diff mbox

[v3,08/24] fs: ubifs: Replace CURRENT_TIME_SEC with current_time

Message ID 1466890668-23400-9-git-send-email-deepa.kernel@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Deepa Dinamani June 25, 2016, 9:37 p.m. UTC 
CURRENT_TIME_SEC is not y2038 safe. current_time() will
be transitioned to use 64 bit time along with vfs in a
separate patch.
There is no plan to transition CURRENT_TIME_SEC to use
y2038 safe time interfaces.

current_time() returns timestamps according to the
granularities set in the inode's super_block.
The granularity check to call current_fs_time() or
CURRENT_TIME_SEC is not required.

Use current_time() directly to update inode timestamp.
Use timespec_trunc during file system creation, before
the first inode is created.

Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
Cc: Artem Bityutskiy <dedekind1@gmail.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: linux-mtd@lists.infradead.org
---
 fs/ubifs/dir.c   | 10 +++++-----
 fs/ubifs/file.c  | 12 ++++++------
 fs/ubifs/ioctl.c |  2 +-
 fs/ubifs/misc.h  | 10 ----------
 fs/ubifs/sb.c    | 14 ++++++++++----
 fs/ubifs/xattr.c |  6 +++---
 6 files changed, 25 insertions(+), 29 deletions(-)
diff mbox

Patch

diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
index 4b86d3a..6e2dff9 100644
--- a/fs/ubifs/dir.c
+++ b/fs/ubifs/dir.c
@@ -106,7 +106,7 @@  struct inode *ubifs_new_inode(struct ubifs_info *c, const struct inode *dir,
 
 	inode_init_owner(inode, dir, mode);
 	inode->i_mtime = inode->i_atime = inode->i_ctime =
-			 ubifs_current_time(inode);
+			 current_time(inode);
 	inode->i_mapping->nrpages = 0;
 
 	switch (mode & S_IFMT) {
@@ -529,7 +529,7 @@  static int ubifs_link(struct dentry *old_dentry, struct inode *dir,
 	lock_2_inodes(dir, inode);
 	inc_nlink(inode);
 	ihold(inode);
-	inode->i_ctime = ubifs_current_time(inode);
+	inode->i_ctime = current_time(inode);
 	dir->i_size += sz_change;
 	dir_ui->ui_size = dir->i_size;
 	dir->i_mtime = dir->i_ctime = inode->i_ctime;
@@ -586,7 +586,7 @@  static int ubifs_unlink(struct inode *dir, struct dentry *dentry)
 	}
 
 	lock_2_inodes(dir, inode);
-	inode->i_ctime = ubifs_current_time(dir);
+	inode->i_ctime = current_time(dir);
 	drop_nlink(inode);
 	dir->i_size -= sz_change;
 	dir_ui->ui_size = dir->i_size;
@@ -675,7 +675,7 @@  static int ubifs_rmdir(struct inode *dir, struct dentry *dentry)
 	}
 
 	lock_2_inodes(dir, inode);
-	inode->i_ctime = ubifs_current_time(dir);
+	inode->i_ctime = current_time(dir);
 	clear_nlink(inode);
 	drop_nlink(dir);
 	dir->i_size -= sz_change;
@@ -1023,7 +1023,7 @@  static int ubifs_rename(struct inode *old_dir, struct dentry *old_dentry,
 	 * Like most other Unix systems, set the @i_ctime for inodes on a
 	 * rename.
 	 */
-	time = ubifs_current_time(old_dir);
+	time = current_time(old_dir);
 	old_inode->i_ctime = time;
 
