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* GFS2: Move generation number into "proper" part of inodeSteven Whitehouse2009-01-05
| | | | | | | | This moves the generation number from the gfs2_dinode_host into the gfs2_inode structure. Eventually the plan is to get rid of the gfs2_dinode_host structure completely. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: sparse annotation of gl->gl_spinHarvey Harrison2009-01-05
| | | | | | | | | | | | fs/gfs2/glock.c:308:5: warning: context problem in 'do_promote': '_spin_unlock' expected different context fs/gfs2/glock.c:308:5: context '*gl+28': wanted >= 1, got 0 fs/gfs2/glock.c:529:2: warning: context problem in 'do_xmote': '_spin_unlock' expected different context fs/gfs2/glock.c:529:2: context '*gl+28': wanted >= 1, got 0 fs/gfs2/glock.c:925:3: warning: context problem in 'add_to_queue': '_spin_unlock' expected different context fs/gfs2/glock.c:925:3: context '*gl+28': wanted >= 1, got 0 Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Fix up jdata writepage/delete_inodeSteven Whitehouse2009-01-05
| | | | | | | | | There is a bug in writepage and delete_inode which allows jdata files to invalidate pages from the address space without being in a transaction at the time. This causes problems in case the pages are in the journal. This patch fixes that case and prevents the resulting oops. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Rationalise header filesSteven Whitehouse2009-01-05
| | | | | | | | Move the contents of some headers which contained very little into more sensible places, and remove the original header files. This should make it easier to find things. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Support for FIEMAP ioctlSteven Whitehouse2009-01-05
| | | | | | | | | | | | | | | | | | This patch implements the FIEMAP ioctl for GFS2. We can use the generic code (aside from a lock order issue, solved as per Ted Tso's suggestion) for which I've introduced a new variant of the generic function. We also have one exception to deal with, namely stuffed files, so we do that "by hand", setting all the required flags. This has been tested with a modified (I could only find an old version) of Eric's test program, and appears to work correctly. This patch does not currently support FIEMAP of xattrs, but the plan is to add that feature at some future point. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Cc: Theodore Tso <tytso@mit.edu> Cc: Eric Sandeen <sandeen@redhat.com>
* Merge branch 'audit.b61' of ↵Linus Torvalds2009-01-04
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current * 'audit.b61' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current: audit: validate comparison operations, store them in sane form clean up audit_rule_{add,del} a bit make sure that filterkey of task,always rules is reported audit rules ordering, part 2 fixing audit rule ordering mess, part 1 audit_update_lsm_rules() misses the audit_inode_hash[] ones sanitize audit_log_capset() sanitize audit_fd_pair() sanitize audit_mq_open() sanitize AUDIT_MQ_SENDRECV sanitize audit_mq_notify() sanitize audit_mq_getsetattr() sanitize audit_ipc_set_perm() sanitize audit_ipc_obj() sanitize audit_socketcall don't reallocate buffer in every audit_sockaddr()
| * audit: validate comparison operations, store them in sane formAl Viro2009-01-04
| | | | | | | | | | | | | | | | | | | | | | Don't store the field->op in the messy (and very inconvenient for e.g. audit_comparator()) form; translate to dense set of values and do full validation of userland-submitted value while we are at it. ->audit_init_rule() and ->audit_match_rule() get new values now; in-tree instances updated. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * clean up audit_rule_{add,del} a bitAl Viro2009-01-04
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * make sure that filterkey of task,always rules is reportedAl Viro2009-01-04
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * audit rules ordering, part 2Al Viro2009-01-04
| | | | | | | | | | | | | | | | Fix the actual rule listing; add per-type lists _not_ used for matching, with all exit,... sitting on one such list. Simplifies "do something for all rules" logics, while we are at it... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * fixing audit rule ordering mess, part 1Al Viro2009-01-04
