diff options
| author | Alexander Motin <mav@FreeBSD.org> | 2013-06-15 12:46:38 +0000 |
|---|---|---|
| committer | Alexander Motin <mav@FreeBSD.org> | 2013-06-15 12:46:38 +0000 |
| commit | 2f87dfb0dbbb89a02cec8907d25703e3c75688b9 (patch) | |
| tree | 93e98579cf19cbf974c37c1515b78393c230912f /sys/cam | |
| parent | 8b02079f3689e5112eea231d552c46cef89a3f55 (diff) | |
| download | src-2f87dfb0dbbb89a02cec8907d25703e3c75688b9.tar.gz src-2f87dfb0dbbb89a02cec8907d25703e3c75688b9.zip | |
Restore use of polling mode for disk cache flush in case of kernel panic.
While I am not sure that any extra hardware access is a good idea after
panic, that is an existing behaviour that should better work correctly.
Notes
Notes:
svn path=/head/; revision=251792
Diffstat (limited to 'sys/cam')
| -rw-r--r-- | sys/cam/ata/ata_da.c | 12 | ||||
| -rw-r--r-- | sys/cam/scsi/scsi_da.c | 11 |
2 files changed, 19 insertions, 4 deletions
diff --git a/sys/cam/ata/ata_da.c b/sys/cam/ata/ata_da.c index 0a4d4a3789f6..721d5b5b3790 100644 --- a/sys/cam/ata/ata_da.c +++ b/sys/cam/ata/ata_da.c @@ -44,6 +44,7 @@ __FBSDID("$FreeBSD$"); #include <sys/eventhandler.h> #include <sys/malloc.h> #include <sys/cons.h> +#include <sys/proc.h> #include <sys/reboot.h> #include <geom/geom_disk.h> #endif /* _KERNEL */ @@ -1907,11 +1908,16 @@ adaflush(void) int error; CAM_PERIPH_FOREACH(periph, &adadriver) { - /* If we paniced with lock held - not recurse here. */ - if (cam_periph_owned(periph)) + softc = (struct ada_softc *)periph->softc; + if (SCHEDULER_STOPPED()) { + /* If we paniced with the lock held, do not recurse. */ + if (!cam_periph_owned(periph) && + (softc->flags & ADA_FLAG_OPEN)) { + adadump(softc->disk, NULL, 0, 0, 0); + } continue; + } cam_periph_lock(periph); - softc = (struct ada_softc *)periph->softc; /* * We only sync the cache if the drive is still open, and * if the drive is capable of it.. diff --git a/sys/cam/scsi/scsi_da.c b/sys/cam/scsi/scsi_da.c index 76a16ea599d8..e0e33d67f2fe 100644 --- a/sys/cam/scsi/scsi_da.c +++ b/sys/cam/scsi/scsi_da.c @@ -45,6 +45,7 @@ __FBSDID("$FreeBSD$"); #include <sys/malloc.h> #include <sys/cons.h> #include <sys/endian.h> +#include <sys/proc.h> #include <geom/geom.h> #include <geom/geom_disk.h> #endif /* _KERNEL */ @@ -3671,8 +3672,16 @@ dashutdown(void * arg, int howto) int error; CAM_PERIPH_FOREACH(periph, &dadriver) { - cam_periph_lock(periph); softc = (struct da_softc *)periph->softc; + if (SCHEDULER_STOPPED()) { + /* If we paniced with the lock held, do not recurse. */ + if (!cam_periph_owned(periph) && + (softc->flags & DA_FLAG_OPEN)) { + dadump(softc->disk, NULL, 0, 0, 0); + } + continue; + } + cam_periph_lock(periph); /* * We only sync the cache if the drive is still open, and |