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authorIan Kent <raven@themaw.net>2012-05-02 07:19:09 -0400
committerSteve French <sfrench@us.ibm.com>2012-05-03 13:49:47 -0500
commit936ad9094462578953042d3395b973f1c9e6fa95 (patch)
tree22d52c9a2489768a9d70d95ef1a99c78185698c3 /kernel/signal.c
parent58fa015f611b51e1f501b048bc5ac263c78852f0 (diff)
cifs - check S_AUTOMOUNT in revalidate
When revalidating a dentry, if the inode wasn't known to be a dfs entry when the dentry was instantiated, such as when created via ->readdir(), the DCACHE_NEED_AUTOMOUNT flag needs to be set on the dentry in ->d_revalidate(). The false return from cifs_d_revalidate(), due to the inode now being marked with the S_AUTOMOUNT flag, might not invalidate the dentry if there is a concurrent unlazy path walk. This is because the dentry reference count will be at least 2 in this case causing d_invalidate() to return EBUSY. So the asumption that the dentry will be discarded then correctly instantiated via ->lookup() might not hold. Signed-off-by: Ian Kent <raven@themaw.net> Reviewed-by: Jeff Layton <jlayton@redhat.com> Cc: Steve French <smfrench@gmail.com> Cc: linux-cifs@vger.kernel.org Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'kernel/signal.c')
0 files changed, 0 insertions, 0 deletions