On Wed, Feb 03, 2021 at 03:41:56PM +0300, Pavel Tikhomirov wrote: > Currently there is no way to differentiate the file with alive owner > from the file with dead owner but pid of the owner reused. That's why > CRIU can't actually know if it needs to restore file owner or not, > because if it restores owner but actual owner was dead, this can > introduce unexpected signals to the "false"-owner (which reused the > pid). > > Let's change the api, so that F_GETOWN(EX) returns 0 in case actual > owner is dead already. > > Cc: Jeff Layton <[email protected]> > Cc: "J. Bruce Fields" <[email protected]> > Cc: Alexander Viro <[email protected]> > Cc: [email protected] > Cc: [email protected] > Cc: Cyrill Gorcunov <[email protected]> > Cc: Andrei Vagin <[email protected]> > Signed-off-by: Pavel Tikhomirov <[email protected]>
I can't imagine a scenario where we could break some backward compatibility with this change, so Reviewed-by: Cyrill Gorcunov <[email protected]>
