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Date: Sat, 11 Jan 2020 17:08:46 +0800
From: Chao Yu <yuchao0@...wei.com>
To: Jaegeuk Kim <jaegeuk@...nel.org>
CC: <linux-kernel@...r.kernel.org>,
<linux-f2fs-devel@...ts.sourceforge.net>
Subject: Re: [f2fs-dev] [RFC PATCH v5] f2fs: support data compression
On 2020/1/11 7:52, Jaegeuk Kim wrote:
> On 01/06, Jaegeuk Kim wrote:
>> On 01/06, Chao Yu wrote:
>>> On 2020/1/3 14:50, Chao Yu wrote:
>>>> This works to me. Could you run fsstress tests on compressed root directory?
>>>> It seems still there are some bugs.
>>>
>>> Jaegeuk,
>>>
>>> Did you mean running por_fsstress testcase?
>>>
>>> Now, at least I didn't hit any problem for normal fsstress case.
>>
>> Yup. por_fsstress
>
> Please check https://github.com/jaegeuk/f2fs/commits/g-dev-test.
> I've fixed
> - truncation offset
> - i_compressed_blocks and its lock coverage
> - error handling
> - etc
I changed as below, and por_fsstress stops panic the system.
Could you merge all these fixes into original patch?
>From bb17d7d77fe0b8a3e3632a7026550800ab9609e9 Mon Sep 17 00:00:00 2001
From: Chao Yu <yuchao0@...wei.com>
Date: Sat, 11 Jan 2020 16:58:20 +0800
Subject: [PATCH] f2fs: compress: fix f2fs_put_rpages_mapping()
Signed-off-by: Chao Yu <yuchao0@...wei.com>
---
fs/f2fs/compress.c | 30 +++++++++++++++---------------
1 file changed, 15 insertions(+), 15 deletions(-)
diff --git a/fs/f2fs/compress.c b/fs/f2fs/compress.c
index 502cd0ddc2a7..5c6a31d84ce4 100644
--- a/fs/f2fs/compress.c
+++ b/fs/f2fs/compress.c
@@ -74,18 +74,10 @@ static void f2fs_put_compressed_page(struct page *page)
}
static void f2fs_drop_rpages(struct compress_ctx *cc,
- struct address_space *mapping, int len, bool unlock)
+ int len, bool unlock)
{
unsigned int i;
for (i = 0; i < len; i++) {
- if (mapping) {
- pgoff_t start = start_idx_of_cluster(cc);
- struct page *page = find_get_page(mapping, start + i);
-
- put_page(page);
- put_page(page);
- cc->rpages[i] = NULL;
- }
if (!cc->rpages[i])
continue;
if (unlock)
@@ -97,18 +89,25 @@ static void f2fs_drop_rpages(struct compress_ctx *cc,
static void f2fs_put_rpages(struct compress_ctx *cc)
{
- f2fs_drop_rpages(cc, NULL, cc->cluster_size, false);
+ f2fs_drop_rpages(cc, cc->cluster_size, false);
}
static void f2fs_unlock_rpages(struct compress_ctx *cc, int len)
{
- f2fs_drop_rpages(cc, NULL, len, true);
+ f2fs_drop_rpages(cc, len, true);
}
static void f2fs_put_rpages_mapping(struct compress_ctx *cc,
- struct address_space *mapping, int len)
+ struct address_space *mapping,
+ pgoff_t start, int len)
{
- f2fs_drop_rpages(cc, mapping, len, false);
+ int i;
+ for (i = 0; i < len; i++) {
+ struct page *page = find_get_page(mapping, start + i);
+
+ put_page(page);
+ put_page(page);
+ }
}
static void f2fs_put_rpages_wbc(struct compress_ctx *cc,
@@ -680,7 +679,8 @@ static int prepare_compress_overwrite(struct compress_ctx *cc,
if (!PageUptodate(page)) {
f2fs_unlock_rpages(cc, i + 1);
- f2fs_put_rpages_mapping(cc, mapping, cc->cluster_size);
+ f2fs_put_rpages_mapping(cc, mapping, start_idx,
+ cc->cluster_size);
f2fs_destroy_compress_ctx(cc);
goto retry;
}
@@ -714,7 +714,7 @@ static int prepare_compress_overwrite(struct compress_ctx *cc,
unlock_pages:
f2fs_unlock_rpages(cc, i);
release_pages:
- f2fs_put_rpages_mapping(cc, mapping, i);
+ f2fs_put_rpages_mapping(cc, mapping, start_idx, i);
f2fs_destroy_compress_ctx(cc);
return ret;
}
--
2.18.0.rc1
>
> One another fix in f2fs-tools as well.
> https://github.com/jaegeuk/f2fs-tools
>
>>
>>>
>>> Thanks,
> .
>
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