summaryrefslogtreecommitdiff
path: root/fs/nfsd/nfsfh.h
diff options
context:
space:
mode:
authorJ. Bruce Fields <bfields@redhat.com>2021-01-29 14:26:29 -0500
committerChuck Lever <chuck.lever@oracle.com>2021-01-30 11:47:12 -0500
commit3cc55f4434b421d37300aa9a167ace7d60b45ccf (patch)
tree636aefebdee4ea18f32c2892d953120b38151694 /fs/nfsd/nfsfh.h
parent02591f9febd5f69bb4c266a4abf899c4cf21964f (diff)
nfs: use change attribute for NFS re-exports
When exporting NFS, we may as well use the real change attribute returned by the original server instead of faking up a change attribute from the ctime. Note we can't do that by setting I_VERSION--that would also turn on the logic in iversion.h which treats the lower bit specially, and that doesn't make sense for NFS. So instead we define a new export operation for filesystems like NFS that want to manage the change attribute themselves. Signed-off-by: J. Bruce Fields <bfields@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'fs/nfsd/nfsfh.h')
-rw-r--r--fs/nfsd/nfsfh.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/nfsd/nfsfh.h b/fs/nfsd/nfsfh.h
index cb20c2cd3469..f58933519f38 100644
--- a/fs/nfsd/nfsfh.h
+++ b/fs/nfsd/nfsfh.h
@@ -12,6 +12,7 @@
#include <linux/sunrpc/svc.h>
#include <uapi/linux/nfsd/nfsfh.h>
#include <linux/iversion.h>
+#include <linux/exportfs.h>
static inline __u32 ino_t_to_u32(ino_t ino)
{
@@ -264,7 +265,9 @@ fh_clear_wcc(struct svc_fh *fhp)
static inline u64 nfsd4_change_attribute(struct kstat *stat,
struct inode *inode)
{
- if (IS_I_VERSION(inode)) {
+ if (inode->i_sb->s_export_op->fetch_iversion)
+ return inode->i_sb->s_export_op->fetch_iversion(inode);
+ else if (IS_I_VERSION(inode)) {
u64 chattr;
chattr = stat->ctime.tv_sec;