- 16 Jul, 2007 40 commits
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Jeff Dike authored
COWed devices can't handle more than 32 (64 on x86_64) sectors in one request due to the size of the bitmap being carried around in the io_thread_req. Enforce that by telling the block layer not to put too many sectors in requests to COWed devices. Signed-off-by:
Jeff Dike <jdike@linux.intel.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: <stable@kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Jeff Dike authored
Add some exports for hostfs that are required after Alberto Bertogli's fixes for accessing unlinked host files. Also did some style cleanups while I was here. Signed-off-by:
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Jeff Dike authored
UML had two wrapper procedures for kmalloc, um_kmalloc and um_kmalloc_atomic because the flag constants weren't available in userspace code. kern_constants.h had made kernel constants available for a long time, so there is no need for these wrappers any more. Rather, userspace code calls kmalloc directly with the userspace versions of the gfp flags. kmalloc isn't a real procedure, so I had to essentially copy the inline wrapper around __kmalloc. vmalloc also had its own wrapper for no good reason. This is now gone. Signed-off-by:
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Jeff Dike authored
run_helper and run_helper_thread had arguments which were the same in all callers. run_helper's stack_out was always NULL and run_helper_thread's stack_order was always 0. These are now gone, and the constants folded into the code. Also fixed leaks of the helper stack in the AIO and SIGIO code. Signed-off-by:
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Jeff Dike authored
Cleanup of the SIGWINCH support. Some code and comment reformatting. The stack used for SIGWINCH threads was leaked. This is now fixed by storing it with the pid and other information, and freeing it when the thread is killed. If something goes wrong with a WIGWINCH thread, and this is discovered in the interrupt handler, the winch record would leak. It is now freed, except that the IRQ isn't freed. This is hard to do from interrupt context. This has the side-effect that the IRQ system maintains a reference to the freed structure, but that shouldn't cause a problem since the descriptor is disabled. register_winch_irq is now much better about cleaning up after an initialization failure. Signed-off-by:
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Jeff Dike authored
If the host side of a console can't be opened, this will now produce visible error messages. enable_chan now returns a status and this is passed up to con_open and ssl_open, which will complain if anything went wrong. The default host device for the serial line driver is now a pts device rather than a pty device since lots of hosts have LEGACY_PTYS disabled. This had always been failing on such hosts, but silently. Signed-off-by:
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Jeff Dike authored
Cleanup, mostly style violations. Tidied the includes. getmaster returns a real errno, which pty_open returns if there's a problem. The printks now have severity. Changed os_* calls to call libc directly. Signed-off-by:
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Jeff Dike authored
Major tidying of the xterm console driver: got rid of the tt-mode gdb support tidied up the includes fixed lots of style violations replaced os_* calls with glibc calls in xterm.c all printk calls now have a severity indicator the error paths of xterm_open are closer to being right Signed-off-by:
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Eduard-Gabriel Munteanu authored
DEBUG_SHIRQ generates spurious interrupts, triggering handlers such as mconsole_interrupt() or line_interrupt(). They expect data to be available to be read from their sockets/pipes, but in the case of spurious interrupts, the host didn't actually send anything, so UML hangs in read() and friends. Setting those fd's as O_NONBLOCK makes DEBUG_SHIRQ-enabled UML kernels boot and run correctly. Signed-off-by:
Eduard-Gabriel Munteanu <maxdamage@aladin.ro> Signed-off-by:
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Jeff Dike authored
Add generic exit-time stack-depth checking to CONFIG_DEBUG_STACK_USAGE. This also adds UML support. Tested on UML and i386. [akpm@linux-foundation.org: cleanups, speedups, tweaks] Signed-off-by:
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Jeff Dike authored
For some reason, I was using kmalloc instead of get_free_pages for kernel stacks. Signed-off-by:
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Jeff Dike authored
It is theoretically possible for a request to finish and be freed between writing it to the I/O thread and updating the sector count. In this case, the update will dereference a freed pointer. To avoid this, I delay the update until processing the next sg segment, when the request pointer is known to be good. Signed-off-by:
