lkml.org 
[lkml]   [2007]   [Mar]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 3/12] Add __GFP_MOVABLE for callers to flag allocations from low memory that may be migrated
Date

This patch flags the allocations from low memory that may be migrated.

A GFP_USER_MOVABLE similar to GFP_HIGH_MOVABLE is not provided in this patch
because it would only be used once. This patch uses __GFP_MOVABLE twice
for a GFP_USER and a GFP_NOIO allocation. There is little point defining
GFP_*_MOVABLE for one use unless people feel it would help self-documentation.

Signed-off-by: Mel Gorman <mel@csn.ul.ie>
---

block_dev.c | 2 +-
buffer.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)

diff -rup -X /usr/src/patchset-0.6/bin//dontdiff linux-2.6.20-mm2-002_clustering_flags/fs/block_dev.c linux-2.6.20-mm2-003_additional_flags/fs/block_dev.c
--- linux-2.6.20-mm2-002_clustering_flags/fs/block_dev.c 2007-02-19 01:21:36.000000000 +0000
+++ linux-2.6.20-mm2-003_additional_flags/fs/block_dev.c 2007-02-20 18:27:38.000000000 +0000
@@ -576,7 +576,7 @@ struct block_device *bdget(dev_t dev)
inode->i_rdev = dev;
inode->i_bdev = bdev;
inode->i_data.a_ops = &def_blk_aops;
- mapping_set_gfp_mask(&inode->i_data, GFP_USER);
+ mapping_set_gfp_mask(&inode->i_data, GFP_USER|__GFP_MOVABLE);
inode->i_data.backing_dev_info = &default_backing_dev_info;
spin_lock(&bdev_lock);
list_add(&bdev->bd_list, &all_bdevs);
diff -rup -X /usr/src/patchset-0.6/bin//dontdiff linux-2.6.20-mm2-002_clustering_flags/fs/buffer.c linux-2.6.20-mm2-003_additional_flags/fs/buffer.c
--- linux-2.6.20-mm2-002_clustering_flags/fs/buffer.c 2007-02-19 01:21:36.000000000 +0000
+++ linux-2.6.20-mm2-003_additional_flags/fs/buffer.c 2007-02-20 18:27:38.000000000 +0000
@@ -2652,7 +2652,7 @@ int submit_bh(int rw, struct buffer_head
* from here on down, it's all bio -- do the initial mapping,
* submit_bio -> generic_make_request may further map this bio around
*/
- bio = bio_alloc(GFP_NOIO, 1);
+ bio = bio_alloc(GFP_NOIO|__GFP_MOVABLE, 1);

bio->bi_sector = bh->b_blocknr * (bh->b_size >> 9);
bio->bi_bdev = bh->b_bdev;
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
\
 
 \ /
  Last update: 2007-03-01 11:07    [W:0.040 / U:9.420 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site