nilfs2: remove buffer locking from btree code

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lock_buffer() and unlock_buffer() uses in btree.c are eliminable
because btree functions gain buffer heads through nilfs_btnode_get(),
which never returns an on-the-fly buffer.

Although nilfs_clear_dirty_page() and nilfs_copy_back_pages() in
nilfs_commit_gcdat_inode() juggle btree node buffers of DAT, this is
safe because these operations are protected by a log writer lock or
the metadata file semaphore of DAT.

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

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Ryusuke Konishi 2009-11-11 22:37:59 +09:00

parent a49762fd11

commit 30db4e6c3d

1 changed files with 0 additions and 60 deletions

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fs/nilfs2/btree.c

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