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author	Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
	Sun, 5 Sep 2010 07:17:35 +0000 (16:17 +0900)
committer	Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
	Sat, 23 Oct 2010 00:24:38 +0000 (09:24 +0900)
commit	090fd5b10165033d7c30afde0a7e59141d820602
tree	cbb3ec5b29719457cd45f72624d03d7e31af4a4c	tree \| snapshot (tar.gz zip)
parent	c6e071884aca360a14c21757d760e76ec34b4894	commit \| diff

nilfs2: get rid of back pointer to writable sb instance

Nilfs object holds a back pointer to a writable super block instance
in nilfs->ns_writer, and this became eliminable since sb is now made
per device and all inodes have a valid pointer to it.

This deletes the ns_writer pointer and a reader/writer semaphore
protecting it.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>

fs/nilfs2/mdt.c		diff \| blob \| blame \| history
fs/nilfs2/recovery.c		diff \| blob \| blame \| history
fs/nilfs2/segment.c		diff \| blob \| blame \| history
fs/nilfs2/the_nilfs.c		diff \| blob \| blame \| history
fs/nilfs2/the_nilfs.h		diff \| blob \| blame \| history

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