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* [PATCH] cpusets: bitmap and mask remap operatorsPaul Jackson2005-10-314-0/+212
| | | | | | | | | | | | | | | | | | | | | In the forthcoming task migration support, a key calculation will be mapping cpu and node numbers from the old set to the new set while preserving cpuset-relative offset. For example, if a task and its pages on nodes 8-11 are being migrated to nodes 24-27, then pages on node 9 (the 2nd node in the old set) should be moved to node 25 (the 2nd node in the new set.) As with other bitmap operations, the proper way to code this is to provide the underlying calculation in lib/bitmap.c, and then to provide the usual cpumask and nodemask wrappers. This patch provides that. These operations are termed 'remap' operations. Both remapping a single bit and a set of bits is supported. Signed-off-by: Paul Jackson <pj@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] cpusets: confine pdflush to its cpusetPaul Jackson2005-10-311-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch keeps pdflush daemons on the same cpuset as their parent, the kthread daemon. Some large NUMA configurations put as much as they can of kernel threads and other classic Unix load in what's called a bootcpuset, keeping the rest of the system free for dedicated jobs. This effort is thwarted by pdflush, which dynamically destroys and recreates pdflush daemons depending on load. It's easy enough to force the originally created pdflush deamons into the bootcpuset, at system boottime. But the pdflush threads created later were allowed to run freely across the system, due to the necessary line in their startup kthread(): set_cpus_allowed(current, CPU_MASK_ALL); By simply coding pdflush to start its threads with the cpus_allowed restrictions of its cpuset (inherited from kthread, its parent) we can ensure that dynamically created pdflush threads are also kept in the bootcpuset. On systems w/o cpusets, or w/o a bootcpuset implementation, the following will have no affect, leaving pdflush to run on any CPU, as before. Signed-off-by: Paul Jackson <pj@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] cpusets: simple renamePaul Jackson2005-10-311-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | Add support for renaming cpusets. Only allow simple rename of cpuset directories in place. Don't allow moving cpusets elsewhere in hierarchy or renaming the special cpuset files in each cpuset directory. The usefulness of this simple rename became apparent when developing task migration facilities. It allows building a second cpuset hierarchy using new names and containing new CPUs and Memory Nodes, moving tasks from the old to the new cpusets, removing the old cpusets, and then renaming the new cpusets to be just like the old names, so that any knowledge that the tasks had of their cpuset names will still be valid. Leaf node cpusets can be migrated to other CPUs or Memory Nodes by just updating their 'cpus' and 'mems' files, but because no cpuset can contain CPUs or Nodes not in its parent cpuset, one cannot do this in a cpuset hierarchy without first expanding all the non-leaf cpusets to contain the union of both the old and new CPUs and Nodes, which would obfuscate the one-to-one migration of a task from one cpuset to another required to correctly migrate the physical page frames currently allocated to that task. Signed-off-by: Paul Jackson <pj@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] cpusets: dual semaphore locking overhaulPaul Jackson2005-10-312-138/+282
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Overhaul cpuset locking. Replace single semaphore with two semaphores. The suggestion to use two locks was made by Roman Zippel. Both locks are global. Code that wants to modify cpusets must first acquire the exclusive manage_sem, which allows them read-only access to cpusets, and holds off other would-be modifiers. Before making actual changes, the second semaphore, callback_sem must be acquired as well. Code that needs only to query cpusets must acquire callback_sem, which is also a global exclusive lock. The earlier problems with double tripping are avoided, because it is allowed for holders of manage_sem to nest the second callback_sem lock, and only callback_sem is needed by code called from within __alloc_pages(), where the double tripping had been possible. This is not quite the same as a normal read/write semaphore, because obtaining read-only access with intent to change must hold off other such attempts, while allowing read-only access w/o such intention. Changing cpusets involves several related checks and changes, which must be done while allowing read-only queries (to avoid the double trip), but while ensuring nothing changes (holding off other would be modifiers.) This overhaul of cpuset locking also makes careful use of task_lock() to guard access to the task->cpuset pointer, closing a couple of race conditions noticed while reading this code (thanks, Roman). I've never seen these races fail in any use or test. See further the comments in the code. Signed-off-by: Paul Jackson <pj@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] cpusets: remove depth counted locking hackPaul Jackson2005-10-311-65/+40
