- Expand the scope of lk to cover not only interrupt races, but also
top-half races, which includes many new uses over global top-half
only data.
- Get rid of interlocked_sleep() and use msleep or BUF_LOCK where
appropriate.
- Use the lk mutex in place of the various hand rolled semaphores.
- Stop dropping the lk lock before we panic.
- Fix getdirtybuf() callers so that they reacquire access to whatever
softdep datastructure they were inxpecting in the failure/retry
case. Previously, sleeps in getdirtybuf() could leave us with
pointers to bad memory.
- Update handling of ffs to be compatible with ffs locking changes.
Sponsored By: Isilon Systems, Inc.
- Use the buffer lock on the superblock buf to serialize calls to
sbupdate.
- Set the MNTK_MPSAFE flag when QUOTA is not defined in the kernel.
Sponsored By: Isilon Systems, Inc.
it is now quite naturally protected by the ufsmount mutex.
- Use the ufs lock to protect various fields in struct fs, primarily the
cg summary needs protection to avoid allocation races. Several
functions have been slightly re-arranged to reduce the number of
lock operations.
- Adjust several functions (blkfree, freefile, etc.) to accept a
ufsmount as an argument so that we may access the ufs lock.
Sponsored By: Isilon Systems, Inc.
any per-instance global data that is not already protected by a
buf or vnode lock. Presently, only fields in ffs's struct fs utilize
this lock.
- Sort some ufsmount members so that fields used for quotas are grouped
together. This is in anticipation of quota locking.
Sponsored By: Isilon Systems, Inc.
caller may not be holding Giant, and namei() should acquire it as
necessary. HASGIANT is used to indicate when namei() is returning
with a reference to a vnode that requires giant, and giant is locked.
- Add the macro NDHASGIANT() which can be used in conjunction with
VFS_UNLOCK_GIANT() in callers who have marked the nd with MPSAFE.
Sponsored By: Isilon Systems, Inc.
must be held when any vnode owned by the filesystem is manipulated.
- Add VFS_LOCK_GIANT and VFS_UNLOCK_GIANT macros which are used to
conditionally lock and unlock Giant based on a particular mountpoint.
NetBSD went this route a while ago. FreeBSD originally tried this to
cope with multifunction cards. However, it turns out that we're
better off not worrying about the function number, and instead worry
about the function type for the function. This has worked well in
NetBSD, and all FreeBSD's relevant drivers have been converted.
# I'll rework the macros that specify them shortly, as soon as I can
# come up with a good, compatible way to deal...
- Rearrange the list of functions into categories.
- Remove the ulps column. It was appropriate for only some
of the functions in the list, and correct for even fewer
of them.
- Add some new paragraphs, and remove some old ones about
NaNs that may do more harm than good.
- Document precisions other than double-precision.
measurements suggest that higher degrees of parallelism for large
numbers of clients help performance substantially.
Submitted by: Eric Anderson <anderson at centtech dot com>
when using the callout subsystem. Show how the callout_pending(),
callout_active() and callout_deactivate() macros can be used to
achieve simpler race-free callout semantics in many situations.
- Although ldexp() is in libc for backwards compatibility, ldexpf() is
in its proper place in libm. Document both as being in libm.
- The ldexp() and ldexpf() functions conform to C99.
- Neither frexp() nor frexpf() set errno.
- Although frexp() is in libc for backwards compatibility, frexpf() is
in its proper place in libm. Document both as being in libm.
- The frexp() and frexpf() functions conform to C99.
rc.d/mountcritlocal and sed(1) is placed in /usr/bin/. Other useful tools
for this task are also placed in /usr/ (tr(1), awk(1)), so I implemented
local_tr() function which works simlar to tr(1).
Reported by: Amir Shalem <amir@boom.org.il>
MFC after: 1 week
Reviewed by: Kame Project (including Itojun-san, Jinmei-san and Suzuki-san)
Approved by: Robert Watson (robert at freebsd dot org)
Obtained from: Kame Project and OpenBSD
Replace manual pages that may have violated the IETF's Copyright.
All come from the Kame tree.
Several were from OpenBSD except for ip6.4, and the inet6* pages which were
rewritten by me.
All of the text is new and drawn from reading the code and
documentation.
Approved by: Robert Watson (robert at freebsd dot org)
Remove files in preparation for replacement with totally new versions
of the manual pages.
Update the Makefile to handle the new file to be added.
