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From: Mel Gorman <mel@csn.ul.ie>
To: akpm@linux-foundation.org
Cc: Mel Gorman <mel@csn.ul.ie>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: [PATCH 3/12] Add __GFP_MOVABLE for callers to flag allocations from low memory that may be migrated
Date: Thu, 1 Mar 2007 10:03:30 +0000 (GMT) [thread overview]
Message-ID: <20070301100330.29753.56840.sendpatchset@skynet.skynet.ie> (raw)
In-Reply-To: <20070301100229.29753.86342.sendpatchset@skynet.skynet.ie>
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;
next prev parent reply other threads:[~2007-03-01 10:03 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-01 10:02 [PATCH 0/12] Group pages of related mobility together to reduce external fragmentation v28 Mel Gorman
2007-03-01 10:02 ` [PATCH 1/12] Add a bitmap that is used to track flags affecting a block of pages Mel Gorman
2007-03-01 10:03 ` [PATCH 2/12] Add __GFP_MOVABLE for callers to flag allocations from high memory that may be migrated Mel Gorman
2007-03-01 10:03 ` Mel Gorman [this message]
2007-03-01 10:03 ` [PATCH 4/12] Split the free lists for movable and unmovable allocations Mel Gorman
2007-03-01 10:04 ` [PATCH 5/12] Choose pages from the per-cpu list based on migration type Mel Gorman
2007-03-01 10:04 ` [PATCH 6/12] Add a configure option to group pages by mobility Mel Gorman
2007-03-01 10:04 ` [PATCH 7/12] Drain per-cpu lists when high-order allocations fail Mel Gorman
2007-03-01 10:05 ` [PATCH 8/12] Move free pages between lists on steal Mel Gorman
2007-03-01 10:05 ` [PATCH 9/12] Group short-lived and reclaimable kernel allocations Mel Gorman
2007-03-01 10:05 ` [PATCH 10/12] Group high-order atomic allocations Mel Gorman
2007-03-01 10:06 ` [PATCH 11/12] Bias the placement of kernel pages at lower PFNs Mel Gorman
2007-03-01 10:06 ` [PATCH 12/12] Be more agressive about stealing when MIGRATE_RECLAIMABLE allocations fallback Mel Gorman
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