From 81381053d094a3098d27eba7bb9b9aaf0e197a4a Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Fri, 25 Nov 2016 09:07:50 +0100 Subject: [PATCH] btrfs: use bi_size Instead of using bi_vcnt to calculate it. Signed-off-by: Christoph Hellwig Reviewed-by: Omar Sandoval Signed-off-by: David Sterba --- fs/btrfs/compression.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c index b060465c4fad..1a618cb5370b 100644 --- a/fs/btrfs/compression.c +++ b/fs/btrfs/compression.c @@ -562,7 +562,6 @@ next: * * bio->bi_iter.bi_sector points to the compressed extent on disk * bio->bi_io_vec points to all of the inode pages - * bio->bi_vcnt is a count of pages * * After the compressed pages are read, we copy the bytes into the * bio we were passed and then call the bio end_io calls @@ -574,7 +573,6 @@ int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio, struct extent_map_tree *em_tree; struct compressed_bio *cb; struct btrfs_root *root = BTRFS_I(inode)->root; - unsigned long uncompressed_len = bio->bi_vcnt * PAGE_SIZE; unsigned long compressed_len; unsigned long nr_pages; unsigned long pg_index; @@ -619,7 +617,7 @@ int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio, free_extent_map(em); em = NULL; - cb->len = uncompressed_len; + cb->len = bio->bi_iter.bi_size; cb->compressed_len = compressed_len; cb->compress_type = extent_compress_type(bio_flags); cb->orig_bio = bio; @@ -647,8 +645,7 @@ int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio, add_ra_bio_pages(inode, em_start + em_len, cb); /* include any pages we added in add_ra-bio_pages */ - uncompressed_len = bio->bi_vcnt * PAGE_SIZE; - cb->len = uncompressed_len; + cb->len = bio->bi_iter.bi_size; comp_bio = compressed_bio_alloc(bdev, cur_disk_byte, GFP_NOFS); if (!comp_bio)