diff options
author | Mel Gorman <mel@csn.ul.ie> | 2007-10-16 04:25:52 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-16 12:43:00 -0400 |
commit | e12ba74d8ff3e2f73a583500d7095e406df4d093 (patch) | |
tree | a0d3385b65f0b3e1e00b0bbf11b75e7538a93edb /fs/proc/base.c | |
parent | c361be55b3128474aa66d31092db330b07539103 (diff) |
Group short-lived and reclaimable kernel allocations
This patch marks a number of allocations that are either short-lived such as
network buffers or are reclaimable such as inode allocations. When something
like updatedb is called, long-lived and unmovable kernel allocations tend to
be spread throughout the address space which increases fragmentation.
This patch groups these allocations together as much as possible by adding a
new MIGRATE_TYPE. The MIGRATE_RECLAIMABLE type is for allocations that can be
reclaimed on demand, but not moved. i.e. they can be migrated by deleting
them and re-reading the information from elsewhere.
Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Cc: Andy Whitcroft <apw@shadowen.org>
Cc: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/proc/base.c')
-rw-r--r-- | fs/proc/base.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c index e5d0953d4db1..78fdfea1a7f8 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c | |||
@@ -492,7 +492,7 @@ static ssize_t proc_info_read(struct file * file, char __user * buf, | |||
492 | count = PROC_BLOCK_SIZE; | 492 | count = PROC_BLOCK_SIZE; |
493 | 493 | ||
494 | length = -ENOMEM; | 494 | length = -ENOMEM; |
495 | if (!(page = __get_free_page(GFP_KERNEL))) | 495 | if (!(page = __get_free_page(GFP_TEMPORARY))) |
496 | goto out; | 496 | goto out; |
497 | 497 | ||
498 | length = PROC_I(inode)->op.proc_read(task, (char*)page); | 498 | length = PROC_I(inode)->op.proc_read(task, (char*)page); |
@@ -532,7 +532,7 @@ static ssize_t mem_read(struct file * file, char __user * buf, | |||
532 | goto out; | 532 | goto out; |
533 | 533 | ||
534 | ret = -ENOMEM; | 534 | ret = -ENOMEM; |
535 | page = (char *)__get_free_page(GFP_USER); | 535 | page = (char *)__get_free_page(GFP_TEMPORARY); |
536 | if (!page) | 536 | if (!page) |
537 | goto out; | 537 | goto out; |
538 | 538 | ||
@@ -602,7 +602,7 @@ static ssize_t mem_write(struct file * file, const char __user *buf, | |||
602 | goto out; | 602 | goto out; |
603 | 603 | ||
604 | copied = -ENOMEM; | 604 | copied = -ENOMEM; |
605 | page = (char *)__get_free_page(GFP_USER); | 605 | page = (char *)__get_free_page(GFP_TEMPORARY); |
606 | if (!page) | 606 | if (!page) |
607 | goto out; | 607 | goto out; |
608 | 608 | ||
@@ -788,7 +788,7 @@ static ssize_t proc_loginuid_write(struct file * file, const char __user * buf, | |||
788 | /* No partial writes. */ | 788 | /* No partial writes. */ |
789 | return -EINVAL; | 789 | return -EINVAL; |
790 | } | 790 | } |
791 | page = (char*)__get_free_page(GFP_USER); | 791 | page = (char*)__get_free_page(GFP_TEMPORARY); |
792 | if (!page) | 792 | if (!page) |
793 | return -ENOMEM; | 793 | return -ENOMEM; |
794 | length = -EFAULT; | 794 | length = -EFAULT; |
@@ -954,7 +954,8 @@ static int do_proc_readlink(struct dentry *dentry, struct vfsmount *mnt, | |||
954 | char __user *buffer, int buflen) | 954 | char __user *buffer, int buflen) |
955 | { | 955 | { |
956 | struct inode * inode; | 956 | struct inode * inode; |
957 | char *tmp = (char*)__get_free_page(GFP_KERNEL), *path; | 957 | char *tmp = (char*)__get_free_page(GFP_TEMPORARY); |
958 | char *path; | ||
958 | int len; | 959 | int len; |
959 | 960 | ||
960 | if (!tmp) | 961 | if (!tmp) |
@@ -1726,7 +1727,7 @@ static ssize_t proc_pid_attr_write(struct file * file, const char __user * buf, | |||
1726 | goto out; | 1727 | goto out; |
1727 | 1728 | ||
1728 | length = -ENOMEM; | 1729 | length = -ENOMEM; |
1729 | page = (char*)__get_free_page(GFP_USER); | 1730 | page = (char*)__get_free_page(GFP_TEMPORARY); |
1730 | if (!page) | 1731 | if (!page) |
1731 | goto out; | 1732 | goto out; |
1732 | 1733 | ||