From: Dave Hansen <[email protected]>
It is currently not obvious that the RECLAIM_* bits are part of the uapi since they are defined in vmscan.c. Move them to a uapi header to make it obvious. This should have no functional impact. Signed-off-by: Dave Hansen <[email protected]> Reviewed-by: Ben Widawsky <[email protected]> Acked-by: David Rientjes <[email protected]> Cc: Alex Shi <[email protected]> Cc: Daniel Wagner <[email protected]> Cc: "Tobin C. Harding" <[email protected]> Cc: Christoph Lameter <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Huang Ying <[email protected]> Cc: Dan Williams <[email protected]> Cc: Qian Cai <[email protected]> Cc: Daniel Wagner <[email protected]> -- Note: This is not cc'd to stable. It does not fix any bugs. --- b/include/uapi/linux/mempolicy.h | 7 +++++++ b/mm/vmscan.c | 8 -------- 2 files changed, 7 insertions(+), 8 deletions(-) diff -puN include/uapi/linux/mempolicy.h~mm-vmscan-move-RECLAIM-bits-to-uapi include/uapi/linux/mempolicy.h --- a/include/uapi/linux/mempolicy.h~mm-vmscan-move-RECLAIM-bits-to-uapi 2020-10-06 13:39:21.720818440 -0700 +++ b/include/uapi/linux/mempolicy.h 2020-10-06 13:39:21.726818440 -0700 @@ -62,5 +62,12 @@ enum { #define MPOL_F_MOF (1 << 3) /* this policy wants migrate on fault */ #define MPOL_F_MORON (1 << 4) /* Migrate On protnone Reference On Node */ +/* + * These bit locations are exposed in the vm.zone_reclaim_mode sysctl + * ABI. New bits are OK, but existing bits can never change. + */ +#define RECLAIM_ZONE (1<<0) /* Run shrink_inactive_list on the zone */ +#define RECLAIM_WRITE (1<<1) /* Writeout pages during reclaim */ +#define RECLAIM_UNMAP (1<<2) /* Unmap pages during reclaim */ #endif /* _UAPI_LINUX_MEMPOLICY_H */ diff -puN mm/vmscan.c~mm-vmscan-move-RECLAIM-bits-to-uapi mm/vmscan.c --- a/mm/vmscan.c~mm-vmscan-move-RECLAIM-bits-to-uapi 2020-10-06 13:39:21.722818440 -0700 +++ b/mm/vmscan.c 2020-10-06 13:39:21.727818440 -0700 @@ -4084,14 +4084,6 @@ module_init(kswapd_init) int node_reclaim_mode __read_mostly; /* - * These bit locations are exposed in the vm.zone_reclaim_mode sysctl - * ABI. New bits are OK, but existing bits can never change. - */ -#define RECLAIM_ZONE (1<<0) /* Run shrink_inactive_list on the zone */ -#define RECLAIM_WRITE (1<<1) /* Writeout pages during reclaim */ -#define RECLAIM_UNMAP (1<<2) /* Unmap pages during reclaim */ - -/* * Priority for NODE_RECLAIM. This determines the fraction of pages * of a node considered for each zone_reclaim. 4 scans 1/16th of * a zone. _
