md: fix resync speed calculation for restarted resyncs
commit26d0764d2bf7f6b8dcd5a99d85cc6b1c02b65da6
authorNeil Brown <neilb@suse.de>
Wed, 22 Aug 2007 22:57:45 +0000 (23 00:57 +0200)
committerAdrian Bunk <bunk@stusta.de>
Wed, 22 Aug 2007 22:57:45 +0000 (23 00:57 +0200)
treeaf57b73a8dc853df1abf34ec6a183ca35404c0e9
parent32b268195c968892eec3cdb328e2594e379a658b
md: fix resync speed calculation for restarted resyncs

We introduced 'io_sectors' recently so we could count the sectors that causes
io during resync separate from sectors which didn't cause IO - there can be a
difference if a bitmap is being used to accelerate resync.

However when a speed is reported, we find the number of sectors processed
recently by subtracting an oldish io_sectors count from a current
'curr_resync' count.  This is wrong because curr_resync counts all sectors,
not just io sectors.

So, add a field to mddev to store the curren io_sectors separately from
curr_resync, and use that in the calculations.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
drivers/md/md.c
include/linux/raid/md_k.h