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Message-Id: <1491613030-11599-9-git-send-email-deepa.kernel@gmail.com>
Date: Fri, 7 Apr 2017 17:57:06 -0700
From: Deepa Dinamani <deepa.kernel@...il.com>
To: linux-kernel@...r.kernel.org, akpm@...ux-foundation.org
Cc: tglx@...utronix.de, viro@...iv.linux.org.uk,
gregkh@...uxfoundation.org, andreas.dilger@...el.com,
arnd@...db.de, bfields@...ldses.org, clm@...com,
davem@...emloft.net, dsterba@...e.com, dushistov@...l.ru,
eparis@...hat.com, jaegeuk@...nel.org, jbacik@...com,
jlayton@...chiereds.net, john.stultz@...aro.org,
jsimmons@...radead.org, mingo@...hat.com, oleg.drokin@...el.com,
paul@...l-moore.com, rostedt@...dmis.org, yuchao0@...wei.com,
ceph-devel@...r.kernel.org, devel@...verdev.osuosl.org,
linux-audit@...hat.com, linux-btrfs@...r.kernel.org,
linux-cifs@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net,
linux-fsdevel@...r.kernel.org, linux-mtd@...ts.infradead.org,
linux-security-module@...r.kernel.org,
lustre-devel@...ts.lustre.org, netdev@...r.kernel.org,
samba-technical@...ts.samba.org, y2038@...ts.linaro.org
Subject: [PATCH 08/12] fs: ubifs: Replace CURRENT_TIME_SEC with current_time
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@...il.com>
Reviewed-by: Arnd Bergmann <arnd@...db.de>
---
fs/ubifs/dir.c | 12 ++++++------
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, 26 insertions(+), 30 deletions(-)
diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
index 30825d88..8510d79 100644
--- a/fs/ubifs/dir.c
+++ b/fs/ubifs/dir.c
@@ -121,7 +121,7 @@ struct inode *ubifs_new_inode(struct ubifs_info *c, 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) {
@@ -750,7 +750,7 @@ 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;
@@ -823,7 +823,7 @@ 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;
@@ -927,7 +927,7 @@ 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;
@@ -1405,7 +1405,7 @@ static int do_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 */
@@ -1578,7 +1578,7 @@ static int ubifs_xrename(struct inode *old_dir, struct dentry *old_dentry,
lock_4_inodes(old_dir, new_dir, NULL, NULL);
- time = ubifs_current_time(old_dir);
+ time = current_time(old_dir);
fst_inode->i_ctime = time;
snd_inode->i_ctime = time;
old_dir->i_mtime = old_dir->i_ctime = time;
diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
index d9ae86f..2cda3d6 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -1196,7 +1196,7 @@ 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);
@@ -1243,7 +1243,7 @@ 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;
}
@@ -1420,7 +1420,7 @@ 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;
@@ -1434,7 +1434,7 @@ 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);
@@ -1511,7 +1511,7 @@ static int 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 = ubifs_current_time(inode);
+ struct timespec now = current_time(inode);
struct ubifs_budget_req req = { .new_page = 1 };
int err, update_time;
@@ -1579,7 +1579,7 @@ static int ubifs_vm_page_mkwrite(struct vm_fault *vmf)
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 da519ba..12b9eb50 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 7f1ead2..8c25081 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;
@@ -298,13 +300,17 @@ 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 efe00fc..3e53fdb 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(fname_len(nm));
host_ui->xattr_size += CALC_XATTR_BYTES(size);
@@ -234,7 +234,7 @@ 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(old_size);
host_ui->xattr_size += CALC_XATTR_BYTES(size);
@@ -488,7 +488,7 @@ 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(fname_len(nm));
host_ui->xattr_size -= CALC_XATTR_BYTES(ui->data_len);
--
2.7.4
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