| | | | | | | | | | | | | | | | | | Remove a rather hackish depth counter on cpuset locking. The depth counter was avoiding a possible double trip on the global cpuset_sem semaphore. It worked, but now an improved version of cpuset locking is available, to come in the next patch, using two global semaphores. This patch reverses "cpuset semaphore depth check deadlock fix" The kernel still works, even after this patch, except for some rare and difficult to reproduce race conditions when agressively creating and destroying cpusets marked with the notify_on_release option, on very large systems. Signed-off-by: Paul Jackson <pj@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] cpuset cleanupPaul Jackson2005-10-311-1/+0
| | | | | | | | Remove one more useless line from cpuset_common_file_read(). Signed-off-by: Paul Jackson <pj@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] proc: fix of error path in proc_get_inode()Kirill Korotaev2005-10-311-7/+10
| | | | | | | | | | | | | | | | | | This patch fixes incorrect error path in proc_get_inode(), when module can't be get due to being unloaded. When try_module_get() fails, this function puts de(!) and still returns inode with non-getted de. There are still unresolved known bugs in proc yet to be fixed: - proc_dir_entry tree is managed without any serialization - create_proc_entry() doesn't setup de->owner anyhow, so setting it later manually is inatomic. - looks like almost all modules do not care whether it's de->owner is set... Signed-Off-By: Denis Lunev <den@sw.ru> Signed-Off-By: Kirill Korotaev <dev@sw.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fuse: clean up dead code related to nfs exportingMiklos Szeredi2005-10-311-2/+3
| | | | | | | | | | | | | | Remove last remains of NFS exportability support. The code is actually buggy (as reported by Akshat Aranya), since 'alias' will be leaked if it's non-null and alias->d_flags has DCACHE_DISCONNECTED. This is not an active bug, since there will never be any disconnected dentries. But it's better to get rid of the unnecessary complexity anyway. Signed-off-by: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] add_timer() of a pending timer is illegalAndrew Morton2005-10-311-1/+2
| | | | | | | | | In the recent timer rework we lost the check for an add_timer() of an already-pending timer. That check was useful for networking, so put it back. Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] block cleanups: Fix iosched module refcount leakNate Diller2005-10-311-1/+3
| | | | | | | | | | | | | | | | If the requested I/O scheduler is already in place, elevator_switch simply leaves the queue alone, and returns. However, it forgets to call elevator_put, so 'echo [current_sched] > /sys/block/[dev]/queue/scheduler' will leak a reference, causing the current_sched module to be permanently pinned in memory. Signed-off-by: Nate Diller <nate@namesys.com> Acked-by: Jens Axboe <axboe@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Typo fix: dot after newline in printk stringsJean Delvare2005-10-317-7/+7
| | | | | | | | Typo fix: dots appearing after a newline in printk strings. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] unify sys_ptrace prototypeChristoph Hellwig2005-10-3134-34/+17
| | | | | | | | | | Make sure we always return, as all syscalls should. Also move the common prototype to <linux/syscalls.h> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] adjust parisc sys_ptrace prototypeChristoph Hellwig2005-10-312-2/+1
| | | | | | | | | | | | Make the pid argument a long as on every other arcihtecture. Despite pid_t beeing a 32bit type even on 64bit parisc this is not an ABI change due to the parisc calling conventions. And even if it did it wouldn't matter too much because 64bit userspace on parisc is in an embrionic stage. Acked-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] posix-timers: use schedule_timeout() in common_nsleep()Oleg Nesterov2005-10-311-18/+1
| | | | | | | | | common_nsleep() reimplements schedule_timeout_interruptible() for unknown reason. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Typo fix: explictly -> explicitlyJean Delvare2005-10-313-3/+3
| | | | | | | | (akpm: I don't do typo patches, but one of these is in a printk string) Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] block cleanups: Add kconfig default iosched submenuNate Diller2005-10-312-17/+38
| | | | | | | | | | | | Add a kconfig submenu to select the default I/O scheduler, in case anticipatory is not compiled in or another default is preferred. Also, since no-op is always available, we should use it whenever the selected default is not. Signed-off-by: Nate Diller <nate@namesys.com> Acked-by: Jens Axboe <axboe@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Unify sys_tkill() and sys_tgkill()Vadim Lobanov2005-10-311-46/+25
