On Tue, 27 Jul 2021, Vlastimil Babka wrote: > From 81a225fe31e53701902bb4caa9ab1524eb044cbc Mon Sep 17 00:00:00 2001 > From: Vlastimil Babka <vbabka@xxxxxxx> > Date: Tue, 13 Jul 2021 17:15:50 +0530 > Subject: [PATCH] mm: slub: fix slub_debug disabling for list of slabs > > Vijayanand Jitta reports: > > Consider the scenario where CONFIG_SLUB_DEBUG_ON is set > and we would want to disable slub_debug for few slabs. > Using boot parameter with slub_debug=-,slab_name syntax > doesn't work as expected i.e; only disabling debugging for > the specified list of slabs. Instead it disables debugging > for all slabs, which is wrong. > > This patch fixes it by delaying the moment when the global slub_debug flags > variable is updated. In case a "slub_debug=-,slab_name" has been passed, the > global flags remain as initialized (depending on CONFIG_SLUB_DEBUG_ON enabled > or disabled) and are not simply reset to 0. > > Reported-by: Vijayanand Jitta <vjitta@xxxxxxxxxxxxxx> > Signed-off-by: Vlastimil Babka <vbabka@xxxxxxx> > Reviewed-by: Vijayanand Jitta <vjitta@xxxxxxxxxxxxxx> Acked-by: David Rientjes <rientjes@xxxxxxxxxx> Looks better, thanks!