| | | | | | | | | | | | | | | | | | | | | | | | Problem: ordering between the rules on exit chain is currently lost; all watch and inode rules are listed after everything else _and_ exit,never on one kind doesn't stop exit,always on another from being matched. Solution: assign priorities to rules, keep track of the current highest-priority matching rule and its result (always/never). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * audit_update_lsm_rules() misses the audit_inode_hash[] onesAl Viro2009-01-04
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * sanitize audit_log_capset()Al Viro2009-01-04
| | | | | | | | | | | | | | | | * no allocations * return void * don't duplicate checked for dummy context Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * sanitize audit_fd_pair()Al Viro2009-01-04
| | | | | | | | | | | | | | * no allocations * return void Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * sanitize audit_mq_open()Al Viro2009-01-04
| | | | | | | | | | | | | | | | * don't bother with allocations * don't do double copy_from_user() * don't duplicate parts of check for audit_dummy_context() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * sanitize AUDIT_MQ_SENDRECVAl Viro2009-01-04
| | | | | | | | | | | | | | | | | | | | | | | | | | * logging the original value of *msg_prio in mq_timedreceive(2) is insane - the argument is write-only (i.e. syscall always ignores the original value and only overwrites it). * merge __audit_mq_timed{send,receive} * don't do copy_from_user() twice * don't mess with allocations in auditsc part * ... and don't bother checking !audit_enabled and !context in there - we'd already checked for audit_dummy_context(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * sanitize audit_mq_notify()Al Viro2009-01-04
| | | | | | | | | | | | | | | | | | * don't copy_from_user() twice * don't bother with allocations * don't duplicate parts of audit_dummy_context() * make it return void Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * sanitize audit_mq_getsetattr()Al Viro2009-01-04
| | | | | | | | | | | | | | | | * get rid of allocations * make it return void * don't duplicate parts of audit_dummy_context() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * sanitize audit_ipc_set_perm()Al Viro2009-01-04
| | | | | | | | | | | | | | | | * get rid of allocations * make it return void * simplify callers Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * sanitize audit_ipc_obj()Al Viro2009-01-04
| | | | | | | | | | | | | | | | * get rid of allocations * make it return void * simplify callers Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * sanitize audit_socketcallAl Viro2009-01-04
| | | | | | | | | | | | | | * don't bother with allocations * now that it can't fail, make it return void Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * don't reallocate buffer in every audit_sockaddr()Al Viro2009-01-04
| | | | | | | | | | | | | | No need to do that more than once per process lifetime; allocating/freeing on each sendto/accept/etc. is bloody pointless. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | rtc: add alarm/update irq interfacesAlessandro Zummo2009-01-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add standard interfaces for alarm/update irqs enabling. Drivers are no more required to implement equivalent ioctl code as rtc-dev will provide it. UIE emulation should now be handled correctly and will work even for those RTC drivers who cannot be configured to do both UIE and AIE. Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Cc: David Brownell <david-b@pacbell.net> Cc: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | fs: symlink write_begin allocation context fixNick Piggin2009-01-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With the write_begin/write_end aops, page_symlink was broken because it could no longer pass a GFP_NOFS type mask into the point where the allocations happened. They are done in write_begin, which would always assume that the filesystem can be entered from reclaim. This bug could cause filesystem deadlocks. The funny thing with having a gfp_t mask there is that it doesn't really allow the caller to arbitrarily tinker with the context in which it can be called. It couldn't ever be GFP_ATOMIC, for example, because it needs to take the page lock. The only thing any callers care