| | | | | | | | | | | | The majority of the sys_tkill() and sys_tgkill() function code is duplicated between the two of them. This patch pulls the duplication out into a separate function -- do_tkill() -- and lets sys_tkill() and sys_tgkill() be simple wrappers around it. This should make it easier to maintain in light of future changes. Signed-off-by: Vadim Lobanov <vlobanov@speakeasy.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] kill sigqueue->lockOleg Nesterov2005-10-312-7/+4
| | | | | | | | | | This lock is used in sigqueue_free(), but it is always equal to current->sighand->siglock, so we don't need to keep it in the struct sigqueue. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fix de_thread vs it_real_fn() deadlockOleg Nesterov2005-10-311-1/+2
| | | | | | | | | | | | de_thread() calls del_timer_sync(->real_timer) under ->sighand->siglock. This is deadlockable, it_real_fn sends a signal and needs this lock too. Also, delete unneeded ->real_timer.data assignment. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Cc: Roland McGrath <roland@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] reduce sizeof(struct file)Eric Dumazet2005-10-318-15/+21
| | | | | | | | | | | | | | | Now that RCU applied on 'struct file' seems stable, we can place f_rcuhead in a memory location that is not anymore used at call_rcu(&f->f_rcuhead, file_free_rcu) time, to reduce the size of this critical kernel object. The trick I used is to move f_rcuhead and f_list in an union called f_u The callers are changed so that f_rcuhead becomes f_u.fu_rcuhead and f_list becomes f_u.f_list Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] clarify menuconfig /(search) help textRandy Dunlap2005-10-311-1/+2
| | | | | | | | | | | Add explicit text about - where menuconfig '/' (search) searches for strings, - that substrings are allowed, and - that regular expressions are supported. Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Whitespace and CodingStyle cleanup for lib/idr.cJesper Juhl2005-10-311-18/+17
| | | | | | | | | Cleanup trailing whitespace, blank lines, CodingStyle issues etc, for lib/idr.c Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] lib/string.c cleanup: remove pointless explicit castsJesper Juhl2005-10-311-10/+11
| | | | | | | | | | The first two hunks of the patch really belongs in patch 1, but I missed them on the first pass and instead of redoing all 3 patches I stuck them in this one. Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] lib/string.c cleanup: remove pointless register keywordJesper Juhl2005-10-311-2/+2
| | | | | | | | | | | | | | | | Removes a few pointless register keywords. register is merely a compiler hint that access to the variable should be optimized, but gcc (3.3.6 in my case) generates the exact same code with and without the keyword, and even if gcc did something different with register present I think it is doubtful we would want to optimize access to these variables - especially since this is generic library code and there are supposed to be optimized versions in asm/ for anything that really matters speed wise. (akpm: iirc, keyword register is a gcc no-op unless using -O0) Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] lib/string.c cleanup: whitespace and CodingStyle cleanupsJesper Juhl2005-10-311-60/+53
| | | | | | | | | Removes some blank lines, removes some trailing whitespace, adds spaces after commas and a few similar changes. Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] protect ide_cdrom_capacity by ifdefAmos Waterland2005-10-311-0/+2
| | | | | | | | | | | | | | | | | | | | The only call to ide_cdrom_capacity is in code protected by CONFIG_PROC_FS, so when that is not enabled, the compiler complains: drivers/ide/ide-cd.c:3259: warning: `ide_cdrom_capacity' defined but not used Here is a patch that fixes that. It provides some space savings for embedded systems that are not using procfs, as well: text data bss dec hex filename - 33540 6504 1032 41076 a074 drivers/ide/ide-cd.o + 33468 6480 1032 40980 a014 drivers/ide/ide-cd.o Signed-off-by: Amos Waterland <apw@us.ibm.com> Cc: Jens Axboe <axboe@suse.de> Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] open: cleanup in lookup_flags()Miklos Szeredi2005-10-311-6/+0
| | | | | | | | | | | lookup_flags() is only called from the non-create case, so it needn't check for O_CREAT|O_EXCL. Signed-off-by: Miklos Szeredi <miklos@szeredi.hu> Cc: Al Viro <viro@ftp.linux.org.uk> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Don't uselessly export task_struct to userspace in core dumpsEric W. Biederman2005-10-312-14/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | task_struct is an internal structure to the kernel with a lot of good information, that is probably interesting in core dumps. However there is no way for user space to know what format that information is in making it useless. I grepped the GDB 6.3 source code and NT_TASKSTRUCT while defined is not used anywhere else. So I would be surprised if anyone notices it is missing. In addition exporting kernel pointers to all the interesting kernel data structures sounds like the very definition of an information leak. I haven't a clue what someone with evil intentions could do with that information, but in any attack against the kernel it looks like this is the perfect tool for aiming that attack. So since NT_TASKSTRUCT is useless as currently defined and is potentially dangerous, let's just not export it. (akpm: Daniel Jacobowitz <dan@debian.org> "would be amazed" if anything was using NT_TASKSTRUCT). Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] remove timer debug fieldAndrew Morton2005-10-313-56/+2
