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| author | Don Mullis <don.mullis@gmail.com> | 2010-03-05 13:43:15 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-06 11:26:35 -0800 |
| commit | 02b12b7a28faa2e9ed5a361cd08ea576ab1f1509 (patch) | |
| tree | 3a23cbc81230b478d76d934d5396df097888210d | |
| parent | 835cc0c8477fdbc59e0217891d6f11061b1ac4e2 (diff) | |
| download | linux-02b12b7a28faa2e9ed5a361cd08ea576ab1f1509.tar.bz2 | |
lib: revise list_sort() header comment
Clarify and correct header comment of list_sort().
Signed-off-by: Don Mullis <don.mullis@gmail.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Artem Bityutskiy <dedekind@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | lib/list_sort.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/lib/list_sort.c b/lib/list_sort.c index 362c10f1653f..4b5cb794c38b 100644 --- a/lib/list_sort.c +++ b/lib/list_sort.c @@ -81,17 +81,18 @@ static void merge_and_restore_back_links(void *priv, } /** - * list_sort - sort a list. - * @priv: private data, passed to @cmp + * list_sort - sort a list + * @priv: private data, opaque to list_sort(), passed to @cmp * @head: the list to sort * @cmp: the elements comparison function * - * This function implements "merge sort" which has O(nlog(n)) complexity. - * The list is sorted in ascending order. + * This function implements "merge sort", which has O(nlog(n)) + * complexity. * - * The comparison function @cmp is supposed to return a negative value if @a is - * less than @b, and a positive value if @a is greater than @b. If @a and @b - * are equivalent, then it does not matter what this function returns. + * The comparison function @cmp must return a negative value if @a + * should sort before @b, and a positive value if @a should sort after + * @b. If @a and @b are equivalent, and their original relative + * ordering is to be preserved, @cmp must return 0. */ void list_sort(void *priv, struct list_head *head, int (*cmp)(void *priv, struct list_head *a, |