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Date: Thu, 25 Aug 2011 17:07:51 +0200 From: Philipp Reisner <philipp.reisner@...bit.com> To: linux-kernel@...r.kernel.org, Jens Axboe <axboe@...nel.dk> Cc: drbd-dev@...ts.linbit.com Subject: [PATCH 055/118] drbd: Improve the drbd_find_overlap() documentation From: Andreas Gruenbacher <agruen@...bit.com> Describe how to reach any further overlapping intervals from the first overlap found. Signed-off-by: Philipp Reisner <philipp.reisner@...bit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@...bit.com> --- drivers/block/drbd/drbd_interval.c | 8 +++++--- 1 files changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/block/drbd/drbd_interval.c b/drivers/block/drbd/drbd_interval.c index 0d17eaa..14dbe2d 100644 --- a/drivers/block/drbd/drbd_interval.c +++ b/drivers/block/drbd/drbd_interval.c @@ -122,9 +122,11 @@ drbd_remove_interval(struct rb_root *root, struct drbd_interval *this) * @sector: start sector * @size: size, aligned to 512 bytes * - * Returns the interval overlapping with [sector, sector + size), or NULL. - * When there is more than one overlapping interval in the tree, the interval - * with the lowest start sector is returned. + * Returns an interval overlapping with [sector, sector + size), or NULL if + * there is none. When there is more than one overlapping interval in the + * tree, the interval with the lowest start sector is returned, and all other + * overlapping intervals will be on the right side of the tree, reachable with + * rb_next(). */ struct drbd_interval * drbd_find_overlap(struct rb_root *root, sector_t sector, unsigned int size) -- 1.7.4.1 -- 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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