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23 October 2021, 00:29:24 UTC
Revision b74fd2826c5acce20e6f691437b2d19372bc2057 authored by NeilBrown on 07 May 2009, 02:47:19 UTC, committed by NeilBrown on 07 May 2009, 02:47:19 UTC 
md: fix loading of out-of-date bitmap.
 
When md is loading a bitmap which it knows is out of date, it fills
each page with 1s and writes it back out again.  However the
write_page call makes used of bitmap->file_pages and
bitmap->last_page_size which haven't been set correctly yet.  So this
can sometimes fail.

Move the setting of file_pages and last_page_size to before the call
to write_page.

This bug can cause the assembly on an array to fail, thus making the
data inaccessible.  Hence I think it is a suitable candidate for
-stable.

Cc: stable@kernel.org
Reported-by: Vojtech Pavlik <vojtech@suse.cz>
Signed-off-by: NeilBrown <neilb@suse.de>
1 parent b4348f3
History
Tip revision: b74fd2826c5acce20e6f691437b2d19372bc2057 authored by NeilBrown on 07 May 2009, 02:47:19 UTC
md: fix loading of out-of-date bitmap.
Tip revision: b74fd28
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