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nfsd: update create verifier comment

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[ Upstream commit 2336d696862186fd4a6ddd1ea0cb243b3e32847c ]

I don't know if that Solaris behavior matters any more or if it's still
possible to look up that bug ID any more.  The XFS behavior's definitely
still relevant, though; any but the most recent XFS filesystems will
lose the top bits.

Reported-by: Frank S. Filz <ffilzlnx@mindspring.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
J. Bruce Fields 2021-10-15 14:42:11 -04:00 committed by Ksawlii
parent a90593a639
commit 39e2c3b956
1 changed files with 2 additions and 1 deletions
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fs/nfsd/vfs.c
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@ -1430,7 +1430,8 @@ do_nfsd_create(struct svc_rqst *rqstp, struct svc_fh *fhp,
if (nfsd_create_is_exclusive(createmode)) {
/* solaris7 gets confused (bugid 4218508) if these have
* the high bit set, so just clear the high bits. If this is
* the high bit set, as do xfs filesystems without the
* "bigtime" feature. So just clear the high bits. If this is
* ever changed to use different attrs for storing the
* verifier, then do_open_lookup() will also need to be fixed
* accordingly.