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nfsd: minor nfsd4_change_attribute cleanup

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Minor cleanup, no change in behavior.

Also pull out a common helper that'll be useful elsewhere.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
J. Bruce Fields
2020-11-30 17:46:16 -05:00
committed by Chuck Lever
parent b2140338d8
commit 4b03d99794
2 changed files with 18 additions and 8 deletions
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13
include/linux/iversion.h
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@@ -328,6 +328,19 @@ inode_query_iversion(struct inode *inode)
return cur >> I_VERSION_QUERIED_SHIFT;
}
/*
* For filesystems without any sort of change attribute, the best we can
* do is fake one up from the ctime:
*/
static inline u64 time_to_chattr(struct timespec64 *t)
{
u64 chattr = t->tv_sec;
chattr <<= 32;
chattr += t->tv_nsec;
return chattr;
}
/**
* inode_eq_iversion_raw - check whether the raw i_version counter has changed
* @inode: inode to check