tree 5e5da8ae521dc675775ee65f0964121a5d752d26
parent 76429f1dedbc1815d875c9b68eefd30c95cb8fa9
author Jeff Layton <jlayton@redhat.com> 1395843863 -0700
committer Steve French <smfrench@gmail.com> 1398397023 -0500

cifs: fix actimeo=0 corner case when cifs_i->time == jiffies

actimeo=0 is supposed to be a special case that ensures that inode
attributes are always refetched from the server instead of trusting the
cache. The cifs code however uses time_in_range() to determine whether
the attributes have timed out. In the case where cifs_i->time equals
jiffies, this leads to the cifs code not refetching the inode attributes
when it should.

Fix this by explicitly testing for actimeo=0, and handling it as a
special case.

Reported-and-tested-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>