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31932fae1e
freebsd-skq/sys/geom
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Alexander Kabaev 31932fae1e Do not pass unmapped buffers to drivers that cannot handle them 
In physio, check if device can handle unmapped IO and pass an
appropriately mapped buffer to the driver strategy routine. The
only driver in the tree that can handle unmapped buffers is one
exposed by GEOM, so mark it as such with the new flag in the
driver cdevsw structure.

This fixes insta-panics on hosts, running dconschat, as /dev/fwmem
is an example of the driver that makes use of physio routine, but
bypasses the g_down thread, where the buffer gets mapped normally.

Discussed with: kib (earlier version)
2013-03-26 01:17:06 +00:00
..
bde - Don't pass geom and provider names as format strings. 2012-11-20 12:32:18 +00:00
cache - Don't pass geom and provider names as format strings. 2012-11-20 12:32:18 +00:00
concat Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
eli Always initialize sc_ekey, because as of r238116 it is always used. 2012-08-10 18:43:29 +00:00
gate We don't need buffer to handle BIO_DELETE, so don't check buffer size for it. 2013-03-14 23:07:01 +00:00
journal Add flags argument to vfs_write_resume() and remove 2013-01-11 06:08:32 +00:00
label g_label_ntfs_taste: Abort taste is recsize == 0 2013-03-08 18:07:43 +00:00
linux_lvm Add some FEATURE macros for various GEOM classes. 2011-02-25 10:24:35 +00:00
mirror g_mirror: g_getattr() failure should not be fatal 2013-01-26 10:50:04 +00:00
mountver - Don't pass geom and provider names as format strings. 2012-11-20 12:32:18 +00:00
multipath Make GEOM MULTIPATH to report unmapped bio support if underling path report 2013-03-25 07:24:58 +00:00
nop - Don't pass geom and provider names as format strings. 2012-11-20 12:32:18 +00:00
part The geom_part provider supports unmapped bio iff the underlying 2013-03-19 14:50:24 +00:00
raid Add legacy support to geom raid to create a /dev/arX device for support 2013-03-08 20:07:32 +00:00
raid3 Allow to insert new component to geom_raid3 without specifying number. 2013-01-15 10:06:35 +00:00
sched - Don't pass geom and provider names as format strings. 2012-11-20 12:32:18 +00:00
shsec Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
stripe Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
uncompress Remove unneeded G_PF_CANDELETE flag. 2012-08-28 19:28:31 +00:00
uzip Remove unneeded G_PF_CANDELETE flag. 2012-08-28 19:28:31 +00:00
vinum Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
virstor In virstor_ctl_stop(), check for a valid softc before trying to update 2012-08-03 20:24:16 +00:00
zero Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
geom_aes.c - Don't pass geom and provider names as format strings. 2012-11-20 12:32:18 +00:00
geom_bsd_enc.c
geom_bsd.c Avoid to check the same cache line/variable from all the locking 2012-01-28 14:00:21 +00:00
geom_ccd.c Include sys/sbuf.h directly. 2011-07-11 05:22:31 +00:00
geom_ctl.c Finish r210923, 210926. Mark some devices as eternal. 2011-01-04 10:59:38 +00:00
geom_ctl.h
geom_dev.c Do not pass unmapped buffers to drivers that cannot handle them 2013-03-26 01:17:06 +00:00
geom_disk.c In GEOM DISK: 2013-03-25 05:45:24 +00:00
geom_disk.h A flag for the geom disk driver to indicate that it accepts the 2013-03-19 14:49:15 +00:00
geom_dump.c Do not hide stripeoffset from libgeom(3), it may be useful even when 2011-06-02 12:49:45 +00:00
geom_event.c Make g_wither_washer() to not loop by itself, but only when there was some 2013-03-24 03:15:20 +00:00
geom_flashmap.c - Correct signedness for casts; 2012-05-23 20:51:21 +00:00
geom_fox.c Add some FEATURE macros for various GEOM classes. 2011-02-25 10:24:35 +00:00
geom_int.h Make g_wither_washer() to not loop by itself, but only when there was some 2013-03-24 03:15:20 +00:00
geom_io.c Correct the page count when excess length is trimmed from the bio. 2013-03-21 22:36:43 +00:00
geom_kern.c Move the three geom kprocs as threads under a single pid. 2011-05-11 21:47:30 +00:00
geom_map.c Use %j to match intmax_t. 2012-07-01 05:22:13 +00:00
geom_mbr_enc.c
geom_mbr.c - Don't pass geom and provider names as format strings. 2012-11-20 12:32:18 +00:00
geom_pc98_enc.c
geom_pc98.c Avoid to check the same cache line/variable from all the locking 2012-01-28 14:00:21 +00:00
geom_redboot.c - Give geom_redboot taste of flash/spi. Now there is another provider 2010-02-03 01:12:19 +00:00
geom_slice.c - Don't pass geom and provider names as format strings. 2012-11-20 12:32:18 +00:00
geom_slice.h - Don't pass geom and provider names as format strings. 2012-11-20 12:32:18 +00:00
geom_subr.c Make g_wither_washer() to not loop by itself, but only when there was some 2013-03-24 03:15:20 +00:00
geom_sunlabel_enc.c
geom_sunlabel.c Include sys/sbuf.h directly. 2011-07-11 05:22:31 +00:00
geom_vfs.c Implement the concept of the unmapped VMIO buffers, i.e. buffers which 2013-03-19 14:13:12 +00:00
geom_vfs.h
geom_vol_ffs.c Add some FEATURE macros for various GEOM classes. 2011-02-25 10:24:35 +00:00
geom.h Implement the concept of the unmapped VMIO buffers, i.e. buffers which 2013-03-19 14:13:12 +00:00
notes