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From: "Sungjong Seo" <sj1557.seo@samsung.com>
To: "'Namjae Jeon'" <linkinjeon@kernel.org>, "'Al Viro'"
	<viro@zeniv.linux.org.uk>
Cc: <linux-fsdevel@vger.kernel.org>, <sj1557.seo@samsung.com>,
	<sjdev.seo@gmail.com>
In-Reply-To: <394ca686-a45a-e71c-bc45-33794463b5fc@samsung.com>
Subject: RE: [RFC] weird stuff in exfat_lookup()
Date: Thu, 13 Mar 2025 21:39:39 +0900
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References: <20250227224826.GG2023217@ZenIV>
	<CAKYAXd_-v601SX44WZ970LyZjsCH3L3HFjJXxZH960r1PXo+Bw@mail.gmail.com>
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Hello,
> Hello? This is Sungjong. Currently, I am unable to reply using my
> samsung.com email, so I am responding with my other Gmail account.
>=20
> On 2/28/25 14:44, Namjae Jeon wrote:
> > On Fri, Feb 28, 2025 at 7:48=E2=80=AFAM=20Al=20Viro=20<viro=40zeniv.lin=
ux.org.uk>=20wrote:=0D=0A>=20>>=0D=0A>=20>>=20=20=20=20=20=20=20=20=20There=
's=20a=20really=20odd=20comment=20in=20that=20thing:=0D=0A>=20>>=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20/*=0D=0A>=20>>=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20*=20Unhashed=20alias=20is=20able=20to=
=20exist=20because=20of=20revalidate()=0D=0A>=20>>=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20*=20called=20by=20lookup_fast.=20You=20can=20=
easily=20make=20this=20status=0D=0A>=20>>=20=20=20=20=20=20=20=20=20=20=20=
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=0A>=20>>=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20*/=0D=0A>=20=
>>=20and=20AFAICS=20it=20had=20been=20there=20since=20the=20original=20merg=
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d=20you=20give=20details?=0D=0A=0D=0AI=20tested=20it=20on=20an=20arm64=20de=
vice=20running=20on=20Android=20with=20kernel=20v5.15,=20v6.6.=0D=0AAnd=20I=
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A)=20and=20rmdir(A)=20=7D=0D=0A-=20thread2:=20while(1)=20=7B=20stat(A)=20=
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allowing=20negative=20dentry=20and=0D=0Aconsidering=20CI=20in=20d_revalidat=
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