Re: [PATCH 2/6] UBI: Fastmap: Don't allocate new ubi_wl_entry objects

From: Tanya Brokhman
Date: Mon Dec 08 2014 - 04:37:34 EST


On 12/8/2014 11:14 AM, Richard Weinberger wrote:
Am 08.12.2014 um 09:36 schrieb Tanya Brokhman:
On 11/30/2014 1:35 PM, Richard Weinberger wrote:
There is no need to allocate new ones every time, we can reuse
the existing ones.
This makes the code cleaner and more easy to follow.

Signed-off-by: Richard Weinberger <richard@xxxxxx>
---
drivers/mtd/ubi/fastmap.c | 31 +++++--------------------------
drivers/mtd/ubi/wl.c | 11 +++++++----
2 files changed, 12 insertions(+), 30 deletions(-)

diff --git a/drivers/mtd/ubi/fastmap.c b/drivers/mtd/ubi/fastmap.c
index db3defd..9507702 100644
--- a/drivers/mtd/ubi/fastmap.c
+++ b/drivers/mtd/ubi/fastmap.c
@@ -1446,19 +1446,6 @@ int ubi_update_fastmap(struct ubi_device *ubi)
}

new_fm->used_blocks = ubi->fm_size / ubi->leb_size;

Not related to this patch, but looking at this function it got me thinking: why do we need to re-calculate new_fm->used_blocks (and check calculated value) each time? fm_size
doesn't changed at runtime. leb_size sure does not, so fm->used_blocks can be ubi device parameter and calculated & tested only once, and not each time we write fastmap. Correct?

If you dig deeper into the patch set you'll notice that the fastmap size can change. :-)


oh, ok. sorry, still in the middle of the review.

Thanks,
//richard



Thanks,
Tanya Brokhman
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