Function ll_rw_block

Ext4Fsd/linux.c:844–872

}

void ll_rw_block(int rw, int nr, struct buffer_head * bhs[])
{
    int i;

    for (i = 0; i < nr; i++) {

        struct buffer_head *bh = bhs[i];

        if (rw == SWRITE)
            lock_buffer(bh);
        else if (test_set_buffer_locked(bh))
            continue;

        if (rw == WRITE || rw == SWRITE) {
            if (test_clear_buffer_dirty(bh)) {
                get_bh(bh);
                submit_bh(WRITE, bh);
                continue;
            }
        } else {
            if (!buffer_uptodate(bh)) {
                get_bh(bh);
                submit_bh(rw, bh);
                continue;
            }
        }
        unlock_buffer(bh);
    }
}

int bh_submit_read(struct buffer_head *bh)
{