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Message-Id: <20180516202023.167627-1-shakeelb@google.com>
Date: Wed, 16 May 2018 13:20:23 -0700
From: Shakeel Butt <shakeelb@...gle.com>
To: Michal Hocko <mhocko@...nel.org>,
Andrew Morton <akpm@...ux-foundation.org>,
Greg Thelen <gthelen@...gle.com>,
Mel Gorman <mgorman@...hsingularity.net>,
Vlastimil Babka <vbabka@...e.cz>
Cc: Linux MM <linux-mm@...ck.org>, LKML <linux-kernel@...r.kernel.org>,
Shakeel Butt <shakeelb@...gle.com>
Subject: [PATCH] mm: save two stranding bit in gfp_mask
___GFP_COLD and ___GFP_OTHER_NODE were removed but their bits were
stranded. Slide existing gfp masks to make those two bits available.
Signed-off-by: Shakeel Butt <shakeelb@...gle.com>
---
include/linux/gfp.h | 42 +++++++++++++++++++++---------------------
1 file changed, 21 insertions(+), 21 deletions(-)
diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index 1a4582b44d32..8edf72d32411 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -16,31 +16,31 @@ struct vm_area_struct;
*/
/* Plain integer GFP bitmasks. Do not use this directly. */
-#define ___GFP_DMA 0x01u
-#define ___GFP_HIGHMEM 0x02u
-#define ___GFP_DMA32 0x04u
-#define ___GFP_MOVABLE 0x08u
+#define ___GFP_DMA 0x1u
+#define ___GFP_HIGHMEM 0x2u
+#define ___GFP_DMA32 0x4u
+#define ___GFP_MOVABLE 0x8u
#define ___GFP_RECLAIMABLE 0x10u
#define ___GFP_HIGH 0x20u
#define ___GFP_IO 0x40u
#define ___GFP_FS 0x80u
-#define ___GFP_NOWARN 0x200u
-#define ___GFP_RETRY_MAYFAIL 0x400u
-#define ___GFP_NOFAIL 0x800u
-#define ___GFP_NORETRY 0x1000u
-#define ___GFP_MEMALLOC 0x2000u
-#define ___GFP_COMP 0x4000u
-#define ___GFP_ZERO 0x8000u
-#define ___GFP_NOMEMALLOC 0x10000u
-#define ___GFP_HARDWALL 0x20000u
-#define ___GFP_THISNODE 0x40000u
-#define ___GFP_ATOMIC 0x80000u
-#define ___GFP_ACCOUNT 0x100000u
-#define ___GFP_DIRECT_RECLAIM 0x400000u
-#define ___GFP_WRITE 0x800000u
-#define ___GFP_KSWAPD_RECLAIM 0x1000000u
+#define ___GFP_NOWARN 0x100u
+#define ___GFP_RETRY_MAYFAIL 0x200u
+#define ___GFP_NOFAIL 0x400u
+#define ___GFP_NORETRY 0x800u
+#define ___GFP_MEMALLOC 0x1000u
+#define ___GFP_COMP 0x2000u
+#define ___GFP_ZERO 0x4000u
+#define ___GFP_NOMEMALLOC 0x8000u
+#define ___GFP_HARDWALL 0x10000u
+#define ___GFP_THISNODE 0x20000u
+#define ___GFP_ATOMIC 0x40000u
+#define ___GFP_ACCOUNT 0x80000u
+#define ___GFP_DIRECT_RECLAIM 0x100000u
+#define ___GFP_WRITE 0x200000u
+#define ___GFP_KSWAPD_RECLAIM 0x400000u
#ifdef CONFIG_LOCKDEP
-#define ___GFP_NOLOCKDEP 0x2000000u
+#define ___GFP_NOLOCKDEP 0x800000u
#else
#define ___GFP_NOLOCKDEP 0
#endif
@@ -205,7 +205,7 @@ struct vm_area_struct;
#define __GFP_NOLOCKDEP ((__force gfp_t)___GFP_NOLOCKDEP)
/* Room for N __GFP_FOO bits */
-#define __GFP_BITS_SHIFT (25 + IS_ENABLED(CONFIG_LOCKDEP))
+#define __GFP_BITS_SHIFT (23 + IS_ENABLED(CONFIG_LOCKDEP))
#define __GFP_BITS_MASK ((__force gfp_t)((1 << __GFP_BITS_SHIFT) - 1))
/*
--
2.17.0.441.gb46fe60e1d-goog
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