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    nilfs2: remove buffer locking from btree code · 30db4e6c
    Ryusuke Konishi 提交于
    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: NRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
    30db4e6c
btree.c 58.5 KB