From: Chao Yu <chao2.yu@samsung.com>
To: 'Gu Zheng' <guz.fnst@cn.fujitsu.com>, 'Kim' <jaegeuk.kim@samsung.com>
Cc: 'fsdevel' <linux-fsdevel@vger.kernel.org>,
'linux-kernel' <linux-kernel@vger.kernel.org>,
'f2fs' <linux-f2fs-devel@lists.sourceforge.net>
Subject: Re: [PATCH 1/3] f2fs: move grabing orphan pages out of protection region
Date: Sat, 11 Jan 2014 09:27:55 +0800 [thread overview]
Message-ID: <000001cf0e6c$77982430$66c86c90$@samsung.com> (raw)
In-Reply-To: <52CFC6BE.7020609@cn.fujitsu.com>
Hi Gu,
> -----Original Message-----
> From: Gu Zheng [mailto:guz.fnst@cn.fujitsu.com]
> Sent: Friday, January 10, 2014 6:09 PM
> To: Kim
> Cc: fsdevel; linux-kernel; f2fs
> Subject: [f2fs-dev] [PATCH 1/3] f2fs: move grabing orphan pages out of protection region
>
> Move grabing orphan block page out of protection region, and grab all
> the orphan block pages ahead.
>
> Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Reviewed-by: Chao Yu <chao2.yu@samsung.com>
> ---
> fs/f2fs/checkpoint.c | 15 +++++++++------
> 1 files changed, 9 insertions(+), 6 deletions(-)
>
> diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
> index 0d78bbe..af92c74 100644
> --- a/fs/f2fs/checkpoint.c
> +++ b/fs/f2fs/checkpoint.c
> @@ -303,22 +303,25 @@ static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t
> start_blk)
> {
> struct list_head *head;
> struct f2fs_orphan_block *orphan_blk = NULL;
> - struct page *page = NULL;
> unsigned int nentries = 0;
> - unsigned short index = 1;
> - unsigned short orphan_blocks;
> + unsigned short index;
> + unsigned short orphan_blocks = (unsigned short)((sbi->n_orphans +
> + (F2FS_ORPHANS_PER_BLOCK - 1)) / F2FS_ORPHANS_PER_BLOCK);
> + struct page *page = NULL;
> + struct page *pages[orphan_blocks];
> struct orphan_inode_entry *orphan = NULL;
>
> - orphan_blocks = (unsigned short)((sbi->n_orphans +
> - (F2FS_ORPHANS_PER_BLOCK - 1)) / F2FS_ORPHANS_PER_BLOCK);
> + for (index = 0; index < orphan_blocks; index++)
> + pages[index] = grab_meta_page(sbi, start_blk + index);
>
> + index = 1;
> mutex_lock(&sbi->orphan_inode_mutex);
> head = &sbi->orphan_inode_list;
>
> /* loop for each orphan inode entry and write them in Jornal block */
> list_for_each_entry(orphan, head, list) {
> if (!page) {
> - page = grab_meta_page(sbi, start_blk);
> + page = pages[index - 1];
> orphan_blk =
> (struct f2fs_orphan_block *)page_address(page);
> memset(orphan_blk, 0, sizeof(*orphan_blk));
It seems that we could remove the following code in write_orphan_inodes.
start_blk++;
> --
> 1.7.7
>
>
> ------------------------------------------------------------------------------
> CenturyLink Cloud: The Leader in Enterprise Cloud Services.
> Learn Why More Businesses Are Choosing CenturyLink Cloud For
> Critical Workloads, Development Environments & Everything In Between.
> Get a Quote or Start a Free Trial Today.
> http://pubads.g.doubleclick.net/gampad/clk?id=119420431&iu=/4140/ostg.clktrk
> _______________________________________________
> Linux-f2fs-devel mailing list
> Linux-f2fs-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
------------------------------------------------------------------------------
CenturyLink Cloud: The Leader in Enterprise Cloud Services.
Learn Why More Businesses Are Choosing CenturyLink Cloud For
Critical Workloads, Development Environments & Everything In Between.
Get a Quote or Start a Free Trial Today.
http://pubads.g.doubleclick.net/gampad/clk?id=119420431&iu=/4140/ostg.clktrk
next prev parent reply other threads:[~2014-01-11 1:27 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-10 10:09 [PATCH 1/3] f2fs: move grabing orphan pages out of protection region Gu Zheng
2014-01-11 1:27 ` Chao Yu [this message]
2014-01-13 9:36 ` Gu Zheng
2014-01-13 9:43 ` [f2fs-dev][PATCH V2 1/3] f2fs: move grabbing " Gu Zheng
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='000001cf0e6c$77982430$66c86c90$@samsung.com' \
--to=chao2.yu@samsung.com \
--cc=guz.fnst@cn.fujitsu.com \
--cc=jaegeuk.kim@samsung.com \
--cc=linux-f2fs-devel@lists.sourceforge.net \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).