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-rw-r--r--fs/squashfs/lzo_wrapper.c27
1 files changed, 18 insertions, 9 deletions
diff --git a/fs/squashfs/lzo_wrapper.c b/fs/squashfs/lzo_wrapper.c
index 75c3b5779172..244b9fbfff7b 100644
--- a/fs/squashfs/lzo_wrapper.c
+++ b/fs/squashfs/lzo_wrapper.c
@@ -31,6 +31,7 @@
#include "squashfs_fs_sb.h"
#include "squashfs.h"
#include "decompressor.h"
+#include "page_actor.h"
struct squashfs_lzo {
void *input;
@@ -75,13 +76,13 @@ static void lzo_free(void *strm)
static int lzo_uncompress(struct squashfs_sb_info *msblk, void *strm,
- void **buffer, struct buffer_head **bh, int b, int offset, int length,
- int srclength, int pages)
+ struct buffer_head **bh, int b, int offset, int length,
+ struct squashfs_page_actor *output)
{
struct squashfs_lzo *stream = strm;
- void *buff = stream->input;
+ void *buff = stream->input, *data;
int avail, i, bytes = length, res;
- size_t out_len = srclength;
+ size_t out_len = output->length;
for (i = 0; i < b; i++) {
avail = min(bytes, msblk->devblksize - offset);
@@ -98,12 +99,20 @@ static int lzo_uncompress(struct squashfs_sb_info *msblk, void *strm,
goto failed;
res = bytes = (int)out_len;
- for (i = 0, buff = stream->output; bytes && i < pages; i++) {
- avail = min_t(int, bytes, PAGE_CACHE_SIZE);
- memcpy(buffer[i], buff, avail);
- buff += avail;
- bytes -= avail;
+ data = squashfs_first_page(output);
+ buff = stream->output;
+ while (data) {
+ if (bytes <= PAGE_CACHE_SIZE) {
+ memcpy(data, buff, bytes);
+ break;
+ } else {
+ memcpy(data, buff, PAGE_CACHE_SIZE);
+ buff += PAGE_CACHE_SIZE;
+ bytes -= PAGE_CACHE_SIZE;
+ data = squashfs_next_page(output);
+ }
}
+ squashfs_finish_page(output);
return res;