f2fs: detect idle time depending on user behavior

This patch adds last time that user requested filesystem operations.
This information is used to detect whether system is idle or not later.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c
index 29bb8dd76a46..faa7495e2d7e 100644
--- a/fs/f2fs/dir.c
+++ b/fs/f2fs/dir.c
@@ -636,6 +636,7 @@ fail:
 	f2fs_put_page(dentry_page, 1);
 out:
 	f2fs_fname_free_filename(&fname);
+	f2fs_update_time(F2FS_I_SB(dir), REQ_TIME);
 	return err;
 }
 
@@ -657,6 +658,7 @@ int f2fs_do_tmpfile(struct inode *inode, struct inode *dir)
 	clear_inode_flag(F2FS_I(inode), FI_NEW_INODE);
 fail:
 	up_write(&F2FS_I(inode)->i_sem);
+	f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
 	return err;
 }
 
@@ -701,6 +703,8 @@ void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page,
 	int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len));
 	int i;
 
+	f2fs_update_time(F2FS_I_SB(dir), REQ_TIME);
+
 	if (f2fs_has_inline_dentry(dir))
 		return f2fs_delete_inline_entry(dentry, page, dir, inode);