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

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Message-ID: <bug-196405-13602-EtZ6BxMNwM@https.bugzilla.kernel.org/>
Date:   Wed, 19 Jul 2017 05:35:21 +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 #9 from Andreas Dilger (adilger.kernelbugzilla@...ger.ca) ---
I took a look at the find code at
http://git.savannah.gnu.org/cgit/findutils.git and 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 to disable the
"subdirs" heuristic.

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