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mm/page_reporting: change page_reporting_order to PAGE_REPORTING_ORDER_UNSPECIFIED

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page_reporting_order when uninitialised, holds a magic number -1.

Since we now maintain PAGE_REPORTING_ORDER_UNSPECIFIED as -1, which is
also a flag, set page_reporting_order to this flag.

Link: https://lkml.kernel.org/r/20260303113032.3008371-6-yuvraj.sakshith@oss.qualcomm.com
Signed-off-by: Yuvraj Sakshith <yuvraj.sakshith@oss.qualcomm.com>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Cc: Brendan Jackman <jackmanb@google.com>
Cc: Dexuan Cui <decui@microsoft.com>
Cc: Eugenio Pérez <eperezma@redhat.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Jason Wang <jasowang@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: K. Y. Srinivasan <kys@microsoft.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Long Li <longli@microsoft.com>
Cc: Lorenzo Stoakes (Oracle) <ljs@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Wei Liu <wei.liu@kernel.org>
Cc: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Yuvraj Sakshith
2026-03-03 03:30:32 -08:00
committed by Andrew Morton
parent 5467c292d0
commit 4a34e46eb5
1 changed files with 2 additions and 2 deletions
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4
mm/page_reporting.c
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@@ -12,7 +12,7 @@
#include "internal.h"
/* Initialize to an unsupported value */
unsigned int page_reporting_order = -1;
unsigned int page_reporting_order = PAGE_REPORTING_ORDER_UNSPECIFIED;
static int page_order_update_notify(const char *val, const struct kernel_param *kp)
{
@@ -369,7 +369,7 @@ int page_reporting_register(struct page_reporting_dev_info *prdev)
* pageblock_order.
*/
if (page_reporting_order == -1) {
if (page_reporting_order == PAGE_REPORTING_ORDER_UNSPECIFIED) {
if (prdev->order != PAGE_REPORTING_ORDER_UNSPECIFIED &&
prdev->order <= MAX_PAGE_ORDER)
page_reporting_order = prdev->order;