linux-kernel - [GIT PULL] erofs fix for 6.19-rc5

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Message-ID: <aWHibOkAT18Hc/G5@debian>
Date: Sat, 10 Jan 2026 13:23:56 +0800
From: Gao Xiang <xiang@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-erofs@...ts.ozlabs.org, LKML <linux-kernel@...r.kernel.org>,
	Amir Goldstein <amir73il@...il.com>,
	Alexander Larsson <alexl@...hat.com>,
	Dusty Mabe <dusty@...tymabe.com>, Chao Yu <chao@...nel.org>,
	Sheng Yong <shengyong1@...omi.com>,
	Zhiguo Niu <zhiguo.niu@...soc.com>,
	Christian Brauner <brauner@...nel.org>,
	Miklos Szeredi <mszeredi@...hat.com>
Subject: [GIT PULL] erofs fix for 6.19-rc5

Hi Linus,

Could you consider this urgent fix for 6.19-rc5?

Actually upstream commit d53cd891f0e4 ("erofs: limit the level of fs
stacking for file-backed mounts") causes composefs regressions since
EROFS + ovl^2 cannot be mounted properly anymore and we all agree to
land this band-aid fix as the first step.

The more backgound details are shown in the commit message.

Thanks,
Gao Xiang

The following changes since commit f8f9c1f4d0c7a64600e2ca312dec824a0bc2f1da:

  Linux 6.19-rc3 (2025-12-28 13:24:26 -0800)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git tags/erofs-for-6.19-rc5-fixes

for you to fetch changes up to 072a7c7cdbea4f91df854ee2bb216256cd619f2a:

  erofs: don't bother with s_stack_depth increasing for now (2026-01-10 13:01:15 +0800)

----------------------------------------------------------------
Change since last update:

 - Don't bother with s_stack_depth increasing to band-aid
   regressions in some composefs mount setups (EROFS + ovl^2)

----------------------------------------------------------------
Gao Xiang (1):
      erofs: don't bother with s_stack_depth increasing for now

 fs/erofs/super.c | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)