Subject: linux-next: manual merge of the mm tree with the bitmap tree

From: Stephen Rothwell <[email-masked]>
Date: Mon, 4 Jul 2022 17:13:26 +1000

Hi all,

Today's linux-next merge of the mm tree got a conflict in:

  include/linux/gfp.h

between commit:

  db0e627fee42 ("mm: split include/linux/gfp.h")

from the bitmap tree and commit:

  199520d04b35 ("mm: discard __GFP_ATOMIC")

from the mm tree.

I fixed it up (I used the former version of this files and applied the
following merge fix patch) and can carry the fix as necessary. This
is now fixed as far as linux-next is concerned, but any non trivial
conflicts should be mentioned to your upstream maintainer when your tree
is submitted for merging.  You may also want to consider cooperating
with the maintainer of the conflicting tree to minimise any particularly
complex conflicts.

From: Stephen Rothwell <[email-masked]>
Date: Mon, 4 Jul 2022 17:09:47 +1000
Subject: [PATCH] fix up for "mm: split include/linux/gfp.h"

Signed-off-by: Stephen Rothwell <[email-masked]>
---
 include/linux/gfp_flags.h | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/include/linux/gfp_flags.h b/include/linux/gfp_flags.h
index 846cc8151340..6338c093cc38 100644
--- a/include/linux/gfp_flags.h
+++ b/include/linux/gfp_flags.h
@@ -17,7 +17,7 @@
 #define ___GFP_IO		0x40u
 #define ___GFP_FS		0x80u
 #define ___GFP_ZERO		0x100u
-#define ___GFP_ATOMIC		0x200u
+/* 0x200u unused */
 #define ___GFP_DIRECT_RECLAIM	0x400u
 #define ___GFP_KSWAPD_RECLAIM	0x800u
 #define ___GFP_WRITE		0x1000u
@@ -102,11 +102,8 @@
  *
  * %__GFP_HIGH indicates that the caller is high-priority and that granting
  * the request is necessary before the system can make forward progress.
- * For example, creating an IO context to clean pages.
- *
- * %__GFP_ATOMIC indicates that the caller cannot reclaim or sleep and is
- * high priority. Users are typically interrupt handlers. This may be
- * used in conjunction with %__GFP_HIGH
+ * For example creating an IO context to clean pages and requests
+ * from atomic context.
  *
  * %__GFP_MEMALLOC allows access to all memory. This should only be used when
  * the caller guarantees the allocation will allow more memory to be freed
@@ -121,7 +118,6 @@
  * %__GFP_NOMEMALLOC is used to explicitly forbid access to emergency reserves.
  * This takes precedence over the %__GFP_MEMALLOC flag if both are set.
  */
-#define __GFP_ATOMIC	((__force gfp_t)___GFP_ATOMIC)
 #define __GFP_HIGH	((__force gfp_t)___GFP_HIGH)
 #define __GFP_MEMALLOC	((__force gfp_t)___GFP_MEMALLOC)
 #define __GFP_NOMEMALLOC ((__force gfp_t)___GFP_NOMEMALLOC)
@@ -315,7 +311,7 @@
  * version does not attempt reclaim/compaction at all and is by default used
  * in page fault path, while the non-light is used by khugepaged.
  */
-#define GFP_ATOMIC	(__GFP_HIGH|__GFP_ATOMIC|__GFP_KSWAPD_RECLAIM)
+#define GFP_ATOMIC	(__GFP_HIGH|__GFP_KSWAPD_RECLAIM)
 #define GFP_KERNEL	(__GFP_RECLAIM | __GFP_IO | __GFP_FS)
 #define GFP_KERNEL_ACCOUNT (GFP_KERNEL | __GFP_ACCOUNT)
 #define GFP_NOWAIT	(__GFP_KSWAPD_RECLAIM)
-- 
2.35.1

-- 
Cheers,
Stephen Rothwell