drbd: use rolling marks for resync speed calculation

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The current resync speed as displayed in /proc/drbd fluctuates a lot.
Using an array of rolling marks makes this calculation much more stable.
We used to have this (a long time ago with 0.7), but it got lost somehow.

If "stalled", do not discard the rest of the information, just add a
" (stalled)" tag to the progress line.

This patch also shortens a spinlock critical section somewhat, and
reduces the number of atomic operations in put_ldev.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>

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This commit is contained in:

Lars Ellenberg 2010-08-11 21:21:50 +02:00 • committed by Philipp Reisner

parent 0bb70bf601

commit 1d7734a0df

5 changed files with 79 additions and 45 deletions

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29

drivers/block/drbd/drbd_actlog.c

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27

drivers/block/drbd/drbd_int.h

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29

drivers/block/drbd/drbd_main.c

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27

drivers/block/drbd/drbd_proc.c

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14

drivers/block/drbd/drbd_worker.c

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