tree 1c747cfabf33c6c9ad56811fabd22285816fc27a
parent 46f72b349290d2bd7aecea38f02609d814332df6
author Sage Weil <sage@newdream.net> 1326215575 -0800
committer Sage Weil <sage@newdream.net> 1326394840 -0800

ceph: enable/disable dentry complete flags via mount option

Enable/disable use of the dentry dir 'complete' flag via a mount option.
This lets the admin control whether ceph uses the dcache to satisfy
negative lookups or readdir when it has the entire directory contents in
its cache.

This is purely a performance optimization; correctness is guaranteed
whether it is enabled or not.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sage Weil <sage@newdream.net>