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| author | Ian Kent <raven@themaw.net> | 2012-05-02 13:19:09 +0200 |
|---|---|---|
| committer | Steve French <sfrench@us.ibm.com> | 2012-05-03 20:49:47 +0200 |
| commit | 936ad9094462578953042d3395b973f1c9e6fa95 (patch) | |
| tree | 22d52c9a2489768a9d70d95ef1a99c78185698c3 /CREDITS | |
| parent | cifs: add missing initialization of server->req_lock (diff) | |
| download | linux-936ad9094462578953042d3395b973f1c9e6fa95.tar.xz linux-936ad9094462578953042d3395b973f1c9e6fa95.zip | |
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 'CREDITS')
0 files changed, 0 insertions, 0 deletions