ret = -ENOMEM;
goto out;
}
- cpage_out = kmap(out_page);
+ cpage_out = page_address(out_page);
pages[0] = out_page;
nr_pages = 1;
int i;
for (i = 0; i < in_buf_pages; i++) {
- if (in_page) {
- kunmap(in_page);
+ if (in_page)
put_page(in_page);
- }
in_page = find_get_page(mapping,
start >> PAGE_SHIFT);
- data_in = kmap(in_page);
+ data_in = page_address(in_page);
memcpy(workspace->buf + i * PAGE_SIZE,
data_in, PAGE_SIZE);
start += PAGE_SIZE;
}
workspace->strm.next_in = workspace->buf;
} else {
- if (in_page) {
- kunmap(in_page);
+ if (in_page)
put_page(in_page);
- }
in_page = find_get_page(mapping,
start >> PAGE_SHIFT);
- data_in = kmap(in_page);
+ data_in = page_address(in_page);
start += PAGE_SIZE;
workspace->strm.next_in = data_in;
}
* the stream end if required
*/
if (workspace->strm.avail_out == 0) {
- kunmap(out_page);
if (nr_pages == nr_dest_pages) {
out_page = NULL;
ret = -E2BIG;
ret = -ENOMEM;
goto out;
}
- cpage_out = kmap(out_page);
+ cpage_out = page_address(out_page);
pages[nr_pages] = out_page;
nr_pages++;
workspace->strm.avail_out = PAGE_SIZE;
goto out;
} else if (workspace->strm.avail_out == 0) {
/* get another page for the stream end */
- kunmap(out_page);
if (nr_pages == nr_dest_pages) {
out_page = NULL;
ret = -E2BIG;
ret = -ENOMEM;
goto out;
}
- cpage_out = kmap(out_page);
+ cpage_out = page_address(out_page);
pages[nr_pages] = out_page;
nr_pages++;
workspace->strm.avail_out = PAGE_SIZE;
*total_in = workspace->strm.total_in;
out:
*out_pages = nr_pages;
- if (out_page)
- kunmap(out_page);
-
- if (in_page) {
- kunmap(in_page);
+ if (in_page)
put_page(in_page);
- }
return ret;
}
unsigned long total_pages_in = DIV_ROUND_UP(srclen, PAGE_SIZE);
unsigned long buf_start;
struct page **pages_in = cb->compressed_pages;
- u64 disk_start = cb->start;
- struct bio *orig_bio = cb->orig_bio;
- data_in = kmap(pages_in[page_in_index]);
+ data_in = page_address(pages_in[page_in_index]);
workspace->strm.next_in = data_in;
workspace->strm.avail_in = min_t(size_t, srclen, PAGE_SIZE);
workspace->strm.total_in = 0;
if (Z_OK != zlib_inflateInit2(&workspace->strm, wbits)) {
pr_warn("BTRFS: inflateInit failed\n");
- kunmap(pages_in[page_in_index]);
return -EIO;
}
while (workspace->strm.total_in < srclen) {
if (buf_start == total_out)
break;
- ret2 = btrfs_decompress_buf2page(workspace->buf, buf_start,
- total_out, disk_start,
- orig_bio);
+ ret2 = btrfs_decompress_buf2page(workspace->buf,
+ total_out - buf_start, cb, buf_start);
if (ret2 == 0) {
ret = 0;
goto done;
if (workspace->strm.avail_in == 0) {
unsigned long tmp;
- kunmap(pages_in[page_in_index]);
+
page_in_index++;
if (page_in_index >= total_pages_in) {
data_in = NULL;
break;
}
- data_in = kmap(pages_in[page_in_index]);
+ data_in = page_address(pages_in[page_in_index]);
workspace->strm.next_in = data_in;
tmp = srclen - workspace->strm.total_in;
- workspace->strm.avail_in = min(tmp,
- PAGE_SIZE);
+ workspace->strm.avail_in = min(tmp, PAGE_SIZE);
}
}
if (ret != Z_STREAM_END)
ret = 0;
done:
zlib_inflateEnd(&workspace->strm);
- if (data_in)
- kunmap(pages_in[page_in_index]);
if (!ret)
- zero_fill_bio(orig_bio);
+ zero_fill_bio(cb->orig_bio);
return ret;
}