* [PATCH] include/linux/gfp.h: fix the annotation of GFP_ZONE_TABLE
@ 2018-06-01 16:34 Huaisheng Ye
0 siblings, 0 replies; only message in thread
From: Huaisheng Ye @ 2018-06-01 16:34 UTC (permalink / raw)
To: linux-mm
Cc: chengnt, Huaisheng Ye, Andrew Morton, Vlastimil Babka,
Michal Hocko, Mel Gorman, Kate Stewart, Levin,
Alexander (Sasha Levin),
Greg Kroah-Hartman, Christoph Hellwig, Matthew Wilcox
From: Huaisheng Ye <yehs1@lenovo.com>
When bit is equal to 0x4, it means OPT_ZONE_DMA32 should be got
from GFP_ZONE_TABLE.
OPT_ZONE_DMA32 shall be equal to ZONE_DMA32 or ZONE_NORMAL
according to the status of CONFIG_ZONE_DMA32.
Similarly, when bit is equal to 0xc, that means OPT_ZONE_DMA32
should be got with an allocation policy GFP_MOVABLE.
So ZONE_DMA32 or ZONE_NORMAL is the possible result value.
Signed-off-by: Huaisheng Ye <yehs1@lenovo.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: "Levin, Alexander (Sasha Levin)" <alexander.levin@verizon.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Matthew Wilcox <willy@infradead.org>
---
include/linux/gfp.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index 1a4582b..3f1b3dc 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -343,7 +343,7 @@ static inline bool gfpflags_allow_blocking(const gfp_t gfp_flags)
* 0x1 => DMA or NORMAL
* 0x2 => HIGHMEM or NORMAL
* 0x3 => BAD (DMA+HIGHMEM)
- * 0x4 => DMA32 or DMA or NORMAL
+ * 0x4 => DMA32 or NORMAL
* 0x5 => BAD (DMA+DMA32)
* 0x6 => BAD (HIGHMEM+DMA32)
* 0x7 => BAD (HIGHMEM+DMA32+DMA)
@@ -351,7 +351,7 @@ static inline bool gfpflags_allow_blocking(const gfp_t gfp_flags)
* 0x9 => DMA or NORMAL (MOVABLE+DMA)
* 0xa => MOVABLE (Movable is valid only if HIGHMEM is set too)
* 0xb => BAD (MOVABLE+HIGHMEM+DMA)
- * 0xc => DMA32 (MOVABLE+DMA32)
+ * 0xc => DMA32 or NORMAL (MOVABLE+DMA32)
* 0xd => BAD (MOVABLE+DMA32+DMA)
* 0xe => BAD (MOVABLE+DMA32+HIGHMEM)
* 0xf => BAD (MOVABLE+DMA32+HIGHMEM+DMA)
--
1.8.3.1
^ permalink raw reply related [flat|nested] only message in thread
only message in thread, other threads:[~2018-06-01 16:37 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-06-01 16:34 [PATCH] include/linux/gfp.h: fix the annotation of GFP_ZONE_TABLE Huaisheng Ye
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.