[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-Id: <20070207204030.30615.77294.stgit@localhost.localdomain>
Date: Wed, 07 Feb 2007 12:40:30 -0800
From: Adam Litke <agl@...ibm.com>
To: akpm@...ux-foundation.org
Cc: linux-kernel@...r.kernel.org, linux-mm@...ck.org, agl@...ibm.com
Subject: [PATCH] Define the shmem_inode_info flags directly
Andrew: This is a pretty basic and obvious cleanup IMO. How about a ride in
-mm?
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@...ibm.com>
---
include/linux/shmem_fs.h | 4 ++++
mm/shmem.c | 4 ----
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h
index f3c5189..3ea0b6e 100644
--- a/include/linux/shmem_fs.h
+++ b/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 --git a/mm/shmem.c b/mm/shmem.c
index 70da7a0..a9bdb0d 100644
--- a/mm/shmem.c
+++ b/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
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists