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authorSage Weil <sage@newdream.net>2011-10-28 17:02:42 (GMT)
committerChristoph Hellwig <hch@serles.lst.de>2011-11-02 11:53:43 (GMT)
commitf0023bc617ba600956b9226f1806033d7486c8ba (patch)
tree7a5ad7481b160e1d40cdc95626bfdb5e8577c88e /drivers/sh
parenta78ef704a8dd430225955f0709b22d4a6ba21deb (diff)
downloadlinux-fsl-qoriq-f0023bc617ba600956b9226f1806033d7486c8ba.tar.xz
vfs: add d_prune dentry operation
This adds a d_prune dentry operation that is called by the VFS prior to pruning (i.e. unhashing and killing) a hashed dentry from the dcache. Wrap dentry_lru_del() and use the new _prune() helper in the cases where we are about to unhash and kill the dentry. This will be used by Ceph to maintain a flag indicating whether the complete contents of a directory are contained in the dcache, allowing it to satisfy lookups and readdir without addition server communication. Renumber a few DCACHE_* #defines to group DCACHE_OP_PRUNE with the other DCACHE_OP_ bits. Signed-off-by: Sage Weil <sage@newdream.net> Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/sh')
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