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Robert P. J. Day authored
Replace the old-style structure member initializers with designated initializers. Signed-off-by:
Robert P. J. Day <rpjday@mindspring.com> Cc: Mikael Starvik <starvik@axis.com> Signed-off-by:
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Alan Cox authored
Add the needed constants and bits. The actual code is already in the tty layer and turned on by the definitions Signed-off-by:
Alan Cox <alan@redhat.com> Cc: Mikael Starvik <starvik@axis.com> Signed-off-by:
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Hirokazu Takata authored
Signed-off-by:
Hirokazu Takata <takata@linux-m32r.org> Signed-off-by:
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Alan Cox authored
Add the defines and constants needed for the M32R platform to support the arbitary speed tty ioctls. Signed-off-by:
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Mariusz Kozlowski authored
Signed-off-by:
Mariusz Kozlowski <m.kozlowski@tuxland.pl> Cc: Ian Molton <spyro@f2s.com> Signed-off-by:
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Alan Cox authored
Add the ioctls and values needed for this to the ARM26/ARM32 ports. The actual code has been in the base kernel for a while and automatically turns on when a port sets the required defines. Signed-off-by:
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Ivan Kokshaysky authored
isa_bus_to_virt() is still needed in a few places (lance.c, at least). When we switch the kernel to using -Werror-implicit-function-declaration, the lack of isa_bus_to_virt() breaks alpha allmodconfig builds. Add isa_bus_to_virt() and deprecate the ezisting ISA APIs, though it might be better to define these functions as BUG(), since virt_to_bus/bus_to_virt just do wrong things on a number of machines. [akpm@linux-foundation.org: build fix] Signed-off-by:
Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by:
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Sam Ravnborg authored
Fix the following section mismatch warnings: WARNING: arch/alpha/kernel/built-in.o(.text+0x7c78): Section mismatch: reference to .init.text:init_rtc_irq (between 'common_init_rtc' and 'timer_interrupt') WARNING: arch/alpha/kernel/built-in.o(.text+0x7c7c): Section mismatch: reference to .init.text:init_rtc_irq (between 'common_init_rtc' and 'timer_interrupt') WARNING: arch/alpha/kernel/built-in.o(.data+0x2c30): Section mismatch: reference to .init.text:srm_console_setup (between 'srmcons' and 'tsunami_pci_ops') In all three cases functions marked __init was called outside __init context. So the fix was to just drop the __init attribute. Signed-off-by:
Sam Ravnborg <sam@ravnborg.org> Cc: Meelis Roos <mroos@linux.ee> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by:
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Yoshinori Sato authored
Signed-off-by:
Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by:
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Yoshinori Sato authored
arch/h8300/kernel/ints.c is unused. Signed-off-by:
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Yoshinori Sato authored
- Add missing files - Add Makefile target - Change image base - Style fix Signed-off-by:
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Alan Cox authored
Add the needed constants and defines to activate the new tty code on this platform Signed-off-by:
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Greg Ungerer authored
Remove cache management cruft. This code is dead, all the cache manangement functions for the ColdFire exist in the header file include/asm-m68knommu/cacheflush.h. Signed-off-by:
Greg Ungerer <gerg@uclinux.org> Signed-off-by:
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Greg Ungerer authored
Clean out cruft. . remove include files not needed . remove not used CAT_ROMARRAY code . remove generic machine pointers not used . remove unused functions . fix email address in copyrights Signed-off-by:
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Greg Ungerer authored
Use THREAD_SIZE instead of a hard constant. Signed-off-by:
Philippe De Muyter <phdm@macqel.be> Signed-off-by:
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Greg Ungerer authored
Be consistent with VM mmap, implement expand_stack(). We can't actually do anything other than return an error in the no MMU case though. Signed-off-by:
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David Howells authored
Remove some dead chunks of code that are bounded by preprocessor conditionals controlled by apparently no-longer available config options. These are: CONFIG_BLK_DEV_BLKMEM CONFIG_CHR_DEV_FLASH CONFIG_BLK_DEV_FLASH CONFIG_CONSOLE [Found by Robert P. J. Day <rpjday@mindspring.com>] Signed-off-by:
David Howells <dhowells@redhat.com> Signed-off-by:
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David Howells authored
Be (self-)consistent and use CONFIG_GDB_CONSOLE everywhere rather than using CONFIG_GDBSTUB_CONSOLE in some places and not others. This is also then consistent with other archs. Also remove the gdbstub console device() op which doesn't seem to be necessary now (especially as it doesn't compile). [Found by Robert P. J. Day <rpjday@mindspring.com>] Signed-off-by:
