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fs: ubifs: replace CURRENT_TIME_SEC with current_time
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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/[email protected]
Signed-off-by: Deepa Dinamani <[email protected]>
Reviewed-by: Arnd Bergmann <[email protected]>
Cc: Richard Weinberger <[email protected]>
Cc: Artem Bityutskiy <[email protected]>
Cc: Adrian Hunter <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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@deepa-hub @torvalds
deepa-hub authored and torvalds committed May 9, 2017
1 parent a88e99e commit 607a11a
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Showing 6 changed files with 26 additions and 30 deletions.
12 changes: 6 additions & 6 deletions fs/ubifs/dir.c
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Original file line number Diff line number Diff line change
Expand Up @@ -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) {
Expand Down Expand Up @@ -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;
Expand Down Expand Up @@ -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;
Expand Down Expand Up @@ -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;
Expand Down Expand Up @@ -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 */
Expand Down Expand Up @@ -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;
Expand Down
12 changes: 6 additions & 6 deletions fs/ubifs/file.c
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Original file line number Diff line number Diff line change
Expand Up @@ -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);
Expand Down Expand Up @@ -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;
}
Expand Down Expand Up @@ -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;

Expand All @@ -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);
Expand Down Expand Up @@ -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;

Expand Down Expand Up @@ -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);
Expand Down
2 changes: 1 addition & 1 deletion fs/ubifs/ioctl.c
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Original file line number Diff line number Diff line change
Expand Up @@ -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);
Expand Down
10 changes: 0 additions & 10 deletions fs/ubifs/misc.h
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Original file line number Diff line number Diff line change
Expand Up @@ -224,16 +224,6 @@ static inline void *ubifs_idx_key(const struct ubifs_info *c,
return (void *)((struct ubifs_branch *)idx->branches)->key;
}

/**
* 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
Expand Down
14 changes: 10 additions & 4 deletions fs/ubifs/sb.c
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Original file line number Diff line number Diff line change
Expand Up @@ -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;
Expand Down Expand Up @@ -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);

Expand Down
6 changes: 3 additions & 3 deletions fs/ubifs/xattr.c
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Original file line number Diff line number Diff line change
Expand Up @@ -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);
Expand Down Expand Up @@ -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);

Expand Down Expand Up @@ -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);
Expand Down

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