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[PATCH] fix for cpusets minor problem

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This patch fixes minor problem that the CPUSETS have when files in the
cpuset filesystem are read after lseek()-ed beyond the EOF.

Signed-off-by: KUROSAWA Takahiro <[email protected]>
Acked-by: Paul Jackson <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
KUROSAWA Takahiro 2005-09-09 13:02:10 -07:00 • committed by Linus Torvalds
commit 73a358d189
1 changed files with 4 additions and 0 deletions
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4
kernel/cpuset.c
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@ -972,6 +972,10 @@ static ssize_t cpuset_common_file_read(struct file *file, char __user *buf,
*s++ = '\n';
*s = '\0';
/* Do nothing if *ppos is at the eof or beyond the eof. */
if (s - page <= *ppos)
return 0;
start = page + *ppos;
n = s - start;
retval = n - copy_to_user(buf, start, min(n, nbytes));