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authorStephen Kitt <steve@sk2.org>2023-03-25 09:22:32 +0100
committerChristian Brauner <brauner@kernel.org>2023-03-27 13:51:32 +0200
commitd98ffa1aca264ce547b9135135f83d81cfe4345f (patch)
tree96d0879eb92883753a49740f9578cc04b5719cfa
parentdc7cb2d29805fe4fa4000fc0b09740fc24c93408 (diff)
Update relatime comments to include equality
relatime also updates atime if the previous atime is equal to one or both of the ctime and mtime; a non-strict interpretation of "earlier than" and "younger than" in the comments allows this, but for clarity, this makes it explicit. Pointed out by "epiii2" and "ctrl-alt-delor" in https://unix.stackexchange.com/q/740862/86440. Signed-off-by: Stephen Kitt <steve@sk2.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
-rw-r--r--fs/inode.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/fs/inode.c b/fs/inode.c
index 4558dc2f1355..3ec5a8f7b644 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -1804,8 +1804,8 @@ EXPORT_SYMBOL(bmap);
/*
* With relative atime, only update atime if the previous atime is
- * earlier than either the ctime or mtime or if at least a day has
- * passed since the last atime update.
+ * earlier than or equal to either the ctime or mtime,
+ * or if at least a day has passed since the last atime update.
*/
static int relatime_need_update(struct vfsmount *mnt, struct inode *inode,
struct timespec64 now)
@@ -1814,12 +1814,12 @@ static int relatime_need_update(struct vfsmount *mnt, struct inode *inode,
if (!(mnt->mnt_flags & MNT_RELATIME))
return 1;
/*
- * Is mtime younger than atime? If yes, update atime:
+ * Is mtime younger than or equal to atime? If yes, update atime:
*/
if (timespec64_compare(&inode->i_mtime, &inode->i_atime) >= 0)
return 1;
/*
- * Is ctime younger than atime? If yes, update atime:
+ * Is ctime younger than or equal to atime? If yes, update atime:
*/
if (timespec64_compare(&inode->i_ctime, &inode->i_atime) >= 0)
return 1;