BH_UPTODATE_OR_LOCK(9) The Linux VFS BH_UPTODATE_OR_LOCK(9)
NAME bh_uptodate_or_lock - Test whether the buffer is uptodate
SYNOPSIS int bh_uptodate_or_lock(struct buffer_head * bh);
ARGUMENTS bh struct buffer_head
DESCRIPTION Return true if the buffer is up-to-date and false, with the buffer locked, if not.
COPYRIGHT Kernel Hackers Manual 2.6. September 2010 BH_UPTODATE_OR_LOCK(9)