From: Yoshihisa Abe <yoshiabe@cs.cmu.edu>
Date: Mon, 25 Oct 2010 06:03:44 +0000 (-0400)
Subject: Coda: add spin lock to protect accesses to struct coda_inode_info.
X-Git-Tag: v2.6.37-rc1~134
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b5ce1d83a62fc109d8e815b1fc71dcdb0d26bc49;p=pandora-kernel.git

Coda: add spin lock to protect accesses to struct coda_inode_info.

We mostly need it to protect cached user permissions. The c_flags field
is advisory, reading the wrong value is harmless and in the worst case
we hit a slow path where we have to make an extra upcall to the
userspace cache manager when revalidating a dentry or inode.

Signed-off-by: Yoshihisa Abe <yoshiabe@cs.cmu.edu>
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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