and there may be a good reason for them being unallocated (eg. they're
nonsensical or not useful). The goal here is simply to reserve them
against accidental use by other code.
activated. Some of the things that get listed as "resources" aren't
necessarily suited for this.
(This shouldn't be a problem for any driver that correctly passes
RF_ACTIVE)
again (without this the rollback analysis was being lost). Should reduce
the write count for most workloads.
Submitted by: Craig A Soules <soules+@andrew.cmu.edu>
set of restrictions for cancelling an inode dependency (inodedep)
is somewhat stronger than originally coded. Since this check appears
in two places, we codify it into the function check_inode_unwritten
which we then call from the two sites, one freeing blocks and the
other freeing directory entries.
Submitted by: Steinar Haug via Matthew Dillon
so that they never try to lock an inode corresponding to ".." as this
can lead to deadlock. We observe that any inode with an updated link count
is always pushed into its buffer at the time of the link count change, so
we do not need to do a VOP_UPDATE, but merely find its buffer and write it.
The only time we need to get the inode itself is from the result of a
mkdir whose name will never be ".." and hence locking such an inode will
never request a lock above us in the filesystem tree. Thanks to Brian
Fundakowski Feldman for providing the test program that tickled soft updates
into hanging in "inode" sleep.
Submitted by: Brian Fundakowski Feldman <green@FreeBSD.org>
running. It turns out that trying to read the MAC address when there's
no firmware creates a zero length transfer. This apparently doesn't
hurt anything on a UHCI controller, but OHCI controllers generate an
IOERROR, and the device doesn't initialize.
Instead, check the bcdDevice revision code. We know this will be
different when the firmware is running, so if we detect the firmware's
code instead of the bare hardware's code, we skip the firmware load.
Spell diskcontroller as disk controller.
There is no more CMD640 option.
bad144 got axed. Reflect change.
Contract the /dev entries to one /dev/wd* entry which we call
wd device nodes to reflect the merger of character and block
devices.
Add small line to NOTES stating that wd will some be replaced
completely by ata/ad.
Suggested by: bde
