diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/readahead.c | 6 | ||||
| -rw-r--r-- | mm/shmem.c | 6 | ||||
| -rw-r--r-- | mm/swap.c | 5 |
3 files changed, 17 insertions, 0 deletions
diff --git a/mm/readahead.c b/mm/readahead.c index 229788884010..c9c50ca1ec38 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 8a82342a8595..2f039f32031f 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 d034b2128d2b..a65eff8a517a 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; |