[PATCH] fat: fix mtime handing in __fat_write_inode

From: Jeff Layton
Date: Wed Oct 18 2023 - 07:15:52 EST


Klara reported seeing mangled mtimes when dealing with FAT. Fix the
braino in the FAT conversion to the new timestamp accessors.

Fixes: e57260ae3226 (fat: convert to new timestamp accessors)
Reported-by: Klara Modin <klarasmodin@xxxxxxxxx>
Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
---
This patch fixes the bug that Klara reported late yesterday. The issue
is a bad by-hand conversion of __fat_write_inode to the new timestamp
accessor functions.

Christian, this patch should probably be squashed into e57260ae3226.

Thanks!
Jeff
---
fs/fat/inode.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index aa87f323fd44..1fac3dabf130 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -888,9 +888,9 @@ static int __fat_write_inode(struct inode *inode, int wait)
raw_entry->size = cpu_to_le32(inode->i_size);
raw_entry->attr = fat_make_attrs(inode);
fat_set_start(raw_entry, MSDOS_I(inode)->i_logstart);
+ mtime = inode_get_mtime(inode);
fat_time_unix2fat(sbi, &mtime, &raw_entry->time,
&raw_entry->date, NULL);
- inode_set_mtime_to_ts(inode, mtime);
if (sbi->options.isvfat) {
struct timespec64 ts = inode_get_atime(inode);
__le16 atime;

---
base-commit: fea0e8fc7829dc85f82c8a1a8249630f6fb85553
change-id: 20231018-amtime-24d2effcc9a9

Best regards,
--
Jeff Layton <jlayton@xxxxxxxxxx>