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mm/kmemleak.c: change error at _write when kmemleak is disabled

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According to POSIX, EBUSY means that the "device or resource is busy", and
this can lead to people thinking that the file
`/sys/kernel/debug/kmemleak/` is somehow locked or being used by other
process.  Change this error code to a more appropriate one.

Link: http://lkml.kernel.org/r/20190612155231.19448-1-andrealmeid@collabora.com
Signed-off-by: André Almeida <andrealmeid@collabora.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
André Almeida 2019-07-11 20:53:43 -07:00 committed by Linus Torvalds
parent 6ef9056952
commit 4e4dfce227
1 changed files with 1 additions and 1 deletions
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mm/kmemleak.c
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@ -1866,7 +1866,7 @@ static ssize_t kmemleak_write(struct file *file, const char __user *user_buf,
}
if (!kmemleak_enabled) {
ret = -EBUSY;
ret = -EPERM;
goto out;
}