about is __GFP_FS anyway, so turn that into a single flag. Add a new flag for write_begin, AOP_FLAG_NOFS. Filesystems can now act on this flag in their write_begin function. Change __grab_cache_page to accept a nofs argument as well, to honour that flag (while we're there, change the name to grab_cache_page_write_begin which is more instructive and does away with random leading underscores). This is really a more flexible way to go in the end anyway -- if a filesystem happens to want any extra allocations aside from the pagecache ones in ints write_begin function, it may now use GFP_KERNEL (rather than GFP_NOFS) for common case allocations (eg. ocfs2_alloc_write_ctxt, for a random example). [kosaki.motohiro@jp.fujitsu.com: fix ubifs] [kosaki.motohiro@jp.fujitsu.com: fix fuse] Signed-off-by: Nick Piggin <npiggin@suse.de> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: <stable@kernel.org> [2.6.28.x] Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> [ Cleaned up the calling convention: just pass in the AOP flags untouched to the grab_cache_page_write_begin() function. That just simplifies everybody, and may even allow future expansion of the logic. - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | viafb: fix crashes due to 4k stack overflowBruno Prémont2009-01-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The function viafb_cursor() uses 2 stack-variables of CURSOR_SIZE bits; CURSOR_SIZE is defined as (8 * 1024). Using up twice 1k on stack is too much for 4k-stack (though it works with 8k-stacks). Make those two variables kzalloc'ed to preserve stack space. Also merge the whole lot of local struct's in viafb_ioctl into a union so the stack usage gets minimized here as well. (struct's are only accessed in their indicidual IOCTL case) This second part is only compile-tested as I know of no userspace app using the IOCTLs. Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org> Cc: <JosephChan@via.com.tw> Cc: Krzysztof Helt <krzysztof.h1@poczta.fm> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | fs: introduce bgl_lock_ptr()Pekka Enberg2009-01-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As suggested by Andreas Dilger, introduce a bgl_lock_ptr() helper in <linux/blockgroup_lock.h> and add separate sb_bgl_lock() helpers to filesystem specific header files to break the hidden dependency to struct ext[234]_sb_info. Also, while at it, convert the macros to static inlines to try make up for all the times I broke Andrew Morton's tree. Acked-by: Andreas Dilger <adilger@sun.com> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | spi.h uses/needs device.hRandy Dunlap2009-01-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Include header files as used/needed: In file included from drivers/leds/leds-dac124s085.c:16: include/linux/spi/spi.h:66: error: field 'dev' has incomplete type include/linux/spi/spi.h: In function 'to_spi_device': include/linux/spi/spi.h:100: warning: type defaults to 'int' in declaration of '__mptr' ... Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | vmalloc.c: fix flushing in vmap_page_range()Adam Lackorzynski2009-01-04
| | | | | | | | | | | | | | | | | | | | | | The flush_cache_vmap in vmap_page_range() is called with the end of the range twice. The following patch fixes this for me. Signed-off-by: Adam Lackorzynski <adam@os.inf.tu-dresden.de> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | cgroups: fix a race between cgroup_clone and umountLi Zefan2009-01-04
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The race is calling cgroup_clone() while umounting the ns cgroup subsys, and thus cgroup_clone() might access invalid cgroup_fs, or kill_sb() is called after cgroup_clone() created a new dir in it. The BUG I triggered is BUG_ON(root->number_of_cgroups != 1); ------------[ cut here ]------------ kernel BUG at kernel/cgroup.c:1093! invalid opcode: 0000 [#1] SMP ... Process umount (pid: 5177, ti=e411e000 task=e40c4670 task.ti=e411e000) ... Call Trace: [<c0493df7>] ? deactivate_super+0x3f/0x51 [<c04a3600>] ? mntput_no_expire+0xb3/0xdd [<c04a3ab2>] ? sys_umount+0x265/0x2ac [<c04a3b06>] ? sys_oldumount+0xd/0xf [<c0403911>] ? sysenter_do_call+0x12/0x31 ... EIP: [<c0456e76>] cgroup_kill_sb+0x23/0xe0 SS:ESP 0068:e411ef2c ---[ end trace c766c1be3bf944ac ]--- Cc: Serge E. Hallyn <serue@us.ibm.com> Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Cc: Paul Menage <menage@google.com> Cc: "Serge E. Hallyn" <serue@us.ibm.com> Cc: Balbir Singh <balbir@in.ibm.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'cpus4096-for-linus-3' of ↵Linus Torvalds2009-01-03