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David Howells authored
Connect up new system calls. Signed-off-by:
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Miklos Szeredi authored
This is a straightforward split of do_mmap_pgoff() into two functions: - do_mmap_pgoff() checks the parameters, and calculates the vma flags. Then it calls - mmap_region(), which does the actual mapping Signed-off-by:
Miklos Szeredi <mszeredi@suse.cz> Acked-by:
Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by:
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akpm@linux-foundation.org authored
The do_loop_readv_writev implementation of readv breaks out of the loop as soon as a single read request didn't fill it's buffer: if (nr != len) break; The generic_file_aio_read version doesn't. So if it hits EOF before the end of the list of buffers, it will try again on the next buffer. If the file was extended in the mean time, this will produce a bad result. Signed-off-by:
Neil Brown <neilb@suse.de> Signed-off-by:
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Herbert van den Bergh authored
Fix a bug in mm/mlock.c on 32-bit architectures that prevents a user from locking more than 4GB of shared memory, or allocating more than 4GB of shared memory in hugepages, when rlim[RLIMIT_MEMLOCK] is set to RLIM_INFINITY. Signed-off-by:
Herbert van den Bergh <herbert.van.den.bergh@oracle.com> Acked-by:
Chris Mason <chris.mason@oracle.com> Cc: <stable@kernel.org> Signed-off-by:
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Paul Mundt authored
Currently slob is disabled if we're using sparsemem, due to an earlier patch from Goto-san. Slob and static sparsemem work without any trouble as it is, and the only hiccup is a missing slab_is_available() in the case of sparsemem extreme. With this, we're rid of the last set of restrictions for slob usage. Signed-off-by:
Paul Mundt <lethal@linux-sh.org> Acked-by:
Pekka Enberg <penberg@cs.helsinki.fi> Acked-by:
Matt Mackall <mpm@selenic.com> Cc: Christoph Lameter <clameter@sgi.com> Signed-off-by:
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Hugh Dickins authored
mspec_mmap was setting VM_LOCKED (without adjusting locked_vm): don't do that, it serves no purpose in 2.6, other than to mess up the locked_vm accounting - mspec's pages won't get reclaimed anyway. Thanks to Dmitry Monakhov for raising the issue. Signed-off-by:
Hugh Dickins <hugh@veritas.com> Acked-by:
Jes Sorensen <jes@sgi.com> Cc: Dmitry Monakhov <dmonakhov@sw.ru> Signed-off-by:
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Dan Aloni authored
Signed-off-by:
Dan Aloni <da-x@monatomic.org> Signed-off-by:
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Paul Mundt authored
This adds preliminary NUMA support to SLOB, primarily aimed at systems with small nodes (tested all the way down to a 128kB SRAM block), whether asymmetric or otherwise. We follow the same conventions as SLAB/SLUB, preferring current node placement for new pages, or with explicit placement, if a node has been specified. Presently on UP NUMA this has the side-effect of preferring node#0 allocations (since numa_node_id() == 0, though this could be reworked if we could hand off a pfn to determine node placement), so single-CPU NUMA systems will want to place smaller nodes further out in terms of node id. Once a page has been bound to a node (via explicit node id typing), we only do block allocations from partial free pages that have a matching node id in the page flags. The current implementation does have some scalability problems, in that all partial free pages are tracked in the global freelist (with contention due to the single spinlock). However, these are things that are being reworked for SMP scalability first, while things like per-node freelists can easily be built on top of this sort of functionality once it's been added. More background can be found in: http://marc.info/?l=linux-mm&m=118117916022379&w=2 http://marc.info/?l=linux-mm&m=118170446306199&w=2 http://marc.info/?l=linux-mm&m=118187859420048&w=2 and subsequent threads. Acked-by:
Christoph Lameter <clameter@sgi.com> Acked-by:
Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by:
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Jason Baron authored
In the new madvise_need_mmap_write() call we can avoid an extra case statement and function call as follows. Signed-off-by:
Jason Baron <jbaron@redhat.com> Cc: Nishanth Aravamudan <nacc@us.ibm.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by:
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Adrian Bunk authored
start_cpu_timer() should be __cpuinit (which also matches what it's callers are). __devinit didn't cause problems, it simply wasted a few bytes of memory for the common CONFIG_HOTPLUG_CPU=n case. Signed-off-by:
Adrian Bunk <bunk@stusta.de> Signed-off-by:
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