lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date:	Tue, 15 Sep 2009 17:57:24 +0800
From:	Zhang Huan <zhhuan@...il.com>
To:	linux-ext4@...r.kernel.org
Subject: Question on readdir implementation

Hi all,

I'm reading EXT4 codes and has some questions about readdir
implementation.

Why traverse the directory in hash order? This brings lots of code to
build and traverse a red-black tree. Why not just plainly traverse the
directory's blocks?

Since the red-black tree is built every time a NFS readdir request comes
in, in case of hash collision, the nfs client may receive duplicate dir
entries if the buffer is not large enough to return all entries with the
same hash value in once.

Thanks.

-- 
Zhang Huan
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Powered by blists - more mailing lists