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export kernel_write(), convert open-coded instances

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Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Al Viro 2013-02-23 14:51:48 -05:00
commit 7bb307e894
5 changed files with 24 additions and 61 deletions
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5
fs/splice.c
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@ -569,7 +569,7 @@ static ssize_t kernel_readv(struct file *file, const struct iovec *vec,
return res;
}
static ssize_t kernel_write(struct file *file, const char *buf, size_t count,
ssize_t kernel_write(struct file *file, const char *buf, size_t count,
loff_t pos)
{
mm_segment_t old_fs;
@ -578,11 +578,12 @@ static ssize_t kernel_write(struct file *file, const char *buf, size_t count,
old_fs = get_fs();
set_fs(get_ds());
/* The cast to a user pointer is valid due to the set_fs() */
res = vfs_write(file, (const char __user *)buf, count, &pos);
res = vfs_write(file, (__force const char __user *)buf, count, &pos);
set_fs(old_fs);
return res;
}
EXPORT_SYMBOL(kernel_write);
ssize_t default_file_splice_read(struct file *in, loff_t *ppos,
struct pipe_inode_info *pipe, size_t len,