large or too small" and reword its intro(2) description to reflect
the present use for non-numerical out-of-range errors; resolves
Andrew Brown's PR standards/21004, the discussion of which was
dramatically sped up by repeated whipping from Perry Metzger. :-)
* vinvalbuf needs to be called without simplelocks held
* need to release the lock in opencount > 0 case
* need to release the lock before smbfs_findclose(), since that
can send a request to SMB server and attempt to pool_get() a request buffer
problem path found & testing by Martin Husemann, fix adresses PR kern/21067
to extract the physical address from the virtual.
On the ARM, also use the "read-only at MMU" indication to avoid a
redundant cache clean operation.
Other platforms should use these two as examples of how to use these
new pool/mbuf features to improve network performance. Note this requires
a platform to provide a working POOL_VTOPHYS().
Part 3 in a series of simple patches contributed by Wasabi Systems
to improve network performance.
in the mbuf header.
* Use the new cached paddr feature of the pool_cache API to record
the physical address of mbuf clusters. (We cannot use a ctor for
clusters, since clusters have no constructed form; they are merely
buffers).
Bus_dma back-ends may use the cached physical addresses to save having to
extract the physical address from virtual.
* Provide space in m_ext recording the vm_page *'s for an SOSEND_LOAN_CHUNK-
sized non-cluster external buffer. Use this in the sosend_loan code to
save having to extract the physical address from virtual and then look
up the vm_page *'s.
* Provide an indication that an external buffer is mapped read-only at
the MMU. Set this flag for the external buffer in the sosend_loan
case, since loaned pages are always mapped read-only. Bus_dma back-ends
may use this information to save cache flushing, since a cache flush of
a read-only mapping is redundant on some architectures (the cache would
have already been flushed when making the mapping read-only).
Part 2 in a series of simple patches contributed by Wasabi Systems
to improve network performance.
objects. Clients of the pool_cache API must consistently use
the "paddr" variants or not, otherwise behavior is undefined.
Enable this on Alpha, ARM, MIPS, and x86. Other platforms must
define POOL_VTOPHYS() in the appropriate manner in order to enable
the feature.
Part 1 of a series of simple patches contributed by Wasabi Systems
to improve network performance.
* Remove DEFAULT_PAGE_SIZE. We don't use PAGE_SIZE the way Mach did.
* In uvm_setpagesize(), if we are called with uvmexp.pagesize == 0,
then assert that PAGE_SIZE != 0 (i.e. a constant), and set uvmexp.pagesize
accordingly.
* Provide defaults for MIN_PAGE_SIZE and MAX_PAGE_SIZE if not defined
by <machine/vmparam.h>. If PAGE_SIZE is not a constant, MIN_PAGE_SIZE
and MAX_PAGE_SIZE must be provided.
* If MIN_PAGE_SIZE and MAX_PAGE_SIZE are not equal (i.e. PAGE_SIZE may
not be a constant in all configurations), then ensure that PAGE_SIZE
and friends expand to variable references for LKMs.
logic as used by <machine/param.h> to define constant PAGE_SIZE if
possible.
Also define the minimum and maximum PAGE_SIZE that might appear in
any given configuration (4K and 8K, respectively).
characters are typed fast one after the other (<10 ms).
The visual effect under vi(1) was even more impressive. ;-)
This bug was actually introduced inadvertantly in 1995 in rev 1.4.
replace the VOP__UNLOCK() macros with VOP_UNLOCK() directly - it just
obfuscates the code
similarily for VN_LOCK()->vn_lock()
unlock dvp before ntvattrget call in ntfs_lookup() in '..' case, not after
fix problem in ntfs_lookup() where PDIRUNLOCK was not set in one code path
after unlocking parent directory vnode
