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-wv0g5CoUfT@https.bugzilla.kernel.org/>
Date:   Sat, 13 Jan 2018 19:49:16 +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

Josh Johnston (josh.johnston@...mail.com) changed:

           What    |Removed                     |Added
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                 CC|                            |josh.johnston@...mail.com

--- Comment #2 from Josh Johnston (josh.johnston@...mail.com) ---
Created attachment 273589
  --> https://bugzilla.kernel.org/attachment.cgi?id=273589&action=edit
Proposed patch

Here's a proposed patch.  When the symlink's path length is longer than a
block, it uses the existing code to fall back on a slow symlink.  This is the
better behavior, rather than throwing an error.

Block size should only be a limitation on the path if using a fast symlink,
which includes the path in the inode.  More info on fast/slow symlinks at:

https://unix.stackexchange.com/questoins/147535/fast-and-slow-symlinks

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