Messages in this thread | | | Date | Thu, 29 May 2003 11:35:19 +0100 | From | Russell King <> | Subject | Re: rd.o module refcount problem |
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On Thu, May 29, 2003 at 03:55:10PM +0530, Maneesh Soni wrote: > The module ref count for rd.o module is not adjusted and remains 1 while > doing the following things. > > [root@llm01 mod]# insmod /sdb/linux-2.5.70/drivers/block/rd.o > [root@llm01 mod]# lsmod > Module Size Used by > rd 5568 0 - Live 0xf88b5000 > [root@llm01 mod]# mkfs -t ext2 /dev/ram0 > . > . > [root@llm01 mod]# lsmod > Module Size Used by > rd 5568 1 - Live 0xf88b5000 > > mount/umount of /dev/ram0 does not change the rd.o module ref count. > > So, who is supposed to release the rd.o module gracefully? > Also mount /dev/ram0 should hold a ref and umount should release the same. > > Same test on 2.4.20 looks correct and mount increments the ref count and > umount decrements the ref count.
I think you'll find you have to tell the ramdisk to invalidate its contents before the module count drops.
-- Russell King (rmk@arm.linux.org.uk) The developer of ARM Linux http://www.arm.linux.org.uk/personal/aboutme.html
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