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nfsd4: add a separate (lockowner, inode) lookup

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Address the possible performance regression mentioned in "nfsd4: hash
lockowners to simplify RELEASE_LOCKOWNER" by providing a separate
(lockowner, inode) hash.

Really, I doubt this matters much, but I think it's likely we'll change
these data structures here and I'd rather that the need for (owner,
inode) lookups be well-documented.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
J. Bruce Fields 2011-11-07 17:40:10 -05:00
parent 353de31b86
commit 009673b439
2 changed files with 24 additions and 6 deletions
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fs/nfsd/state.h
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@ -366,6 +366,7 @@ struct nfs4_openowner {
struct nfs4_lockowner {
struct nfs4_stateowner lo_owner; /* must be first element */
struct list_head lo_owner_ino_hash; /* hash by owner,file */
struct list_head lo_perstateid; /* for lockowners only */
struct list_head lo_list; /* for temporary uses */
};