fs: Replace CURRENT_TIME with current_time() for inode timestamps

CURRENT_TIME macro is not appropriate for filesystems as it
doesn't use the right granularity for filesystem timestamps.
Use current_time() instead.

CURRENT_TIME is also not y2038 safe.

This is also in preparation for the patch that transitions
vfs timestamps to use 64 bit time and hence make them
y2038 safe. As part of the effort current_time() will be
extended to do range checks. Hence, it is necessary for all
file system timestamps to use current_time(). Also,
current_time() will be transitioned along with vfs to be
y2038 safe.

Note that whenever a single call to current_time() is used
to change timestamps in different inodes, it is because they
share the same time granularity.

Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Felipe Balbi <balbi@kernel.org>
Acked-by: Steven Whitehouse <swhiteho@redhat.com>
Acked-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Acked-by: David Sterba <dsterba@suse.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

3 files changed, 8 insertions, 8 deletions

diff --git a/fs/exofs/dir.c b/fs/exofs/dir.c
index f69a1b5..79101651 100644
--- a/fs/exofs/dir.c
+++ b/fs/exofs/dir.c
@@ -416,7 +416,7 @@ int exofs_set_link(struct inode *dir, struct exofs_dir_entry *de,
 	if (likely(!err))
 		err = exofs_commit_chunk(page, pos, len);
 	exofs_put_page(page);
-	dir->i_mtime = dir->i_ctime = CURRENT_TIME;
+	dir->i_mtime = dir->i_ctime = current_time(dir);
 	mark_inode_dirty(dir);
 	return err;
 }
@@ -503,7 +503,7 @@ got_it:
 	de->inode_no = cpu_to_le64(inode->i_ino);
 	exofs_set_de_type(de, inode);
 	err = exofs_commit_chunk(page, pos, rec_len);
-	dir->i_mtime = dir->i_ctime = CURRENT_TIME;
+	dir->i_mtime = dir->i_ctime = current_time(dir);
 	mark_inode_dirty(dir);
 	sbi->s_numfiles++;
 
@@ -554,7 +554,7 @@ int exofs_delete_entry(struct exofs_dir_entry *dir, struct page *page)
 	dir->inode_no = 0;
 	if (likely(!err))
 		err = exofs_commit_chunk(page, pos, to - from);
-	inode->i_ctime = inode->i_mtime = CURRENT_TIME;
+	inode->i_ctime = inode->i_mtime = current_time(inode);
 	mark_inode_dirty(inode);
 	sbi->s_numfiles--;
 out:
diff --git a/fs/exofs/inode.c b/fs/exofs/inode.c
index 9dc4c6d..4327f71 100644
--- a/fs/exofs/inode.c
+++ b/fs/exofs/inode.c
@@ -1007,7 +1007,7 @@ static int _do_truncate(struct inode *inode, loff_t newsize)
 	struct exofs_sb_info *sbi = inode->i_sb->s_fs_info;
 	int ret;
 
-	inode->i_mtime = inode->i_ctime = CURRENT_TIME;
+	inode->i_mtime = inode->i_ctime = current_time(inode);
 
 	ret = ore_truncate(&sbi->layout, &oi->oc, (u64)newsize);
 	if (likely(!ret))
@@ -1313,7 +1313,7 @@ struct inode *exofs_new_inode(struct inode *dir, umode_t mode)
 	inode_init_owner(inode, dir, mode);
 	inode->i_ino = sbi->s_nextid++;
 	inode->i_blkbits = EXOFS_BLKSHIFT;
-	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
+	inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
 	oi->i_commit_size = inode->i_size = 0;
 	spin_lock(&sbi->s_next_gen_lock);
 	inode->i_generation = sbi->s_next_generation++;
diff --git a/fs/exofs/namei.c b/fs/exofs/namei.c
index 622a686..80c8114 100644
--- a/fs/exofs/namei.c
+++ b/fs/exofs/namei.c
@@ -142,7 +142,7 @@ static int exofs_link(struct dentry *old_dentry, struct inode *dir,
 {
 	struct inode *inode = d_inode(old_dentry);
 
-	inode->i_ctime = CURRENT_TIME;
+	inode->i_ctime = current_time(inode);
 	inode_inc_link_count(inode);
 	ihold(inode);
 
@@ -261,7 +261,7 @@ static int exofs_rename(struct inode *old_dir, struct dentry *old_dentry,
 		if (!new_de)
 			goto out_dir;
 		err = exofs_set_link(new_dir, new_de, new_page, old_inode);
-		new_inode->i_ctime = CURRENT_TIME;
+		new_inode->i_ctime = current_time(new_inode);
 		if (dir_de)
 			drop_nlink(new_inode);
 		inode_dec_link_count(new_inode);
@@ -275,7 +275,7 @@ static int exofs_rename(struct inode *old_dir, struct dentry *old_dentry,
 			inode_inc_link_count(new_dir);
 	}
 
-	old_inode->i_ctime = CURRENT_TIME;
+	old_inode->i_ctime = current_time(old_inode);
 
 	exofs_delete_entry(old_de, old_page);
 	mark_inode_dirty(old_inode);