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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2007-10-16 23:25:46 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-17 08:42:45 -0700
commite0bf68ddec4f4f90e5871404be4f1854c17f3120 (patch)
tree36203a3558cbe26d698bed18be69b3822fb5eef2 /mm
parentdc62a30e274d003a4d08fb888f1520add4b21373 (diff)
mm: bdi init hooks
provide BDI constructor/destructor hooks [akpm@linux-foundation.org: compile fix] Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/readahead.c6
-rw-r--r--mm/shmem.c6
-rw-r--r--mm/swap.c5
3 files changed, 17 insertions, 0 deletions
diff --git a/mm/readahead.c b/mm/readahead.c
index 22978888401..c9c50ca1ec3 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -233,6 +233,12 @@ unsigned long max_sane_readahead(unsigned long nr)
+ node_page_state(numa_node_id(), NR_FREE_PAGES)) / 2);
}
+static int __init readahead_init(void)
+{
+ return bdi_init(&default_backing_dev_info);
+}
+subsys_initcall(readahead_init);
+
/*
* Submit IO for the read-ahead request in file_ra_state.
*/
diff --git a/mm/shmem.c b/mm/shmem.c
index 8a82342a859..2f039f32031 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -2464,6 +2464,10 @@ static int __init init_tmpfs(void)
{
int error;
+ error = bdi_init(&shmem_backing_dev_info);
+ if (error)
+ goto out4;
+
error = init_inodecache();
if (error)
goto out3;
@@ -2488,6 +2492,8 @@ out1:
out2:
destroy_inodecache();
out3:
+ bdi_destroy(&shmem_backing_dev_info);
+out4:
shm_mnt = ERR_PTR(error);
return error;
}
diff --git a/mm/swap.c b/mm/swap.c
index d034b2128d2..a65eff8a517 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -28,6 +28,7 @@
#include <linux/percpu.h>
#include <linux/cpu.h>
#include <linux/notifier.h>
+#include <linux/backing-dev.h>
/* How many pages do we try to swap or page in/out together? */
int page_cluster;
@@ -547,6 +548,10 @@ void __init swap_setup(void)
{
unsigned long megs = num_physpages >> (20 - PAGE_SHIFT);
+#ifdef CONFIG_SWAP
+ bdi_init(swapper_space.backing_dev_info);
+#endif
+
/* Use a smaller cluster for small-memory machines */
if (megs < 16)
page_cluster = 2;