 	/* We must adjust parent link count when renaming directories */
diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
index 7bbf420..45e3d71 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -1182,7 +1182,7 @@  static int do_truncation(struct ubifs_info *c, struct inode *inode,
 	mutex_lock(&ui->ui_mutex);
 	ui->ui_size = inode->i_size;
 	/* Truncation changes inode [mc]time */
-	inode->i_mtime = inode->i_ctime = ubifs_current_time(inode);
+	inode->i_mtime = inode->i_ctime = current_time(inode);
 	/* Other attributes may be changed at the same time as well */
 	do_attr_changes(inode, attr);
 	err = ubifs_jnl_truncate(c, inode, old_size, new_size);
@@ -1229,7 +1229,7 @@  static int do_setattr(struct ubifs_info *c, struct inode *inode,
 	mutex_lock(&ui->ui_mutex);
 	if (attr->ia_valid & ATTR_SIZE) {
 		/* Truncation changes inode [mc]time */
-		inode->i_mtime = inode->i_ctime = ubifs_current_time(inode);
+		inode->i_mtime = inode->i_ctime = current_time(inode);
 		/* 'truncate_setsize()' changed @i_size, update @ui_size */
 		ui->ui_size = inode->i_size;
 	}
@@ -1406,7 +1406,7 @@  int ubifs_update_time(struct inode *inode, struct timespec *time,
  */
 static int update_mctime(struct inode *inode)
 {
-	struct timespec now = ubifs_current_time(inode);
+	struct timespec now = current_time(inode);
 	struct ubifs_inode *ui = ubifs_inode(inode);
 	struct ubifs_info *c = inode->i_sb->s_fs_info;
 
@@ -1420,7 +1420,7 @@  static int update_mctime(struct inode *inode)
 			return err;
 
 		mutex_lock(&ui->ui_mutex);
-		inode->i_mtime = inode->i_ctime = ubifs_current_time(inode);
+		inode->i_mtime = inode->i_ctime = current_time(inode);
 		release = ui->dirty;
 		mark_inode_dirty_sync(inode);
 		mutex_unlock(&ui->ui_mutex);
@@ -1498,7 +1498,7 @@  static int ubifs_vm_page_mkwrite(struct vm_area_struct *vma,
 	struct page *page = vmf->page;
 	struct inode *inode = file_inode(vma->vm_file);
 	struct ubifs_info *c = inode->i_sb->s_fs_info;
-	struct timespec now = ubifs_current_time(inode);
+	struct timespec now = current_time(inode);
 	struct ubifs_budget_req req = { .new_page = 1 };
 	int err, update_time;
 
@@ -1566,7 +1566,7 @@  static int ubifs_vm_page_mkwrite(struct vm_area_struct *vma,
 		struct ubifs_inode *ui = ubifs_inode(inode);
 
 		mutex_lock(&ui->ui_mutex);
-		inode->i_mtime = inode->i_ctime = ubifs_current_time(inode);
+		inode->i_mtime = inode->i_ctime = current_time(inode);
 		release = ui->dirty;
 		mark_inode_dirty_sync(inode);
 		mutex_unlock(&ui->ui_mutex);
diff --git a/fs/ubifs/ioctl.c b/fs/ubifs/ioctl.c
index 3c7b29d..a81603d 100644
--- a/fs/ubifs/ioctl.c
+++ b/fs/ubifs/ioctl.c
@@ -126,7 +126,7 @@  static int setflags(struct inode *inode, int flags)
 
 	ui->flags = ioctl2ubifs(flags);
 	ubifs_set_inode_flags(inode);
-	inode->i_ctime = ubifs_current_time(inode);
+	inode->i_ctime = current_time(inode);
 	release = ui->dirty;
 	mark_inode_dirty_sync(inode);
 	mutex_unlock(&ui->ui_mutex);
diff --git a/fs/ubifs/misc.h b/fs/ubifs/misc.h
index 8ece6ca..caf83d6 100644
--- a/fs/ubifs/misc.h
+++ b/fs/ubifs/misc.h
@@ -225,16 +225,6 @@  static inline void *ubifs_idx_key(const struct ubifs_info *c,
 }
 
