linux-kernel - [PATCH v7 05/13] fat: make fat_update

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Message-Id: <20230807-mgctime-v7-5-d1dec143a704@kernel.org>
Date:   Mon, 07 Aug 2023 15:38:36 -0400
From:   Jeff Layton <jlayton@...nel.org>
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        Jeff Layton <jlayton@...nel.org>
Subject: [PATCH v7 05/13] fat: make fat_update_time get its own timestamp

In later patches, we're going to drop the "now" parameter from the
update_time operation. Fix fat_update_time to fetch its own timestamp.
It turns out that this is easily done by just passing a NULL timestamp
pointer to fat_update_time.

Also, it may be that things have changed by the time we get to calling
fat_update_time after checking inode_needs_update_time. Ensure that we
attempt the i_version bump if any of the S_* flags besides S_ATIME are
set.

Signed-off-by: Jeff Layton <jlayton@...nel.org>
---
 fs/fat/misc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/fat/misc.c b/fs/fat/misc.c
index 67006ea08db6..8cab87145d63 100644
--- a/fs/fat/misc.c
+++ b/fs/fat/misc.c
@@ -347,14 +347,14 @@ int fat_update_time(struct inode *inode, struct timespec64 *now, int flags)
 		return 0;
 
 	if (flags & (S_ATIME | S_CTIME | S_MTIME)) {
-		fat_truncate_time(inode, now, flags);
+		fat_truncate_time(inode, NULL, flags);
 		if (inode->i_sb->s_flags & SB_LAZYTIME)
 			dirty_flags |= I_DIRTY_TIME;
 		else
 			dirty_flags |= I_DIRTY_SYNC;
 	}
 
-	if ((flags & S_VERSION) && inode_maybe_inc_iversion(inode, false))
+	if ((flags & (S_VERSION|S_CTIME|S_MTIME)) && inode_maybe_inc_iversion(inode, false))
 		dirty_flags |= I_DIRTY_SYNC;
 
 	__mark_inode_dirty(inode, dirty_flags);

-- 
2.41.0