The patch titled
Define the shmem_inode_info flags directly
has been added to the -mm tree. Its filename is
define-the-shmem_inode_info-flags-directly.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: Define the shmem_inode_info flags directly
From: Adam Litke <agl@xxxxxxxxxx>
Defining flags in terms of other flags is always confusing. Give them
literal values instead of defining them in terms of VM_flags. While we're
at it, move them to a header file in preparation for the introduction of a
SHMEM_HUGETLB flag.
Signed-off-by: Adam Litke <agl@xxxxxxxxxx>
Cc: Hugh Dickins <hugh@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/shmem_fs.h | 4 ++++
mm/shmem.c | 4 ----
2 files changed, 4 insertions(+), 4 deletions(-)
diff -puN include/linux/shmem_fs.h~define-the-shmem_inode_info-flags-directly include/linux/shmem_fs.h
--- a/include/linux/shmem_fs.h~define-the-shmem_inode_info-flags-directly
+++ a/include/linux/shmem_fs.h
@@ -8,6 +8,10 @@
#define SHMEM_NR_DIRECT 16
+/* These info->flags are used to handle pagein/truncate races efficiently */
+#define SHMEM_PAGEIN 0x00000001
+#define SHMEM_TRUNCATE 0x00000002
+
struct shmem_inode_info {
spinlock_t lock;
unsigned long flags;
diff -puN mm/shmem.c~define-the-shmem_inode_info-flags-directly mm/shmem.c
--- a/mm/shmem.c~define-the-shmem_inode_info-flags-directly
+++ a/mm/shmem.c
@@ -66,10 +66,6 @@
#define VM_ACCT(size) (PAGE_CACHE_ALIGN(size) >> PAGE_SHIFT)
-/* info->flags needs VM_flags to handle pagein/truncate races efficiently */
-#define SHMEM_PAGEIN VM_READ
-#define SHMEM_TRUNCATE VM_WRITE
-
/* Definition to limit shmem_truncate's steps between cond_rescheds */
#define LATENCY_LIMIT 64
_
Patches currently in -mm which might be from agl@xxxxxxxxxx are
hugetlb-preserve-hugetlb-pte-dirty-state.patch
define-the-shmem_inode_info-flags-directly.patch
-
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