_info, compressed_len), GFP_NOFS); if (!cb) return BLK_STS_RESOURCE;