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knfsd: nfsd4: don't delegate files that have had conflicts

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One more incremental delegation policy improvement: don't give out a
delegation on a file if conflicting access has previously required that a
delegation be revoked on that file.  (In practice we'll forget about the
conflict when the struct nfs4_file is removed on close, so this is of limited
use for now, though it should at least solve a temporary problem with
self-conflicts on write opens from the same client.)

Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Meelap Shah 2007-07-17 04:04:40 -07:00 • committed by Linus Torvalds
parent c2f1a551de
commit 47f9940c55
2 changed files with 5 additions and 0 deletions
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1
include/linux/nfsd/state.h
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@ -224,6 +224,7 @@ struct nfs4_file {
struct inode *fi_inode;
u32 fi_id; /* used with stateowner->so_id
* for stateid_hashtbl hash */
bool fi_had_conflict;
};
/*