linux-kernel - Re: [f2fs-dev] [PATCH] f2fs: fix to avoid running out of free segments

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Message-Id: 
 <174179283306.831874.2260893071160537539.git-patchwork-notify@kernel.org>
Date: Wed, 12 Mar 2025 15:20:33 +0000
From: patchwork-bot+f2fs@...nel.org
To: Chao Yu <chao@...nel.org>
Cc: jaegeuk@...nel.org, linux-kernel@...r.kernel.org,
 linux-f2fs-devel@...ts.sourceforge.net
Subject: Re: [f2fs-dev] [PATCH] f2fs: fix to avoid running out of free segments

Hello:

This patch was applied to jaegeuk/f2fs.git (dev)
by Jaegeuk Kim <jaegeuk@...nel.org>:

On Wed, 12 Mar 2025 17:01:25 +0800 you wrote:
> If checkpoint is disabled, GC can not reclaim any segments, we need
> to detect such condition and bail out from fallocate() of a pinfile,
> rather than letting allocator running out of free segment, which may
> cause f2fs to be shutdown.
> 
> reproducer:
> mkfs.f2fs -f /dev/vda 16777216
> mount -o checkpoint=disable:10% /dev/vda /mnt/f2fs
> for ((i=0;i<4096;i++)) do { dd if=/dev/zero of=/mnt/f2fs/$i bs=1M count=1; } done
> sync
> for ((i=0;i<4096;i+=2)) do { rm /mnt/f2fs/$i; } done
> sync
> touch /mnt/f2fs/pinfile
> f2fs_io pinfile set /mnt/f2fs/pinfile
> f2fs_io fallocate 0 0 4201644032 /mnt/f2fs/pinfile
> 
> [...]

Here is the summary with links:
  - [f2fs-dev] f2fs: fix to avoid running out of free segments
    https://git.kernel.org/jaegeuk/f2fs/c/f7f8932ca6bb

You are awesome, thank you!
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