diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2012-11-12 22:54:08 +0100 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2012-11-12 22:54:08 +0100 |
| commit | 8a6ff8a0a2bc51b29681aab093b349c9eb32acf5 (patch) | |
| tree | 7ee7315a4aa9b33cba73cf46e59187157a00866a /fs/block_dev.c | |
| parent | 65829ef5a0b9bdffa34b35479853d24e547cfde8 (diff) | |
| parent | 75984df05d86956541795f01e62d7dc67bc522fd (diff) | |
| download | linux-8a6ff8a0a2bc51b29681aab093b349c9eb32acf5.tar.gz linux-8a6ff8a0a2bc51b29681aab093b349c9eb32acf5.tar.xz | |
Merge tag 'for-3.8-at91_header_clean' of git://github.com/at91linux/linux-at91 into next/headers
From Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>:
arm: at91: mach header cleanup
This first patch serie start the cleanup of the header in mach
by moving all the platform data to include/linux/platform_data
and move the board header and drivers header next to them
* tag 'for-3.8-at91_header_clean' of git://github.com/at91linux/linux-at91:
arm: at91: move at91rm9200 rtc header in drivers/rtc
arm: at91: move reset controller header to arm/arm/mach-at91
arm: at91: move pit define to the driver
arm: at91: move at91_shdwc.h to arch/arm/mach-at91
arm: at91: move board header to arch/arm/mach-at91
arn: at91: move at91_tc.h to arch/arm/mach-at91
arm: at91 move at91_aic.h to arch/arm/mach-at91
arm: at91 move board.h to arch/arm/mach-at91
arm: at91: move platfarm_data to include/linux/platform_data/atmel.h
arm: at91: drop machine defconfig
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'fs/block_dev.c')
| -rw-r--r-- | fs/block_dev.c | 37 |
1 files changed, 35 insertions, 2 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c index b3c1d3dae77d..1a1e5e3b1eaf 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1661,6 +1661,39 @@ static int blkdev_mmap(struct file *file, struct vm_area_struct *vma) return ret; } +static ssize_t blkdev_splice_read(struct file *file, loff_t *ppos, + struct pipe_inode_info *pipe, size_t len, + unsigned int flags) +{ + ssize_t ret; + struct block_device *bdev = I_BDEV(file->f_mapping->host); + + percpu_down_read(&bdev->bd_block_size_semaphore); + + ret = generic_file_splice_read(file, ppos, pipe, len, flags); + + percpu_up_read(&bdev->bd_block_size_semaphore); + + return ret; +} + +static ssize_t blkdev_splice_write(struct pipe_inode_info *pipe, + struct file *file, loff_t *ppos, size_t len, + unsigned int flags) +{ + ssize_t ret; + struct block_device *bdev = I_BDEV(file->f_mapping->host); + + percpu_down_read(&bdev->bd_block_size_semaphore); + + ret = generic_file_splice_write(pipe, file, ppos, len, flags); + + percpu_up_read(&bdev->bd_block_size_semaphore); + + return ret; +} + + /* * Try to release a page associated with block device when the system * is under memory pressure. @@ -1699,8 +1732,8 @@ const struct file_operations def_blk_fops = { #ifdef CONFIG_COMPAT .compat_ioctl = compat_blkdev_ioctl, #endif - .splice_read = generic_file_splice_read, - .splice_write = generic_file_splice_write, + .splice_read = blkdev_splice_read, + .splice_write = blkdev_splice_write, }; int ioctl_by_bdev(struct block_device *bdev, unsigned cmd, unsigned long arg) |