linux-kernel - Re: [f2fs-dev] [PATCH v3 1/1] f2fs: fix args passed to trace_f2fs_lookup

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Message-Id: <168615902527.7521.505890454109723802.git-patchwork-notify@kernel.org>
Date:   Wed, 07 Jun 2023 17:30:25 +0000
From:   patchwork-bot+f2fs@...nel.org
To:     Wu Bo <bo.wu@...o.com>
Cc:     jaegeuk@...nel.org, chao@...nel.org, wubo.oduw@...il.com,
        linux-kernel@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net
Subject: Re: [f2fs-dev] [PATCH v3 1/1] f2fs: fix args passed to
 trace_f2fs_lookup_end

Hello:

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

On Thu,  1 Jun 2023 09:37:59 +0800 you wrote:
> The NULL return of 'd_splice_alias' dosen't mean error. Thus the
> successful case will also return NULL, which makes the tracepoint always
> print 'err=-ENOENT'.
> 
> And the different cases of 'new' & 'err' are list as following:
> 1) dentry exists: err(0) with new(NULL) --> dentry, err=0
> 2) dentry exists: err(0) with new(VALID) --> new, err=0
> 3) dentry exists: err(0) with new(ERR) --> dentry, err=ERR
> 4) no dentry exists: err(-ENOENT) with new(NULL) --> dentry, err=-ENOENT
> 5) no dentry exists: err(-ENOENT) with new(VALID) --> new, err=-ENOENT
> 6) no dentry exists: err(-ENOENT) with new(ERR) --> dentry, err=ERR
> 
> [...]

Here is the summary with links:
  - [f2fs-dev,v3,1/1] f2fs: fix args passed to trace_f2fs_lookup_end
    https://git.kernel.org/jaegeuk/f2fs/c/fddd7d0466ae

You are awesome, thank you!
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