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855be5b2c1
freebsd-dev/sys
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Marcel Moolenaar 855be5b2c1 Make sure not to do I/O for more than MAXPHYS bytes. Doing so can cause 
problems in our providers, such as a KASSERT in md(4). We can initiate
I/O for more than MAXPHYS bytes if we've been given a BIO for MAXPHYS
bytes, the blocks from which we're reading couldn't be compressed and
we had compression in preceeding blocks resulting in misalignment of
the blocks we're trying to read relative to the sector. We're forced to
round up the I/O length to make it an multiple of the sector size.

When we detect the condition, we'll reduce the block count and perform
a "short" read. In g_uzip_done() we need to consider the original I/O
length and stop early if we're about to deflate a block that we didn't
read. By using bio_completed in the cloned BIO and not bio_length to
check for this, we automatically and gracefully handle short reads that
our providers may be doing on top of the short reads we may initiate
ourselves.

Obtained from:	Juniper Networks, Inc.
2014-04-15 15:41:57 +00:00
..
amd64 Add support for emulating the byte move and sign extend instructions: 2014-04-15 15:11:10 +00:00
arm Updates to i.MX53: 2014-04-08 04:05:04 +00:00
boot Re-indent break statement. 2014-04-14 22:49:37 +00:00
bsm IFp4 @1192291: 2014-04-07 20:44:00 +00:00
cam Join CTL worker threads into one process for convenience. 2014-04-13 11:10:36 +00:00
cddl Ensure that all eight syscall arguments are available to dtrace_probe(), 2014-04-14 00:23:18 +00:00
compat In freebsd32_sendmsg(), replace the call to sockargs() followed by a 2014-04-05 18:56:01 +00:00
conf Really, really, really only allow this option for amd64/i386 builds. 2014-04-09 18:44:54 +00:00
contrib Implement the final missing sysctls by moving ipf_auth_softc_t from 2014-04-07 19:32:56 +00:00
crypto NO_MAN= has been deprecated in favor of MAN= for some time, go ahead 2014-04-13 05:21:56 +00:00
ddb ddb: Minor style cleanups. 2014-03-31 16:37:41 +00:00
dev Commit various fixes for the SolarFlare drivers, in particular 2014-04-14 16:31:56 +00:00
fs Use SMB_QUERY_FS_SIZE_INFO request to populate statfs structure. 2014-04-15 09:10:01 +00:00
gdb
geom Make sure not to do I/O for more than MAXPHYS bytes. Doing so can cause 2014-04-15 15:41:57 +00:00
gnu
i386 Really, really, really only allow this option for amd64/i386 builds. 2014-04-09 18:44:54 +00:00
ia64 Rename __wchar_t so it no longer conflicts with __wchar_t from clang 3.4 2014-04-01 14:46:11 +00:00
isa Remove vestiges of knowing the ISA bus, which we gave up on around 20 2014-03-19 21:03:04 +00:00
kern Refine r264422: set buf to NULL only when we don't allocate memory, 2014-04-14 21:02:20 +00:00
kgssapi
libkern
mips Change kernel/rootfs hints to use search patterns instead of absolute 2014-04-04 15:52:45 +00:00
modules Spell imgact_binmisc correctly 2014-04-09 03:46:04 +00:00
net Fix build for non-INET that was broken by r264469. 2014-04-15 13:28:54 +00:00
net80211 Remove IPX support. 2014-03-14 02:58:48 +00:00
netgraph Remove AppleTalk support. 2014-03-14 06:29:43 +00:00
netinet Some whitespace and style fixes. 2014-04-11 21:00:59 +00:00
netinet6 Properly release the in6_multi lock. 2014-04-12 02:05:31 +00:00
netipsec The check for local address spoofing lacks ifaddr locking. 2014-04-04 16:58:32 +00:00
netnatm
netpfil Free resources and error cases; re-indent a curly brace while here. 2014-04-13 21:13:33 +00:00
netsmb Update kernel inclusions of capability.h to use capsicum.h instead; some 2014-03-16 10:55:57 +00:00
nfs - Remove rt_metrics_lite and simply put its members into rtentry. 2014-03-05 01:17:47 +00:00
nfsclient
nfsserver Update kernel inclusions of capability.h to use capsicum.h instead; some 2014-03-16 10:55:57 +00:00
nlm Correct a typo in nlm_find_host_by_addr(): the intention of the 2014-03-11 00:25:55 +00:00
ofed Rename global cnt to vm_cnt to avoid shadowing. 2014-03-22 10:26:09 +00:00
opencrypto allow the kern.cryptodevallowsoft sysctl to enable symetric/hashes too... 2014-03-11 01:45:46 +00:00
pc98 Rename global cnt to vm_cnt to avoid shadowing. 2014-03-22 10:26:09 +00:00
pci Increase the number of TX DMA segments from 32 to 35. It turned 2014-03-31 01:54:59 +00:00
powerpc Small performance optimization. Clobber only cr0, rather than the entire CR. 2014-04-11 06:17:44 +00:00
rpc
security audit: plug FILEDESC_LOCK leak in audit_canon_path. 2014-03-21 01:30:33 +00:00
sparc64 Rename __wchar_t so it no longer conflicts with __wchar_t from clang 3.4 2014-04-01 14:46:11 +00:00
sys Hide internal details of sbintime_t implementation wrapping INT64_MAX into 2014-04-12 23:29:29 +00:00
teken
tools Update NetBSD Foundation copyrights to 2-clause BSD 2014-03-18 01:40:25 +00:00
ufs Update comment to explain search order reverted to historical order 2014-03-22 11:26:39 +00:00
vm Rename global cnt to vm_cnt to avoid shadowing. 2014-03-22 10:26:09 +00:00
x86 Make this compile with gcc. 2014-04-05 22:43:18 +00:00
xdr
xen Make this compile with gcc. 2014-04-05 22:43:18 +00:00
Makefile Remove AppleTalk support. 2014-03-14 06:29:43 +00:00