[Gluster-devel] readdir() harmful in threaded code

[Emmanuel Dreyfus]

Pranith Kumar Karampuri <pkarampu at redhat.com> wrote:

> So should we do readdir() with external locks for everything instead?

readdir() with a per-directory lock is safe. However, it may come with a
performance hit in some scenarios, since two threads cannot read the
same directory at once. But I am not sure it can happen in GlusterFS.

I am a bit disturbed by readdir_r() being planned for deprecation. The
Open Group does not say that, or I missed it:
http://pubs.opengroup.org/onlinepubs/9699919799/functions/readdir.html

-- 
Emmanuel Dreyfus
http://hcpnet.free.fr/pubz
manu at netbsd.org