linux-ext4 - [Bug 198301] ext4 fails to create symlink if target length is greater than block size (but smaller than PATH

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Message-ID: <bug-198301-13602-LURnW0LddS@https.bugzilla.kernel.org/>
Date:   Sat, 13 Jan 2018 23:22:09 +0000
From:   bugzilla-daemon@...zilla.kernel.org
To:     linux-ext4@...nel.org
Subject: [Bug 198301] ext4 fails to create symlink if target length is
 greater than block size (but smaller than PATH_MAX)

https://bugzilla.kernel.org/show_bug.cgi?id=198301

Andreas Dilger (adilger.kernelbugzilla@...ger.ca) changed:

           What    |Removed                     |Added
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                 CC|                            |adilger.kernelbugzilla@...g
                   |                            |er.ca

--- Comment #3 from Andreas Dilger (adilger.kernelbugzilla@...ger.ca) ---
Hi Josh, did you actually test if this patch works with a symlink longer than a
single block?  

The existing slow symlink code is only written to handle a single block, so
just removing the check doesn't fix that. There would also need to be a new
INCOMPATIBLE feature flag added, so that the kernel and e2fsck know that there
are symlink a longer than a single block. Otherwise they would consider the
link corrupted.

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