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md: improve errno return when setting array_size 

Instead of always returns EINVAL if anything goes wrong
when setting the array size, add the option of
  E2BIG
if the size requested is too large.  This makes it easier
for user-space to be sure what went wrong.

Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown 2009-05-26 09:41:17 +10:00
parent 62e1e389f8
commit 2b69c83924
1 changed files with 1 additions and 1 deletions
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2
drivers/md/md.c
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@ -3683,7 +3683,7 @@ array_size_store(mddev_t *mddev, const char *buf, size_t len)
if (strict_blocks_to_sectors(buf, &sectors) < 0)
return -EINVAL;
if (mddev->pers && mddev->pers->size(mddev, 0, 0) < sectors)
return -EINVAL;
return -E2BIG;
mddev->external_size = 1;
}