From: Sahitya Tummala <stummala@codeaurora.org>
To: Jaegeuk Kim <jaegeuk@kernel.org>
Cc: Chao Yu <yuchao0@huawei.com>,
linux-f2fs-devel@lists.sourceforge.net,
linux-kernel@vger.kernel.org, stummala@codeaurora.org
Subject: Re: [PATCH] f2fs: prevent meta updates while checkpoint is in progress
Date: Tue, 31 Mar 2020 14:36:08 +0530 [thread overview]
Message-ID: <20200331090608.GZ20234@codeaurora.org> (raw)
In-Reply-To: <20200331035419.GB79749@google.com>
On Mon, Mar 30, 2020 at 08:54:19PM -0700, Jaegeuk Kim wrote:
> On 03/26, Sahitya Tummala wrote:
> > allocate_segment_for_resize() can cause metapage updates if
> > it requires to change the current node/data segments for resizing.
> > Stop these meta updates when there is a checkpoint already
> > in progress to prevent inconsistent CP data.
>
> I'd prefer to use f2fs_lock_op() in bigger coverage.
Do you mean to cover the entire free_segment_range() function within
f2fs_lock_op()? Please clarify.
Thanks,
>
> >
> > Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
> > ---
> > fs/f2fs/gc.c | 2 ++
> > 1 file changed, 2 insertions(+)
> >
> > diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
> > index 5bca560..6122bad 100644
> > --- a/fs/f2fs/gc.c
> > +++ b/fs/f2fs/gc.c
> > @@ -1399,8 +1399,10 @@ static int free_segment_range(struct f2fs_sb_info *sbi, unsigned int start,
> > int err = 0;
> >
> > /* Move out cursegs from the target range */
> > + f2fs_lock_op(sbi);
> > for (type = CURSEG_HOT_DATA; type < NR_CURSEG_TYPE; type++)
> > allocate_segment_for_resize(sbi, type, start, end);
> > + f2fs_unlock_op(sbi);
> >
> > /* do GC to move out valid blocks in the range */
> > for (segno = start; segno <= end; segno += sbi->segs_per_sec) {
> > --
> > Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc.
> > Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.
--
--
Sent by a consultant of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.
next prev parent reply other threads:[~2020-03-31 9:06 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-26 10:36 [PATCH] f2fs: prevent meta updates while checkpoint is in progress Sahitya Tummala
2020-03-27 19:24 ` Jaegeuk Kim
2020-03-28 8:38 ` Chao Yu
2020-03-30 8:40 ` Sahitya Tummala
2020-03-30 18:34 ` Jaegeuk Kim
2020-03-31 0:58 ` Chao Yu
2020-03-31 3:54 ` Jaegeuk Kim
2020-03-31 9:06 ` Sahitya Tummala [this message]
2020-03-31 18:43 ` Jaegeuk Kim
2020-04-01 2:54 ` Chao Yu
2020-04-03 16:20 ` Jaegeuk Kim
2020-04-01 5:08 ` Sahitya Tummala
2020-04-03 17:17 ` Jaegeuk Kim
2020-04-03 17:27 ` [f2fs-dev] " Jaegeuk Kim
2020-04-07 2:34 ` Chao Yu
2020-04-07 2:58 ` Jaegeuk Kim
2020-04-07 3:21 ` Chao Yu
2020-04-09 2:25 ` Jaegeuk Kim
2020-04-13 17:42 ` Jaegeuk Kim
2020-04-14 9:58 ` Sahitya Tummala
2020-04-14 11:44 ` Chao Yu
2020-04-14 13:44 ` Jaegeuk Kim
2020-04-16 7:04 ` Chao Yu
2020-04-16 21:40 ` Jaegeuk Kim
2020-04-17 7:26 ` Chao Yu
2020-04-17 16:15 ` Jaegeuk Kim
2020-04-20 11:37 ` Sahitya Tummala
2020-04-20 15:52 ` Jaegeuk Kim
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