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Message-Id: <1465448705-25055-4-git-send-email-deepa.kernel@gmail.com>
Date: Wed, 8 Jun 2016 22:04:47 -0700
From: Deepa Dinamani <deepa.kernel@...il.com>
To: linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Arnd Bergmann <arnd@...db.de>,
Thomas Gleixner <tglx@...utronix.de>,
Al Viro <viro@...iv.linux.org.uk>,
Linus Torvalds <torvalds@...ux-foundation.org>,
y2038@...ts.linaro.org, Artem Bityutskiy <dedekind1@...il.com>,
Adrian Hunter <adrian.hunter@...el.com>,
linux-mtd@...ts.infradead.org
Subject: [PATCH 03/21] fs: ubifs: Use current_fs_time() for inode timestamps
CURRENT_TIME_SEC is not y2038 safe. current_fs_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_fs_time() returns timestamps according to the
granularities set in the super_block.
The granularity check to call current_fs_time() or
CURRENT_TIME_SEC is not required.
Use current_fs_time() to obtain timestamps
unconditionally.
Signed-off-by: Deepa Dinamani <deepa.kernel@...il.com>
Cc: Artem Bityutskiy <dedekind1@...il.com>
Cc: Adrian Hunter <adrian.hunter@...el.com>
Cc: linux-mtd@...ts.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 | 18 ++++++++++++++----
fs/ubifs/xattr.c | 6 +++---
6 files changed, 29 insertions(+), 29 deletions(-)
diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
index 4b86d3a..2dede0f 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_fs_time(inode->i_sb);
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_fs_time(inode->i_sb);
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_fs_time(dir->i_sb);
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_fs_time(dir->i_sb);
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_fs_time(old_dir->i_sb);
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 0831697..01c46e0 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -1181,7 +1181,7 @@ 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_fs_time(inode->i_sb);
/* 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);
@@ -1228,7 +1228,7 @@ 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_fs_time(inode->i_sb);
/* 'truncate_setsize()' changed @i_size, update @ui_size */
ui->ui_size = inode->i_size;
}
@@ -1405,7 +1405,7 @@ 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_fs_time(inode->i_sb);
struct ubifs_inode *ui = ubifs_inode(inode);
struct ubifs_info *c = inode->i_sb->s_fs_info;
@@ -1419,7 +1419,7 @@ 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_fs_time(inode->i_sb);
release = ui->dirty;
mark_inode_dirty_sync(inode);
mutex_unlock(&ui->ui_mutex);
@@ -1477,7 +1477,7 @@ 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_fs_time(inode->i_sb);
struct ubifs_budget_req req = { .new_page = 1 };
int err, update_time;
@@ -1545,7 +1545,7 @@ 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_fs_time(inode->i_sb);
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..127b2ae 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_fs_time(inode->i_sb);
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..f4f73d2 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 +299,21 @@ 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);
+
+ /* Initialize the super_block properties needed by
+ * current_fs_time().
+ */
+ c->vfs_sb->s_time_gran = DEFAULT_TIME_GRAN;
+
+ ts = current_fs_time(c->vfs_sb);
+ 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..76a3c49 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_fs_time(host->i_sb);
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_fs_time(host->i_sb);
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_fs_time(host->i_sb);
host_ui->xattr_cnt -= 1;
host_ui->xattr_size -= CALC_DENT_SIZE(nm->len);
host_ui->xattr_size -= CALC_XATTR_BYTES(ui->data_len);
--
1.9.1
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