From: "J. Bruce Fields" <bfields@xxxxxxxxxx>
Minor cleanup, no change in behavior.
Also pull out a common helper that'll be useful elsewhere.
Signed-off-by: J. Bruce Fields <bfields@xxxxxxxxxx>
---
fs/nfsd/nfsfh.h | 13 +++++--------
include/linux/iversion.h | 13 +++++++++++++
2 files changed, 18 insertions(+), 8 deletions(-)
diff --git a/fs/nfsd/nfsfh.h b/fs/nfsd/nfsfh.h
index 3faf5974fa4e..45bd776290d5 100644
--- a/fs/nfsd/nfsfh.h
+++ b/fs/nfsd/nfsfh.h
@@ -259,19 +259,16 @@ fh_clear_wcc(struct svc_fh *fhp)
static inline u64 nfsd4_change_attribute(struct kstat *stat,
struct inode *inode)
{
- u64 chattr;
-
if (IS_I_VERSION(inode)) {
+ u64 chattr;
+
chattr = stat->ctime.tv_sec;
chattr <<= 30;
chattr += stat->ctime.tv_nsec;
chattr += inode_query_iversion(inode);
- } else {
- chattr = cpu_to_be32(stat->ctime.tv_sec);
- chattr <<= 32;
- chattr += cpu_to_be32(stat->ctime.tv_nsec);
- }
- return chattr;
+ return chattr;
+ } else
+ return time_to_chattr(&stat->ctime);
}
extern void fill_pre_wcc(struct svc_fh *fhp);
diff --git a/include/linux/iversion.h b/include/linux/iversion.h
index 2917ef990d43..3bfebde5a1a6 100644
--- a/include/linux/iversion.h
+++ b/include/linux/iversion.h
@@ -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
--
2.28.0