| | | | | | | | | | | | | | | | Remove timer_list.magic and associated debugging code. I originally added this when a spinlock was added to timer_list - this meant that an all-zeroes timer became illegal and init_timer() was required. That spinlock isn't even there any more, although timer.base must now be initialised. I'll keep this debugging code in -mm. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Use alloc_percpu to allocate workqueues locallyChristoph Lameter2005-10-311-13/+20
| | | | | | | | | | | | | | This patch makes the workqueus use alloc_percpu instead of an array. The workqueues are placed on nodes local to each processor. The workqueue structure can grow to a significant size on a system with lots of processors if this patch is not applied. 64 bit architectures with all debugging features enabled and configured for 512 processors will not be able to boot without this patch. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] remove some more check_region stuffJeff Garzik2005-10-3111-228/+230
| | | | | | | | | | | | | | | | | | | | | | | | Removed some more references to check_region(). I checked these changes into the 'checkreg' branch of rsync://rsync.kernel.org/pub/scm/linux/kernel/git/jgarzik/misc-2.6.git The only valid references remaining are in: drivers/scsi/advansys.c drivers/scsi/BusLogic.c drivers/cdrom/sbpcd.c sound/oss/pss.c Remove last vestiges of ide_check_region() drivers/char/specialix: trim trailing whitespace drivers/char/specialix: eliminate use of check_region() Remove outdated and unused references to check_region() [sound oss] remove check_region() usage from cs4232, wavfront [netdrvr eepro] trim trailing whitespace [netdrvr eepro] remove check_region() usage Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] clarify help text for INIT_ENV_ARG_LIMITRandy Dunlap2005-10-311-2/+2
| | | | | | | | | Try to make the INIT_ENV_ARG_LIMIT help text more readable and understandable. Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] delete 2 unreachable statements in drivers/block/paride/pf.cNorbert Kiesel2005-10-311-4/+0
| | | | | | | | The last patch from Jens Axboe for drivers/block/paride/pf.c introduced pf_end_request() which sets pf_req to NULL. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ntp whitespace cleanupAndrew Morton2005-10-311-126/+126
| | | | | | | Fix bizarre 4-space coding style in the NTP code. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] NTP shift_right cleanupjohn stultz2005-10-313-61/+24
| | | | | | | | | | | | | | | | | | | | | | | | Create a macro shift_right() that avoids the numerous ugly conditionals in the NTP code that look like: if(a < 0) b = -(-a >> shift); else b = a >> shift; Replacing it with: b = shift_right(a, shift); This should have zero effect on the logic, however it should probably have a bit of testing just to be sure. Also replace open-coded min/max with the macros. Signed-off-by : John Stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] TIOC* compat ioctl handlingChristoph Hellwig2005-10-314-11/+5
| | | | | | | | | | | | | | | | TIOCSTART and TIOCSTOP are defined in asm/ioctls.h and asm/termios.h by various architectures but not actually implemented anywhere but in the IRIX compatibility layer, so remove their COMPATIBLE_IOCTL from parisc, ppc64 and sparc64. Move the TIOCSLTC COMPATIBLE_IOCTL to common code, guided by an ifdef to only show up on architectures that support it (same as the code handling it in tty_ioctl.c), aswell as it's brother TIOCGLTC that wasn't handled so far. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Add kthread_stop_sem()Alan Stern2005-10-312-2/+23
| | | | | | | | | Enhance the kthread API by adding kthread_stop_sem, for use in stopping threads that spend their idle time waiting on a semaphore. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] cfq-iosched: move tasklist walk to elevator.cChristoph Hellwig2005-10-313-22/+23
| | | | | | | | | | | | | | | | | | We're trying to get rid of as much as possible tasklist walks, or at least moving them to core code. This patch falls into the second category. Instead of walking the tasklist in cfq-iosched move that into elv_unregister. The added benefit is that with this change the as ioscheduler might be might unloadable more easily aswell. The new code uses read_lock instead of read_lock_irq because the tasklist_lock only needs irq disabling for writers. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Jens Axboe <axboe@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] introduce setup_timer() helperOleg Nesterov2005-10-313-10/+15