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'cpus4096-for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (77 commits) x86: setup_per_cpu_areas() cleanup cpumask: fix compile error when CONFIG_NR_CPUS is not defined cpumask: use alloc_cpumask_var_node where appropriate cpumask: convert shared_cpu_map in acpi_processor* structs to cpumask_var_t x86: use cpumask_var_t in acpi/boot.c x86: cleanup some remaining usages of NR_CPUS where s/b nr_cpu_ids sched: put back some stack hog changes that were undone in kernel/sched.c x86: enable cpus display of kernel_max and offlined cpus ia64: cpumask fix for is_affinity_mask_valid() cpumask: convert RCU implementations, fix xtensa: define __fls mn10300: define __fls m32r: define __fls h8300: define __fls frv: define __fls cris: define __fls cpumask: CONFIG_DISABLE_OBSOLETE_CPUMASK_FUNCTIONS cpumask: zero extra bits in alloc_cpumask_var_node cpumask: replace for_each_cpu_mask_nr with for_each_cpu in kernel/time/ cpumask: convert mm/ ...
| * x86: setup_per_cpu_areas() cleanupCyrill Gorcunov2009-01-03
| | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup __alloc_bootmem and __alloc_bootmem_node do panic for us in case of fail so no need for additional checks here. Also lets use pr_*() macros for printing. Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * cpumask: fix compile error when CONFIG_NR_CPUS is not definedMike Travis2009-01-03
| | | | | | | | | | | | | | | | CONFIG_NR_CPUS will be defined for all arch's whether SMP or not, but it may not have made it into all arches yet. Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * cpumask: use alloc_cpumask_var_node where appropriateMike Travis2009-01-03
| | | | | | | | | | | | | | | | | | | | | | Impact: Reduce inter-node memory traffic. Reduces inter-node memory traffic (offloading the global system bus) by allocating referenced struct cpumasks on the same node as the referring struct. Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * cpumask: convert shared_cpu_map in acpi_processor* structs to cpumask_var_tRusty Russell2009-01-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: Reduce memory usage, use new API. This is part of an effort to reduce structure sizes for machines configured with large NR_CPUS. cpumask_t gets replaced by cpumask_var_t, which is either struct cpumask[1] (small NR_CPUS) or struct cpumask * (large NR_CPUS). (Changes to powernow-k* by <travis>.) Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86: use cpumask_var_t in acpi/boot.cRusty Russell2009-01-03
| | | | | | | | | | | | | | | | | | | | Impact: reduce stack size, use new API. Replace cpumask_t with cpumask_var_t. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86: cleanup some remaining usages of NR_CPUS where s/b nr_cpu_idsMike Travis2009-01-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: Reduce future system panics due to cpumask operations using NR_CPUS Insure that code does not look at bits >= nr_cpu_ids as when cpumasks are allocated based on nr_cpu_ids, these extra bits will not be defined. Also some other minor updates: * change in to use cpu accessor function set_cpu_present() instead of directly accessing cpu_present_map w/cpu_clear() [arch/x86/kernel/reboot.c] * use cpumask_of() instead of &cpumask_of_cpu() [arch/x86/kernel/reboot.c] * optimize some cpu_mask_to_apicid_and functions. Signed-off-by: Mike Travis <travis@sgi.com> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: put back some stack hog changes that were undone in kernel/sched.cMike Travis2009-01-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: prevents panic from stack overflow on numa-capable machines. Some of the "removal of stack hogs" changes in kernel/sched.c by using node_to_cpumask_ptr were undone by the early cpumask API updates, and causes a panic due to stack overflow. This patch undoes those changes by using cpumask_of_node() which returns a 'const struct cpumask *'. In addition, cpu_coregoup_map is replaced with cpu_coregroup_mask further reducing stack usage. (Both of these updates removed 9 FIXME's!) Also: Pick up some remaining changes from the old 'cpumask_t' functions to the new 'struct cpumask *' functions. Optimize memory traffic by allocating each percpu local_cpu_mask on the same node as the referring cpu. Signed-off-by: Mike Travis <travis@sgi.com> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86: enable cpus display of kernel_max and offlined cpusMike Travis2009-01-03
