diff options
Diffstat (limited to 'fs/squashfs/lzo_wrapper.c')
| -rw-r--r-- | fs/squashfs/lzo_wrapper.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/fs/squashfs/lzo_wrapper.c b/fs/squashfs/lzo_wrapper.c index 97bb7d92ddcd..d216aeefa865 100644 --- a/fs/squashfs/lzo_wrapper.c +++ b/fs/squashfs/lzo_wrapper.c @@ -76,7 +76,7 @@ static int lzo_uncompress(struct squashfs_sb_info *msblk, void *strm, 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; + data = bvec_virt(bvec); memcpy(buff, data + offset, avail); buff += avail; bytes -= avail; @@ -93,10 +93,12 @@ static int lzo_uncompress(struct squashfs_sb_info *msblk, void *strm, buff = stream->output; while (data) { if (bytes <= PAGE_SIZE) { - memcpy(data, buff, bytes); + if (!IS_ERR(data)) + memcpy(data, buff, bytes); break; } else { - memcpy(data, buff, PAGE_SIZE); + if (!IS_ERR(data)) + memcpy(data, buff, PAGE_SIZE); buff += PAGE_SIZE; bytes -= PAGE_SIZE; data = squashfs_next_page(output); @@ -116,5 +118,6 @@ const struct squashfs_decompressor squashfs_lzo_comp_ops = { .decompress = lzo_uncompress, .id = LZO_COMPRESSION, .name = "lzo", + .alloc_buffer = 0, .supported = 1 }; |