| | | | | | | | | | | Every user of init_timer() also needs to initialize ->function and ->data fields. This patch adds a simple setup_timer() helper for that. The schedule_timeout() is patched as an example of usage. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] little de_thread() cleanupOleg Nesterov2005-10-311-4/+3
| | | | | | | | Trivial, saves one 'if' branch in de_thread(). Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] reiserfs: [kv]free() checking cleanupJames Lamanna2005-10-312-18/+10
| | | | | | | | | Signed-off-by: James Lamanna <jlamanna@gmail.com> Signed-off-by: Domen Puncer <domen@coderock.org> Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ext3: Fix unmapped buffers in transaction's listsJan Kara2005-10-313-11/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the problem (BUG 4964) with unmapped buffers in transaction's t_sync_data list. The problem is we need to call filesystem's own invalidatepage() from block_write_full_page(). block_write_full_page() must call filesystem's invalidatepage(). Otherwise following nasty race can happen: proc 1 proc 2 ------ ------ - write some new data to 'offset' => bh gets to the transactions data list - starts truncate => i_size set to new size - mpage_writepages() - ext3_ordered_writepage() to 'offset' - block_write_full_page() - page->index > end_index+1 - block_invalidatepage() - discard_buffer() - clear_buffer_mapped() - commit triggers and finds unmapped buffer - BOOM! Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] smsc-ircc2: PM cleanup - do not close device when suspendingDmitry Torokhov2005-10-311-44/+85
| | | | | | | | | | | smsc-ircc2 - avoid closing network device when suspending; just release interrupt and disable DMA ourselves. Also make sure to reset chip when resuming. Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Cc: Jean Tourrilhes <jt@bougret.hpl.hp.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ide-scsi highmem cleanupAndrew Morton2005-10-311-26/+12
| | | | | | | | | It's not necessary to test PageHighmem in here - kmap_atomic() does the right thing. Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] s390, ccw - export modaliasBastian Blank2005-10-311-0/+19
| | | | | | | | | | | | This patch exports modalias for ccw devices. So you can do: modprobe `echo /sys/device/path_to_device/modalias` and the proper driver will automatically be loaded by userspace. Signed-off-by: Bastian Blank <waldi@debian.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] s390: export ipl device parametersHeiko Carstens2005-10-314-7/+367
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Sysfs interface to export ipl device parameters. Dependent on the ipl type the interface will look like this: - ccw ipl: /sys/firmware/ipl/device /ipl_type - fcp ipl: /sys/firmware/ipl/binary_parameter /bootprog /br_lba /device /ipl_type /lun /scp_data /wwpn - otherwise (unknown that is): /sys/firmware/ipl/ipl_type Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] s390: 3270 fullscreen viewRichard Hitt2005-10-316-69/+315
| | | | | | | | | | | Martin Schwidefsky <schwidefsky@de.ibm.com> Fix fullscreen view of the 3270 device driver. Signed-off-by: Richard Hitt <rbh00@utsglobal.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] i386: use -mcpu, not -mtune, for GCCs older than 3.4Paolo 'Blaisorblade' Giarrusso2005-10-311-5/+13
| | | | | | | | | | | | | | | | | | | | | | | I just noted that -mtune is used, which is only supported on recent GCCs; by reading http://gcc.gnu.org/gcc-3.4/changes.html, you see "-mcpu has been renamed to -mtune.", so for GCC < 3.4 we're not using any specific tuning in the appropriate cases. However -mcpu is deprecated, so use -mtune when possible. This was introduced by commit e9d4dce954a60dc23dd1d967766ca2347b780e54 of the old tree (between 2.6.10-rc3 and 2.6.10) by Linus Torvalds, to remove the use of -march, since that could trigger gcc using SSE on its own. But no attention was used about using -mcpu vs. -mtune. And btw, the old 2.6.4 code (for instance) was: cflags-$(CONFIG_MPENTIUMII) += $(call check_gcc,-march=pentium2,-march=i686) cflags-$(CONFIG_MPENTIUMIII) += $(call check_gcc,-march=pentium3,-march=i686) cflags-$(CONFIG_MPENTIUMM) += $(call check_gcc,-march=pentium3,-march=i686) cflags-$(CONFIG_MPENTIUM4) += $(call check_gcc,-march=pentium4,-march=i686) Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] uml: remove old UM_FASTCALL, and make the thing work againPaolo 'Blaisorblade' Giarrusso2005-10-312-4/+8
| | | | | | | | | | | | This was used in the old dark age of 2.4, ARCH_CFLAGS doesn't work any more since some time, and UM_FASTCALL was never used in 2.6. Instead, reintroduce the thing more properly now, directly in include/asm-um/linkage.h. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] uml: fix "reuse i386 cpu optimizations"Paolo 'Blaisorblade' Giarrusso2005-10-312-4/+5
| | | | | | | | | | Remove RWSEM_GENERIC_SPINLOCK, it's now defined (only if needed) by the underlying arch/i386/Kconfig.cpu. Leave it only for x86_64. Even there, it's totally wrong, as they even have the code to support XCHG_ADD. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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