[PATCH] Add GFP_NOWAIT

Introduce GFP_NOWAIT, as an alias for GFP_ATOMIC & ~__GFP_HIGH.

This also changes XFS, which is the only in-tree user of this idiom that I
could find.  The XFS piece is compile-tested only.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Acked-by: Nathan Scott <nathans@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2 files changed, 3 insertions, 1 deletions

diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c
index 9fb0312665ca..26fed0756f01 100644
--- a/fs/xfs/linux-2.6/xfs_buf.c
+++ b/fs/xfs/linux-2.6/xfs_buf.c
@@ -182,7 +182,7 @@ free_address(
 {
         a_list_t        *aentry;
 
-        aentry = kmalloc(sizeof(a_list_t), GFP_ATOMIC & ~__GFP_HIGH);
+        aentry = kmalloc(sizeof(a_list_t), GFP_NOWAIT);
         if (likely(aentry)) {
                 spin_lock(&as_lock);
                 aentry->next = as_free_head;
diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index 7851e6b520cf..3ac452945a7d 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -57,6 +57,8 @@ struct vm_area_struct;
                         __GFP_NOFAIL|__GFP_NORETRY|__GFP_NO_GROW|__GFP_COMP| \
                         __GFP_NOMEMALLOC|__GFP_HARDWALL)
 
+/* This equals 0, but use constants in case they ever change */
+#define GFP_NOWAIT      (GFP_ATOMIC & ~__GFP_HIGH)
 /* GFP_ATOMIC means both !wait (__GFP_WAIT not set) and use emergency pool */
 #define GFP_ATOMIC      (__GFP_HIGH)
 #define GFP_NOIO        (__GFP_WAIT)