| | | | | | | | | | | | | | | | | | | | | | Impact: enables /sys/devices/system/cpu/{kernel_max,offline} user interface By setting total_cpus, the drivers/base/cpu.c will display the values of kernel_max (NR_CPUS-1) and the offlined cpu map. Signed-off-by: Mike Travis <travis@sgi.com> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * ia64: cpumask fix for is_affinity_mask_valid()Ingo Molnar2009-01-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: build fix on ia64 ia64's default_affinity_write() still had old cpumask_t usage: /home/mingo/tip/kernel/irq/proc.c: In function `default_affinity_write': /home/mingo/tip/kernel/irq/proc.c:114: error: incompatible type for argument 1 of `is_affinity_mask_valid' make[3]: *** [kernel/irq/proc.o] Error 1 make[3]: *** Waiting for unfinished jobs.... update it to cpumask_var_t. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * cpumask: convert RCU implementations, fixIngo Molnar2009-01-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup This warning: kernel/rcuclassic.c: In function ‘rcu_start_batch’: kernel/rcuclassic.c:397: warning: passing argument 1 of ‘cpumask_andnot’ from incompatible pointer type triggers because one usage site of rcp->cpumask was not converted to to_cpumask(rcp->cpumask). There's no ill effects of this bug. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * Merge branch 'master' of ↵Ingo Molnar2009-01-03
| |\ | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask into cpus4096-v2
| | * xtensa: define __flsRusty Russell2009-01-03
| | | | | | | | | | | | | | | | | | Like fls, but can't be handed 0 and returns the bit number. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | * mn10300: define __flsRusty Russell2009-01-03
| | | | | | | | | | | | | | | | | | Like fls, but can't be handed 0 and returns the bit number. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | * m32r: define __flsRusty Russell2009-01-03
| | | | | | | | | | | | | | | | | | Like fls, but can't be handed 0 and returns the bit number. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | * h8300: define __flsRusty Russell2009-01-03
| | | | | | | | | | | | | | | | | | Like fls, but can't be handed 0 and returns the bit number. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | * frv: define __flsRusty Russell2009-01-03
| | | | | | | | | | | | | | | | | | Like fls, but can't be handed 0 and returns the bit number. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | * cris: define __flsRusty Russell2009-01-03
| | | | | | | | | | | | | | | | | | Like fls, but can't be handed 0 and returns the bit number. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * | Merge branch 'master' of ↵Mike Travis2009-01-03
| |\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask into merge-rr-cpumask Conflicts: arch/x86/kernel/io_apic.c kernel/rcuclassic.c kernel/sched.c kernel/time/tick-sched.c Signed-off-by: Mike Travis <travis@sgi.com> [ mingo@elte.hu: backmerged typo fix for io_apic.c ] Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * cpumask: CONFIG_DISABLE_OBSOLETE_CPUMASK_FUNCTIONSRusty Russell2008-12-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: new debug CONFIG options This helps find unconverted code. It currently breaks compile horribly, but we never wanted a flag day so that's expected. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | * cpumask: zero extra bits in alloc_cpumask_var_nodeRusty Russell2008-12-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: extra safety checks during transition When CONFIG_CPUMASKS_OFFSTACK is set, the new cpumask_ operators only use bits up to nr_cpu_ids, not NR_CPUS. Using the old cpus_ operators on these masks can mean accessing undefined bits. After some discussion, Mike and I decided to err on the side of caution; we zero the "undefined" bits in alloc_cpumask_var_node() until all the old cpumask functions are removed. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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