md: move GET_BITMAP_FILE ioctl out from mddev_lock.

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It makes more sense to report bitmap_info->file, rather than
bitmap->file (the later is only available once the array is
active).

With that change, use mddev->lock to protect bitmap_info being
set to NULL, and we can call get_bitmap_file() without taking
the mutex.

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 1e594bb24d

commit 4af1a04176

2 changed files with 33 additions and 26 deletions

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62

drivers/md/md.c

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1

drivers/md/md.h

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