path: root/fs
diff options
authorLinus Torvalds <torvalds@linux-foundation.org>2011-01-20 17:02:14 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-20 17:02:14 -0800
commit8d99641f6c1af806cd5d9e6badce91910219a161 (patch)
treeee841f807005a4a6234f6f502a13185d13a34870 /fs
parentMerge branch 'tty-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6 (diff)
parentkernel/smp.c: consolidate writes in smp_call_function_interrupt() (diff)
Merge branch 'akpm'
* akpm: kernel/smp.c: consolidate writes in smp_call_function_interrupt() kernel/smp.c: fix smp_call_function_many() SMP race memcg: correctly order reading PCG_USED and pc->mem_cgroup backlight: fix 88pm860x_bl macro collision drivers/leds/ledtrig-gpio.c: make output match input, tighten input checking MAINTAINERS: update Atmel AT91 entry mm: fix truncate_setsize() comment memcg: fix rmdir, force_empty with THP memcg: fix LRU accounting with THP memcg: fix USED bit handling at uncharge in THP memcg: modify accounting function for supporting THP better fs/direct-io.c: don't try to allocate more than BIO_MAX_PAGES in a bio mm: compaction: prevent division-by-zero during user-requested compaction mm/vmscan.c: remove duplicate include of compaction.h memblock: fix memblock_is_region_memory() thp: keep highpte mapped until it is no longer needed kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT
Diffstat (limited to 'fs')
4 files changed, 12 insertions, 8 deletions
diff --git a/fs/Kconfig b/fs/Kconfig
index 9a7921ae4763..3db9caa57edc 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -50,7 +50,7 @@ config EXPORTFS
- bool "Enable POSIX file locking API" if EMBEDDED
+ bool "Enable POSIX file locking API" if EXPERT
default y
This option enables standard file locking support, required
diff --git a/fs/direct-io.c b/fs/direct-io.c
index 85882f6ba5f7..b044705eedd4 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -325,12 +325,16 @@ void dio_end_io(struct bio *bio, int error)
-static int
+static void
dio_bio_alloc(struct dio *dio, struct block_device *bdev,
sector_t first_sector, int nr_vecs)
struct bio *bio;
+ /*
+ * bio_alloc() is guaranteed to return a bio when called with
+ * __GFP_WAIT and we request a valid number of vectors.
+ */
bio = bio_alloc(GFP_KERNEL, nr_vecs);
bio->bi_bdev = bdev;
@@ -342,7 +346,6 @@ dio_bio_alloc(struct dio *dio, struct block_device *bdev,
dio->bio = bio;
dio->logical_offset_in_bio = dio->cur_page_fs_offset;
- return 0;
@@ -583,8 +586,9 @@ static int dio_new_bio(struct dio *dio, sector_t start_sector)
goto out;
sector = start_sector << (dio->blkbits - 9);
nr_pages = min(dio->pages_in_io, bio_get_nr_vecs(dio->map_bh.b_bdev));
+ nr_pages = min(nr_pages, BIO_MAX_PAGES);
BUG_ON(nr_pages <= 0);
- ret = dio_bio_alloc(dio, dio->map_bh.b_bdev, sector, nr_pages);
+ dio_bio_alloc(dio, dio->map_bh.b_bdev, sector, nr_pages);
dio->boundary = 0;
return ret;
diff --git a/fs/proc/Kconfig b/fs/proc/Kconfig
index 6a0068841d96..15af6222f8a4 100644
--- a/fs/proc/Kconfig
+++ b/fs/proc/Kconfig
@@ -1,5 +1,5 @@
config PROC_FS
- bool "/proc file system support" if EMBEDDED
+ bool "/proc file system support" if EXPERT
default y
This is a virtual file system providing information about the status
@@ -40,7 +40,7 @@ config PROC_VMCORE
Exports the dump image of crashed kernel in ELF format.
- bool "Sysctl support (/proc/sys)" if EMBEDDED
+ bool "Sysctl support (/proc/sys)" if EXPERT
depends on PROC_FS
select SYSCTL
default y
@@ -61,7 +61,7 @@ config PROC_SYSCTL
default y
depends on PROC_FS && MMU
- bool "Enable /proc page monitoring" if EMBEDDED
+ bool "Enable /proc page monitoring" if EXPERT
Various /proc files exist to monitor process memory utilization:
/proc/pid/smaps, /proc/pid/clear_refs, /proc/pid/pagemap,
diff --git a/fs/sysfs/Kconfig b/fs/sysfs/Kconfig
index f4b67588b9d6..8c41feacbac5 100644
--- a/fs/sysfs/Kconfig
+++ b/fs/sysfs/Kconfig
@@ -1,5 +1,5 @@
config SYSFS
- bool "sysfs file system support" if EMBEDDED
+ bool "sysfs file system support" if EXPERT
default y
The sysfs filesystem is a virtual filesystem that the kernel uses to