linux-ext4 - [PATCH 2/2] writeback, xfs: call dirty_inode() with I_DIRTY_TIME

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Date:   Thu, 19 Mar 2020 22:52:55 -0400
From:   "Theodore Ts'o" <tytso@....edu>
To:     Ext4 Developers List <linux-ext4@...r.kernel.org>,
        linux-f2fs-devel@...ts.sourceforge.net, linux-xfs@...r.kernel.org
Cc:     "Theodore Ts'o" <tytso@....edu>
Subject: [PATCH 2/2] writeback, xfs: call dirty_inode() with I_DIRTY_TIME_EXPIRED when appropriate

Use the flag I_DIRTY_TIME_EXPIRED passed to dirty_inode() to signal to
the file system that it is time to flush the inode's timestamps to
stable storage.

Signed-off-by: Theodore Ts'o <tytso@....edu>
---
 fs/fs-writeback.c  | 2 +-
 fs/xfs/xfs_super.c | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 867454997c9d..32101349ba97 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -1506,7 +1506,7 @@ __writeback_single_inode(struct inode *inode, struct writeback_control *wbc)
 
 	/* This was a lazytime expiration; we need to tell the file system */
 	if (dirty & I_DIRTY_TIME_EXPIRED && inode->i_sb->s_op->dirty_inode)
-		inode->i_sb->s_op->dirty_inode(inode, I_DIRTY_SYNC);
+		inode->i_sb->s_op->dirty_inode(inode, I_DIRTY_TIME_EXPIRED);
 	/* Don't write the inode if only I_DIRTY_PAGES was set */
 	if (dirty & ~I_DIRTY_PAGES) {
 		int err = write_inode(inode, wbc);
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index 2094386af8ac..f27b9b205f81 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -622,7 +622,8 @@ xfs_fs_dirty_inode(
 
 	if (!(inode->i_sb->s_flags & SB_LAZYTIME))
 		return;
-	if (flag != I_DIRTY_SYNC || !(inode->i_state & I_DIRTY_TIME))
+	if ((flag != I_DIRTY_SYNC && flag != I_DIRTY_TIME_EXPIRED) ||
+	    !(inode->i_state & I_DIRTY_TIME))
 		return;
 
 	if (xfs_trans_alloc(mp, &M_RES(mp)->tr_fsyncts, 0, 0, 0, &tp))
-- 
2.24.1