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| author | Linus Walleij <linus.walleij@linaro.org> | 2017-01-30 14:39:20 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2017-01-30 14:39:20 +0100 |
| commit | 7f36f5d11cda050b118f76d774151427a18d15ef (patch) | |
| tree | 9d4fa3b830785b767525a5e6a065fe4297cd8112 /include/linux/mmzone.h | |
| parent | 2b24efa8e5c5042b0f126c09622b3e9e3c86a4fa (diff) | |
| parent | 566cf877a1fcb6d6dc0126b076aad062054c2637 (diff) | |
Merge tag 'v4.10-rc6' into devel
Linux 4.10-rc6
Resolved conflicts in:
drivers/pinctrl/pinctrl-amd.c
drivers/pinctrl/samsung/pinctrl-exynos.c
Diffstat (limited to 'include/linux/mmzone.h')
| -rw-r--r-- | include/linux/mmzone.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 36d9896fbc1e..f4aac87adcc3 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -972,12 +972,16 @@ static __always_inline struct zoneref *next_zones_zonelist(struct zoneref *z, * @zonelist - The zonelist to search for a suitable zone * @highest_zoneidx - The zone index of the highest zone to return * @nodes - An optional nodemask to filter the zonelist with - * @zone - The first suitable zone found is returned via this parameter + * @return - Zoneref pointer for the first suitable zone found (see below) * * This function returns the first zone at or below a given zone index that is * within the allowed nodemask. The zoneref returned is a cursor that can be * used to iterate the zonelist with next_zones_zonelist by advancing it by * one before calling. + * + * When no eligible zone is found, zoneref->zone is NULL (zoneref itself is + * never NULL). This may happen either genuinely, or due to concurrent nodemask + * update due to cpuset modification. */ static inline struct zoneref *first_zones_zonelist(struct zonelist *zonelist, enum zone_type highest_zoneidx, |