NFSD: Instrument fh_verify()
[ Upstream commit 05138288 ] Capture file handles and how they map to local inodes. In particular, NFSv4 PUTFH uses fh_verify() so we can now observe which file handles are the target of OPEN, LOOKUP, RENAME, and so on. Signed-off-by:Chuck Lever <chuck.lever@oracle.com>
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