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Date: Sat, 25 Dec 2010 15:03:57 +0900 From: Akinobu Mita <akinobu.mita@...il.com> To: linux-kernel@...r.kernel.org Cc: Akinobu Mita <akinobu.mita@...il.com>, Jeff Dike <jdike@...toit.com>, user-mode-linux-devel@...ts.sourceforge.net Subject: [PATCH] uml: use simple_write_to_buffer Simplify write file operation for mmapper by using simple_write_to_buffer(). Signed-off-by: Akinobu Mita <akinobu.mita@...il.com> Cc: Jeff Dike <jdike@...toit.com> Cc: user-mode-linux-devel@...ts.sourceforge.net --- arch/um/drivers/mmapper_kern.c | 8 +------- 1 files changed, 1 insertions(+), 7 deletions(-) diff --git a/arch/um/drivers/mmapper_kern.c b/arch/um/drivers/mmapper_kern.c index 8501e7d..4ad91c6 100644 --- a/arch/um/drivers/mmapper_kern.c +++ b/arch/um/drivers/mmapper_kern.c @@ -37,13 +37,7 @@ static ssize_t mmapper_write(struct file *file, const char __user *buf, if (*ppos > mmapper_size) return -EINVAL; - if (count > mmapper_size - *ppos) - count = mmapper_size - *ppos; - - if (copy_from_user(&v_buf[*ppos], buf, count)) - return -EFAULT; - - return count; + return simple_write_to_buffer(v_buf, mmapper_size, ppos, buf, count); } static long mmapper_ioctl(struct file *file, unsigned int cmd, unsigned long arg) -- 1.7.3.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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