diff options
Diffstat (limited to 'fs/squashfs/lz4_wrapper.c')
| -rw-r--r-- | fs/squashfs/lz4_wrapper.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/fs/squashfs/lz4_wrapper.c b/fs/squashfs/lz4_wrapper.c index c4e47e0588c7..233d5582fbee 100644 --- a/fs/squashfs/lz4_wrapper.c +++ b/fs/squashfs/lz4_wrapper.c @@ -4,7 +4,7 @@ * Phillip Lougher <phillip@squashfs.org.uk> */ -#include <linux/buffer_head.h> +#include <linux/bio.h> #include <linux/mutex.h> #include <linux/slab.h> #include <linux/vmalloc.h> @@ -89,20 +89,23 @@ static void lz4_free(void *strm) static int lz4_uncompress(struct squashfs_sb_info *msblk, void *strm, - struct buffer_head **bh, int b, int offset, int length, + struct bio *bio, int offset, int length, struct squashfs_page_actor *output) { + struct bvec_iter_all iter_all = {}; + struct bio_vec *bvec = bvec_init_iter_all(&iter_all); struct squashfs_lz4 *stream = strm; void *buff = stream->input, *data; - int avail, i, bytes = length, res; + int bytes = length, res; - for (i = 0; i < b; i++) { - avail = min(bytes, msblk->devblksize - offset); - memcpy(buff, bh[i]->b_data + offset, avail); + while (bio_next_segment(bio, &iter_all)) { + int avail = min(bytes, ((int)bvec->bv_len) - offset); + + data = page_address(bvec->bv_page) + bvec->bv_offset; + memcpy(buff, data + offset, avail); buff += avail; bytes -= avail; offset = 0; - put_bh(bh[i]); } res = LZ4_decompress_safe(stream->input, stream->output, |