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Date: Sun, 3 Dec 2017 22:49:37 -0500 From: Theodore Ts'o <tytso@....edu> To: Andreas Dilger <adilger@...ger.ca> Cc: Andi Kleen <andi@...stfloor.org>, linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org, Andi Kleen <ak@...ux.intel.com> Subject: Re: [PATCH] ext4: Support fast symlinks from ext3 file systems On Mon, Nov 27, 2017 at 11:08:53AM -0700, Andreas Dilger wrote: > On Nov 27, 2017, at 10:37 AM, Andi Kleen <andi@...stfloor.org> wrote: > > > > From: Andi Kleen <ak@...ux.intel.com> > > > > dbb3c27f5b91c4 (ext4: change fast symlink test to not rely on i_blocks) > > broke ~10 years old ext3 file systems created by 2.6.17. Any ELF > > executable fails because the /lib/ld-linux.so.2 fast symlink > > cannot be read anymore. > > > > The patch assumed fast symlinks were created in a specific way, > > but that's not true on these really old file systems. > > > > The new behavior is apparently needed only with the large EA inode > > feature. > > > > Revert to the old behavior if the large EA inode feature is not set. > > > > This makes my old VM boot again. > > > > Fixes: dbb3c27f5b91c4 (ext4: change fast symlink test to not rely ...) > > Signed-off-by: Andi Kleen <ak@...ux.intel.com> > > Reviewed-by: Andreas Dilger <adilger@...ger.ca> Thanks, applied. - Ted
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