Merge tag 'vfs-timespec64' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground

Pull inode timestamps conversion to timespec64 from Arnd Bergmann:
 "This is a late set of changes from Deepa Dinamani doing an automated
  treewide conversion of the inode and iattr structures from 'timespec'
  to 'timespec64', to push the conversion from the VFS layer into the
  individual file systems.

  As Deepa writes:

   'The series aims to switch vfs timestamps to use struct timespec64.
    Currently vfs uses struct timespec, which is not y2038 safe.

    The series involves the following:
    1. Add vfs helper functions for supporting struct timepec64
       timestamps.
    2. Cast prints of vfs timestamps to avoid warnings after the switch.
    3. Simplify code using vfs timestamps so that the actual replacement
       becomes easy.
    4. Convert vfs timestamps to use struct timespec64 using a script.
       This is a flag day patch.

    Next steps:
    1. Convert APIs that can handle timespec64, instead of converting
       timestamps at the boundaries.
    2. Update internal data structures to avoid timestamp conversions'

  Thomas Gleixner adds:

   'I think there is no point to drag that out for the next merge
    window. The whole thing needs to be done in one go for the core
    changes which means that you're going to play that catchup game
    forever. Let's get over with it towards the end of the merge window'"

* tag 'vfs-timespec64' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground:
  pstore: Remove bogus format string definition
  vfs: change inode times to use struct timespec64
  pstore: Convert internal records to timespec64
  udf: Simplify calls to udf_disk_stamp_to_time
  fs: nfs: get rid of memcpys for inode times
  ceph: make inode time prints to be long long
  lustre: Use long long type to print inode time
  fs: add timespec64_truncate()

1 files changed, 12 insertions, 11 deletions

diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
index 28b80713a163..fd7eb6fe9090 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -1089,14 +1089,14 @@ static void do_attr_changes(struct inode *inode, const struct iattr *attr)
 	if (attr->ia_valid & ATTR_GID)
 		inode->i_gid = attr->ia_gid;
 	if (attr->ia_valid & ATTR_ATIME)
-		inode->i_atime = timespec_trunc(attr->ia_atime,
-						inode->i_sb->s_time_gran);
+		inode->i_atime = timespec64_trunc(attr->ia_atime,
+						  inode->i_sb->s_time_gran);
 	if (attr->ia_valid & ATTR_MTIME)
-		inode->i_mtime = timespec_trunc(attr->ia_mtime,
-						inode->i_sb->s_time_gran);
+		inode->i_mtime = timespec64_trunc(attr->ia_mtime,
+						  inode->i_sb->s_time_gran);
 	if (attr->ia_valid & ATTR_CTIME)
-		inode->i_ctime = timespec_trunc(attr->ia_ctime,
-						inode->i_sb->s_time_gran);
+		inode->i_ctime = timespec64_trunc(attr->ia_ctime,
+						  inode->i_sb->s_time_gran);
 	if (attr->ia_valid & ATTR_MODE) {
 		umode_t mode = attr->ia_mode;
 
@@ -1367,8 +1367,9 @@ out:
 static inline int mctime_update_needed(const struct inode *inode,
 				       const struct timespec *now)
 {
-	if (!timespec_equal(&inode->i_mtime, now) ||
-	    !timespec_equal(&inode->i_ctime, now))
+	struct timespec64 now64 = timespec_to_timespec64(*now);
+	if (!timespec64_equal(&inode->i_mtime, &now64) ||
+	    !timespec64_equal(&inode->i_ctime, &now64))
 		return 1;
 	return 0;
 }
@@ -1380,7 +1381,7 @@ static inline int mctime_update_needed(const struct inode *inode,
  *
  * This function updates time of the inode.
  */
-int ubifs_update_time(struct inode *inode, struct timespec *time,
+int ubifs_update_time(struct inode *inode, struct timespec64 *time,
 			     int flags)
 {
 	struct ubifs_inode *ui = ubifs_inode(inode);
@@ -1424,7 +1425,7 @@ int ubifs_update_time(struct inode *inode, struct timespec *time,
  */
 static int update_mctime(struct inode *inode)
 {
-	struct timespec now = current_time(inode);
+	struct timespec now = timespec64_to_timespec(current_time(inode));
 	struct ubifs_inode *ui = ubifs_inode(inode);
 	struct ubifs_info *c = inode->i_sb->s_fs_info;
 
@@ -1518,7 +1519,7 @@ static vm_fault_t ubifs_vm_page_mkwrite(struct vm_fault *vmf)
 	struct page *page = vmf->page;
 	struct inode *inode = file_inode(vmf->vma->vm_file);
 	struct ubifs_info *c = inode->i_sb->s_fs_info;
-	struct timespec now = current_time(inode);
+	struct timespec now = timespec64_to_timespec(current_time(inode));
 	struct ubifs_budget_req req = { .new_page = 1 };
 	int err, update_time;