linux-kernel - Re: [PATCH] Revert "f2fs: stop allocating pinned sections if EAGAIN happens"

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Date: Thu, 8 Feb 2024 16:11:50 +0800
From: Wu Bo <wubo.oduw@...il.com>
To: Chao Yu <chao@...nel.org>, Wu Bo <bo.wu@...o.com>,
 Jaegeuk Kim <jaegeuk@...nel.org>
Cc: linux-f2fs-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org,
 stable@...r.kernel.org
Subject: Re: [PATCH] Revert "f2fs: stop allocating pinned sections if EAGAIN
 happens"

On 2024/2/5 11:54, Chao Yu wrote:
> How about calling f2fs_balance_fs() to double check and make sure 
> there is
> enough free space for following allocation.
>
>         if (has_not_enough_free_secs(sbi, 0,
>             GET_SEC_FROM_SEG(sbi, overprovision_segments(sbi)))) {
>             f2fs_down_write(&sbi->gc_lock);
>             stat_inc_gc_call_count(sbi, FOREGROUND);
>             err = f2fs_gc(sbi, &gc_control);
>             if (err == -EAGAIN)
>                 f2fs_balance_fs(sbi, true);
>             if (err && err != -ENODATA)
>                 goto out_err;
>         }
>
> Thanks,

f2fs_balance_fs() here will not change procedure branch and may just 
trigger another GC.

I'm afraid this is a bit redundant.

>