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authorDeepa Dinamani <deepa.kernel@gmail.com>2017-05-08 15:59:25 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-08 17:15:15 -0700
commit607a11ad947794d0f4f2c0f73c654876d1abb9b1 (patch)
tree1eab3f7535afa4fa293c46e183acdb32ea74d9fa /fs
parenta88e99e976582814cf73acd04134f52a620f3416 (diff)
downloadlwn-607a11ad947794d0f4f2c0f73c654876d1abb9b1.tar.gz
lwn-607a11ad947794d0f4f2c0f73c654876d1abb9b1.zip
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. Link: http://lkml.kernel.org/r/1491613030-11599-9-git-send-email-deepa.kernel@gmail.com Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Cc: Richard Weinberger <richard@nod.at> Cc: Artem Bityutskiy <dedekind1@gmail.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs')
-rw-r--r--fs/ubifs/dir.c12
-rw-r--r--fs/ubifs/file.c12
-rw-r--r--fs/ubifs/ioctl.c2
-rw-r--r--fs/ubifs/misc.h10
-rw-r--r--fs/ubifs/sb.c14
-rw-r--r--fs/ubifs/xattr.c6
6 files changed, 26 insertions, 30 deletions
diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
index b777bddaa1dd..19fcc9a3364e 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) {
@@ -755,7 +755,7 @@ static int ubifs_link(struct dentry *old_dentry, struct inode *dir,
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;
@@ -830,7 +830,7 @@ 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;
@@ -934,7 +934,7 @@ 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;
@@ -1411,7 +1411,7 @@ 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 */
@@ -1584,7 +1584,7 @@ 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 d9ae86f96df7..2cda3d67e2d0 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 da519ba205f6..12b9eb5005ff 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 8ece6ca58c0b..caf83d68fb38 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 7f1ead29e727..8c25081a5109 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 efe00fcb8b75..3e53fdbf7997 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);