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btrfs: reduce arguments for decompress_bio ops

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struct compressed_bio pointer can be used instead.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Anand Jain
2017-05-26 15:44:59 +08:00
committed by David Sterba
parent 8140dc30a4
commit e1ddce71d6
4 changed files with 54 additions and 57 deletions
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10
fs/btrfs/zlib.c
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@@ -30,6 +30,7 @@
#include <linux/sched.h>
#include <linux/pagemap.h>
#include <linux/bio.h>
#include <linux/refcount.h>
#include "compression.h"
struct workspace {
@@ -211,10 +212,7 @@ out:
return ret;
}
static int zlib_decompress_bio(struct list_head *ws, struct page **pages_in,
u64 disk_start,
struct bio *orig_bio,
size_t srclen)
static int zlib_decompress_bio(struct list_head *ws, struct compressed_bio *cb)
{
struct workspace *workspace = list_entry(ws, struct workspace, list);
int ret = 0, ret2;
@@ -222,8 +220,12 @@ static int zlib_decompress_bio(struct list_head *ws, struct page **pages_in,
char *data_in;
size_t total_out = 0;
unsigned long page_in_index = 0;
size_t srclen = cb->compressed_len;
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]);
workspace->strm.next_in = data_in;