linux-ext4 - [Bug 196405] mkdir mishandles st_nlink in ext4 directory with 64997 subdirectories

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Message-ID: <bug-196405-13602-40I469j7hL@https.bugzilla.kernel.org/>
Date:   Wed, 19 Jul 2017 08:02:25 +0000
From:   bugzilla-daemon@...zilla.kernel.org
To:     linux-ext4@...nel.org
Subject: [Bug 196405] mkdir mishandles st_nlink in ext4 directory with 64997
 subdirectories

https://bugzilla.kernel.org/show_bug.cgi?id=196405

--- Comment #10 from Paul Eggert (eggert@...ucla.edu) ---
(In reply to Andreas Dilger from comment #9)
> while the "ftsfind.c"
> code does not check nlinks directly (presumably that is done in fts), the
> "oldfind.c::process_dir()" code has a check if st_nlink < 2

Sure, but (as its name suggest) oldfind.c is obsolete and is no longer used.
The mainline 'find' code does not have a special case for st_nlink < 2, and
works only by accident.

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