 /**
- * ubifs_current_time - round current time to time granularity.
- * @inode: inode
- */
-static inline struct timespec ubifs_current_time(struct inode *inode)
-{
-	return (inode->i_sb->s_time_gran < NSEC_PER_SEC) ?
-		current_fs_time(inode->i_sb) : CURRENT_TIME_SEC;
-}
-
-/**
  * ubifs_tnc_lookup - look up a file-system node.
  * @c: UBIFS file-system description object
  * @key: node key to lookup
diff --git a/fs/ubifs/sb.c b/fs/ubifs/sb.c
index 3cbb904..907bfff 100644
--- a/fs/ubifs/sb.c
+++ b/fs/ubifs/sb.c
@@ -84,6 +84,8 @@  static int create_default_filesystem(struct ubifs_info *c)
 	int min_leb_cnt = UBIFS_MIN_LEB_CNT;
 	long long tmp64, main_bytes;
 	__le64 tmp_le64;
+	__le32 tmp_le32;
+	struct timespec ts;
 
 	/* Some functions called from here depend on the @c->key_len filed */
 	c->key_len = UBIFS_SK_LEN;
@@ -297,13 +299,17 @@  static int create_default_filesystem(struct ubifs_info *c)
 	ino->ch.node_type = UBIFS_INO_NODE;
 	ino->creat_sqnum = cpu_to_le64(++c->max_sqnum);
 	ino->nlink = cpu_to_le32(2);
-	tmp_le64 = cpu_to_le64(CURRENT_TIME_SEC.tv_sec);
+
+	ktime_get_real_ts(&ts);
+	ts = timespec_trunc(ts, DEFAULT_TIME_GRAN);
+	tmp_le64 = cpu_to_le64(ts.tv_sec);
 	ino->atime_sec   = tmp_le64;
 	ino->ctime_sec   = tmp_le64;
 	ino->mtime_sec   = tmp_le64;
-	ino->atime_nsec  = 0;
-	ino->ctime_nsec  = 0;
-	ino->mtime_nsec  = 0;
+	tmp_le32 = cpu_to_le32(ts.tv_nsec);
+	ino->atime_nsec  = tmp_le32;
+	ino->ctime_nsec  = tmp_le32;
+	ino->mtime_nsec  = tmp_le32;
 	ino->mode = cpu_to_le32(S_IFDIR | S_IRUGO | S_IWUSR | S_IXUGO);
 	ino->size = cpu_to_le64(UBIFS_INO_NODE_SZ);
 
diff --git a/fs/ubifs/xattr.c b/fs/ubifs/xattr.c
index b5fc279..c34f74e 100644
--- a/fs/ubifs/xattr.c
+++ b/fs/ubifs/xattr.c
@@ -152,7 +152,7 @@  static int create_xattr(struct ubifs_info *c, struct inode *host,
 	ui->data_len = size;
 
 	mutex_lock(&host_ui->ui_mutex);
-	host->i_ctime = ubifs_current_time(host);
+	host->i_ctime = current_time(host);
 	host_ui->xattr_cnt += 1;
 	host_ui->xattr_size += CALC_DENT_SIZE(nm->len);
 	host_ui->xattr_size += CALC_XATTR_BYTES(size);
@@ -221,7 +221,7 @@  static int change_xattr(struct ubifs_info *c, struct inode *host,
 	mutex_unlock(&ui->ui_mutex);
 
 	mutex_lock(&host_ui->ui_mutex);
-	host->i_ctime = ubifs_current_time(host);
+	host->i_ctime = current_time(host);
 	host_ui->xattr_size -= CALC_XATTR_BYTES(ui->data_len);
 	host_ui->xattr_size += CALC_XATTR_BYTES(size);
 
@@ -458,7 +458,7 @@  static int remove_xattr(struct ubifs_info *c, struct inode *host,
 		return err;
 
 	mutex_lock(&host_ui->ui_mutex);
-	host->i_ctime = ubifs_current_time(host);
+	host->i_ctime = current_time(host);
 	host_ui->xattr_cnt -= 1;
 	host_ui->xattr_size -= CALC_DENT_SIZE(nm->len);
 	host_ui->xattr_size -= CALC_XATTR_BYTES(ui->data_len);