Preserve /etc/sysctl.conf when doing a binary update. This prevents, for
instance, the dreaded shared memory problem in PostgreSQL coming back to
haunt you after a binary update.
- Add a workaround for the fact that OFW doesn't guarantee that
devices can be opened multiple times simultaneously but we're
expected to be able to do so by the rest of the loader.
This fixes booting from disks attached to the on-board SCSI
controller of Sun Ultra 1 (previously this triggered a trap)
and probably also of AX1115 boards.
- While here, remove unused variables and add empty lines where
style(9) requires such.
In ofw_parsedev() check the return value of malloc() and protect
against a NULL pointer dereference when ofw_parsedev() is called
with a NULL path argument.
Use an ihandle_t to store the instance handle of an opened device
instead of a phandle_t (package handle). Since both are typedefed
to unsigned int, this is more or less cosmetic.
- Convert hme(4) to use TX side bus_dmamap_load_mbuf_sg(9).
- Move hardware counter reading/zeroing to hme_tick(). This saves
8 register access per interrupt. [1]
- Use imax macro for getting max. argument between two integers.
- Invoke bus_dmamap_sync(9) first before freeing mbuf.
- Check driver queue first to reduce locking operation in hme_start_locked()
and interrupt handler.
- Simplyfy watchdog timer setup in interrupt handler.
- Don't log normal errors such as RX overrun. If we have DMA stuck
condition, reinitialize the driver and log it.
Significant refactoring of the accounting code to improve locking and VFS
happiness, as well as correct other bugs:
- Replace notion of current and saved accounting credential/vnode with a
single credential/vnode and an acct_suspended flag. This simplifies the
accounting logic substantially.
- Replace acct_mtx with acct_sx, a sleepable lock held exclusively during
reconfiguration and space polling, but shared during log entry
generation. This avoids holding a mutex over sleepable VFS operations.
- Hold the sx lock over the duration of the I/O so that the vnode I/O
cannot occur after vnode close, which could occur previously if
accounting was disabled as a process exited.
- Write the accounting log entry with Giant conditionally acquired based
on the file system where the log is stored. Previously, the accounting
code relied on the caller acquiring Giant.
- Acquire Giant conditionally in the accounting callout based on the file
system where the accounting log is stored. Run the callout MPSAFE.
- Expose acct_suspended via a read-only sysctl so it is possibly to
programmatically determine whether accounting is suspended or not without
attempting to parse logs.
- Check both acct_vp and acct_suspended lock-free before entering the
accounting sx lock in acct().
- When accounting is disabled due to a VBAD vnode (i.e., forceable unmount),
generate a log message indicating accounting has been disabled.
- Correct a long-standing bug in how free space is calculated and compared
to the required space: generate and compare signed results, not unsigned
results, or negative free space will cause accounting to not be suspended
when required, or worse, incorrectly resumed once negative free space is
reached.
Check IFF_DRV_RUNNING in the re_intr() loop. It can disappear,
since re_rxeof() drops the lock for some time.
Reported & tested by: XueFeng Deng <dsnofe yahoo.com.cn>
the underlying drive had been hot-unplugged from the system.
This merges the following revisions:
Revision Path
1.94 src/sys/cam/scsi/scsi_cd.c
1.181 src/sys/cam/scsi/scsi_da.c
1.98 src/sys/geom/geom_disk.c
1.5 src/sys/geom/geom_disk.h
1.88 src/sys/geom/geom_subr.c
Finally bring in what was produced during Google SoC 2005:
Add functions to rename objects and to move a subdisk from one drive
to another.
Add manual page (finally).
Bring up-to-date the online help.
Plus several cleanups and whitespace fixes.
Finally bring in what was produced during Google SoC 2005:
Add functions to rename objects and to move a subdisk from one drive
to another.
Plus several whitespace/style fixes.
Since carp(4) interfaces presently are kinda fake yet possess
IP addresses, mark them with LOOPBACK so that routing daemons
take them easy for link-state routing protocols.
Reviewed by: glebius
Prevent backup CARP hosts from replying to arp requests, fixes strangeness
with some layer-3 switches. From Bill Marquette.
Tested by: Kazuaki Oda <kaakun highway.ne.jp>
