mount: warn only once about timestamp range expiration

Commit f8b92ba67c5d ("mount: Add mount warning for impending timestamp
expiry") introduced a mount warning regarding filesystem timestamp
limits, that is printed upon each writable mount or remount.

This can result in a lot of unnecessary messages in the kernel log in
setups where filesystems are being frequently remounted (or mounted
multiple times).

Avoid this by setting a superblock flag which indicates that the warning
has been emitted at least once for any particular mount, as suggested in
[1].

Link: https://lore.kernel.org/CAHk-=wim6VGnxQmjfK_tDg6fbHYKL4EFkmnTjVr9QnRqjDBAeA@mail.gmail.com/ [1]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Anthony Iliopoulos <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Acked-by: Christian Brauner <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
Cc: Alexander Viro <[email protected]>
Cc: Deepa Dinamani <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions