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[PATCH] cpuset crapectomy

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Switched cpuset_common_file_read() to simple_read_from_buffer(), killed
a bunch of useless (and not quite correct - e.g.  min(size_t,ssize_t))
code.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Al Viro 2005-09-30 03:26:43 +01:00 committed by Linus Torvalds
parent 46d7031ecb
commit eacaa1f5aa
1 changed files with 1 additions and 11 deletions
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12
kernel/cpuset.c
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@ -968,8 +968,6 @@ static ssize_t cpuset_common_file_read(struct file *file, char __user *buf,
char *page;
ssize_t retval = 0;
char *s;
char *start;
ssize_t n;
if (!(page = (char *)__get_free_page(GFP_KERNEL)))
return -ENOMEM;
@ -999,15 +997,7 @@ static ssize_t cpuset_common_file_read(struct file *file, char __user *buf,
*s++ = '\n';
*s = '\0';
start = page + *ppos;
n = s - start;
/* Do nothing if *ppos is at the eof or beyond the eof. */
if (n <= 0)
goto out;
retval = n - copy_to_user(buf, start, min(n, nbytes));
*ppos += retval;
retval = simple_read_from_buffer(buf, nbytes, ppos, page, s - page);
out:
free_page((unsigned long)page);
return retval;