linux-kernel - [PATCH 2/8] fs: logfs: Replace CURRENT_TIME by current_fs

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Date:	Mon, 22 Feb 2016 07:17:48 -0800
From:	Deepa Dinamani <deepa.kernel@...il.com>
To:	linux-fsdevel@...r.kernel.org, y2038@...ts.linaro.org
Cc:	Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org,
	Joern Engel <joern@...fs.org>,
	Prasad Joshi <prasadjoshi.linux@...il.com>, logfs@...fs.org
Subject: [PATCH 2/8] fs: logfs: Replace CURRENT_TIME by current_fs_time()

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

Signed-off-by: Deepa Dinamani <deepa.kernel@...il.com>
Cc: Joern Engel <joern@...fs.org>
Cc: Prasad Joshi <prasadjoshi.linux@...il.com>
Cc: logfs@...fs.org
---
 fs/logfs/dir.c       | 11 +++++++----
 fs/logfs/file.c      |  2 +-
 fs/logfs/inode.c     |  3 +--
 fs/logfs/readwrite.c |  7 ++++---
 4 files changed, 13 insertions(+), 10 deletions(-)

diff --git a/fs/logfs/dir.c b/fs/logfs/dir.c
index 542468e..3b5f279 100644
--- a/fs/logfs/dir.c
+++ b/fs/logfs/dir.c
@@ -212,7 +212,8 @@ static void abort_transaction(struct inode *inode, struct logfs_transaction *ta)
 
 static int logfs_unlink(struct inode *dir, struct dentry *dentry)
 {
-	struct logfs_super *super = logfs_super(dir->i_sb);
+	struct super_block *sb = dir->i_sb;
+	struct logfs_super *super = logfs_super(sb);
 	struct inode *inode = d_inode(dentry);
 	struct logfs_transaction *ta;
 	struct page *page;
@@ -226,7 +227,8 @@ static int logfs_unlink(struct inode *dir, struct dentry *dentry)
 	ta->state = UNLINK_1;
 	ta->ino = inode->i_ino;
 
-	inode->i_ctime = dir->i_ctime = dir->i_mtime = CURRENT_TIME;
+	inode->i_ctime = dir->i_ctime =
+		dir->i_mtime = current_fs_time(sb);
 
 	page = logfs_get_dd_page(dir, dentry);
 	if (!page) {
@@ -540,7 +542,8 @@ static int logfs_link(struct dentry *old_dentry, struct inode *dir,
 {
 	struct inode *inode = d_inode(old_dentry);
 
-	inode->i_ctime = dir->i_ctime = dir->i_mtime = CURRENT_TIME;
+	inode->i_ctime = dir->i_ctime =
+		dir->i_mtime = current_fs_time(dir->i_sb);
 	ihold(inode);
 	inc_nlink(inode);
 	mark_inode_dirty_sync(inode);
@@ -573,7 +576,7 @@ static int logfs_delete_dd(struct inode *dir, loff_t pos)
 	 * (crc-protected) journal.
 	 */
 	BUG_ON(beyond_eof(dir, pos));
-	dir->i_ctime = dir->i_mtime = CURRENT_TIME;
+	dir->i_ctime = dir->i_mtime = current_fs_time(dir->i_sb);
 	log_dir(" Delete dentry (%lx, %llx)\n", dir->i_ino, pos);
 	return logfs_delete(dir, pos, NULL);
 }
diff --git a/fs/logfs/file.c b/fs/logfs/file.c
index 61eaeb1..339ae40 100644
--- a/fs/logfs/file.c
+++ b/fs/logfs/file.c
@@ -211,7 +211,7 @@ long logfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 		li->li_flags = flags;
 		inode_unlock(inode);
 
-		inode->i_ctime = CURRENT_TIME;
+		inode->i_ctime = current_fs_time(inode->i_sb);
 		mark_inode_dirty_sync(inode);
 		return 0;
 
diff --git a/fs/logfs/inode.c b/fs/logfs/inode.c
index db9cfc5..65eaf09 100644
--- a/fs/logfs/inode.c
+++ b/fs/logfs/inode.c
@@ -213,8 +213,7 @@ static void logfs_init_inode(struct super_block *sb, struct inode *inode)
 	i_gid_write(inode, 0);
 	inode->i_size	= 0;
 	inode->i_blocks	= 0;
-	inode->i_ctime	= CURRENT_TIME;
-	inode->i_mtime	= CURRENT_TIME;
+	inode->i_ctime	= inode->i_mtime = current_fs_time(sb);
 	li->li_refcount = 1;
 	INIT_LIST_HEAD(&li->li_freeing_list);
 
diff --git a/fs/logfs/readwrite.c b/fs/logfs/readwrite.c
index 20973c9..361a2d0 100644
--- a/fs/logfs/readwrite.c
+++ b/fs/logfs/readwrite.c
@@ -1539,14 +1539,15 @@ static int grow_inode(struct inode *inode, u64 bix, level_t level)
 
 static int __logfs_write_buf(struct inode *inode, struct page *page, long flags)
 {
-	struct logfs_super *super = logfs_super(inode->i_sb);
+	struct super_block *sb = inode->i_sb;
+	struct logfs_super *super = logfs_super(sb);
 	pgoff_t index = page->index;
 	u64 bix;
 	level_t level;
 	int err;
 
 	flags |= WF_WRITE | WF_DELETE;
-	inode->i_ctime = inode->i_mtime = CURRENT_TIME;
+	inode->i_ctime = inode->i_mtime = current_fs_time(sb);
 
 	logfs_unpack_index(index, &bix, &level);
 	if (logfs_block(page) && logfs_block(page)->reserved_bytes)
@@ -1578,7 +1579,7 @@ static int __logfs_delete(struct inode *inode, struct page *page)
 	long flags = WF_DELETE;
 	int err;
 
-	inode->i_ctime = inode->i_mtime = CURRENT_TIME;
+	inode->i_ctime = inode->i_mtime = current_fs_time(inode->i_sb);
 
 	if (page->index < I0_BLOCKS)
 		return logfs_write_direct(inode, page, flags);
-- 
1.9.1