md: tidy up set_bitmap_file

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1/ delay setting mddev->bitmap_info.file until 'f' looks
   usable, so we don't have to unset it.
2/ Don't allow bitmap file to be set if bitmap_info.file
   is already set.

Signed-off-by: NeilBrown <neilb@suse.de>

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This commit is contained in:

NeilBrown 2014-12-15 12:57:00 +11:00

parent f4ad3d38d4

commit 1e594bb24d

1 changed files with 9 additions and 7 deletions

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drivers/md/md.c

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