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md: improve errno return when setting array_size

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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 <[email protected]>
This commit is contained in:
NeilBrown 2009-05-26 09:41:17 +10:00
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;
}