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authorLinus Torvalds <torvalds@linux-foundation.org>2016-10-10 20:16:43 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-10-10 20:16:43 -0700
commit101105b1717f536ca741f940033996302d4ef191 (patch)
tree12ab41ae1b1b66105e9fa2ea763356d2be7e8b34 /fs/inode.c
parent35ff96dfd3c9aaa921b3e8dcac76b7697f2dcec0 (diff)
parent3873691e5ab34fa26948643d038a2b98c4437298 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull more vfs updates from Al Viro: ">rename2() work from Miklos + current_time() from Deepa" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: fs: Replace current_fs_time() with current_time() fs: Replace CURRENT_TIME_SEC with current_time() for inode timestamps fs: Replace CURRENT_TIME with current_time() for inode timestamps fs: proc: Delete inode time initializations in proc_alloc_inode() vfs: Add current_time() api vfs: add note about i_op->rename changes to porting fs: rename "rename2" i_op to "rename" vfs: remove unused i_op->rename fs: make remaining filesystems use .rename2 libfs: support RENAME_NOREPLACE in simple_rename() fs: support RENAME_NOREPLACE for local filesystems ncpfs: fix unused variable warning
Diffstat (limited to 'fs/inode.c')
-rw-r--r--fs/inode.c29
1 files changed, 26 insertions, 3 deletions
diff --git a/fs/inode.c b/fs/inode.c
index 7d037591259d..88110fd0b282 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -1686,7 +1686,7 @@ bool __atime_needs_update(const struct path *path, struct inode *inode,
if ((mnt->mnt_flags & MNT_NODIRATIME) && S_ISDIR(inode->i_mode))
return false;
- now = current_fs_time(inode->i_sb);
+ now = current_time(inode);
if (!relatime_need_update(path, inode, now, rcu))
return false;
@@ -1720,7 +1720,7 @@ void touch_atime(const struct path *path)
* We may also fail on filesystems that have the ability to make parts
* of the fs read only, e.g. subvolumes in Btrfs.
*/
- now = current_fs_time(inode->i_sb);
+ now = current_time(inode);
update_time(inode, &now, S_ATIME);
__mnt_drop_write(mnt);
skip_update:
@@ -1843,7 +1843,7 @@ int file_update_time(struct file *file)
if (IS_NOCMTIME(inode))
return 0;
- now = current_fs_time(inode->i_sb);
+ now = current_time(inode);
if (!timespec_equal(&inode->i_mtime, &now))
sync_it = S_MTIME;
@@ -2099,3 +2099,26 @@ void inode_nohighmem(struct inode *inode)
mapping_set_gfp_mask(inode->i_mapping, GFP_USER);
}
EXPORT_SYMBOL(inode_nohighmem);
+
+/**
+ * current_time - Return FS time
+ * @inode: inode.
+ *
+ * Return the current time truncated to the time granularity supported by
+ * the fs.
+ *
+ * Note that inode and inode->sb cannot be NULL.
+ * Otherwise, the function warns and returns time without truncation.
+ */
+struct timespec current_time(struct inode *inode)
+{
+ struct timespec now = current_kernel_time();
+
+ if (unlikely(!inode->i_sb)) {
+ WARN(1, "current_time() called with uninitialized super_block in the inode");
+ return now;
+ }
+
+ return timespec_trunc(now, inode->i_sb->s_time_gran);
+}
+EXPORT_SYMBOL(current_time);