Author: sbruno
Date: Wed Aug 14 15:50:34 2013
New Revision: 254330
URL: http://svnweb.freebsd.org/changeset/base/254330
Log:
If sys/param.h MAXPHYS has been tuned to exceed MFI_MAXPHYS, the mfi(4)
real JBOD mode (SYS PD) would fail fairly reliably during I/O.
Steal the mfi_disk.c check for this condition (indirectly) when establishing
d_maxsize.
Reviewed by: ambrisko@
MFC after: 4 weeks
Sponsored by: Yahoo! Inc.
Modified:
head/sys/dev/mfi/mfi_syspd.c
Modified: head/sys/dev/mfi/mfi_syspd.c
==============================================================================
--- head/sys/dev/mfi/mfi_syspd.c Wed Aug 14 15:18:28 2013
(r254329)
+++ head/sys/dev/mfi/mfi_syspd.c Wed Aug 14 15:50:34 2013
(r254330)
@@ -126,7 +126,8 @@ mfi_syspd_attach(device_t dev)
sectors / (1024 * 1024 / secsize), sectors, sc->pd_id);
sc->pd_disk = disk_alloc();
sc->pd_disk->d_drv1 = sc;
- sc->pd_disk->d_maxsize = sc->pd_controller->mfi_max_io * secsize;
+ sc->pd_disk->d_maxsize = min(sc->pd_controller->mfi_max_io * secsize,
+ (sc->pd_controller->mfi_max_sge - 1) * PAGE_SIZE);
sc->pd_disk->d_name = "mfisyspd";
sc->pd_disk->d_open = mfi_syspd_open;
sc->pd_disk->d_close = mfi_syspd_close;
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