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dm: publish array_too_big

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Move array_too_big to include/linux/device-mapper.h because it is
used by targets.

Remove the test from dm-raid1 as the number of mirror legs is limited
such that it can never fail.  (Even for stripes it seems rather
unlikely.)

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
This commit is contained in:
Mikulas Patocka
2008-10-21 17:44:57 +01:00
committed by Alasdair G Kergon
parent 7acedc5b98
commit d63a5ce3c0
4 changed files with 5 additions and 14 deletions
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3
drivers/md/dm-raid1.c
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@@ -1315,9 +1315,6 @@ static struct mirror_set *alloc_context(unsigned int nr_mirrors,
size_t len;
struct mirror_set *ms = NULL;
if (array_too_big(sizeof(*ms), sizeof(ms->mirror[0]), nr_mirrors))
return NULL;
len = sizeof(*ms) + (sizeof(ms->mirror[0]) * nr_mirrors);
ms = kzalloc(len, GFP_KERNEL);