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* ufs: Fix mount check in ufs_fill_super()Satyam Sharma2007-10-171-7/+8
| | | | | | | | | | | | | | The current code skips the check to verify whether the filesystem was previously cleanly unmounted, if (flags & UFS_ST_MASK) == UFS_ST_44BSD or UFS_ST_OLD. This looks like an inadvertent bug that slipped in due to parantheses in the compound conditional to me, especially given that ufs_get_fs_state() handles the UFS_ST_44BSD case perfectly well. So, let's fix the compound condition appropriately. Signed-off-by: Satyam Sharma <satyam@infradead.org> Cc: Evgeniy Dushistov <dushistov@mail.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ufs: move non-layout parts of ufs_fs.h to fs/ufs/Christoph Hellwig2007-10-1712-2/+171
| | | | | | | | | | | | | | | Move prototypes and in-core structures to fs/ufs/ similar to what most other filesystems already do. I made little modifications: move also ufs debug macros and mount options constants into fs/ufs/ufs.h, this stuff also private for ufs. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Deprecate a.out ELF interpretersAndi Kleen2007-10-171-0/+8
| | | | | | | | | | | | | | | | | | | | | | | The Linux ELF loader is quite complicated and messy code (that could probably need a rewrite, but that's a different chapter). One particular messy part in it is the support for non ELF a.out ld.sos. This was originally added to make transition from a.out to ELF easier because an a.out ELF ld.so could be still build using an older a.out toolkit. But by now that should be fully obsolete and removing it would clean up binfmt_elf.c up a bit. I propose to deprecate this support and remove for 2.6.25. Drawback is that someone still runs their system with a.out ld.so they would need to update the ld.so when updating to a new kernel. This patch just adds an entry to the deprecation file and a printk warning users. [akpm@linux-foundation.org: better warning message] Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/autofs4/inode.c: kmalloc + memset conversion to kzallocMariusz Kozlowski2007-10-171-3/+1
| | | | | | | | | | fs/autofs4/inode.c | 10467 -> 10435 (-32 bytes) fs/autofs4/inode.o | 98576 -> 98552 (-24 bytes) Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl> Acked-by: Ian Kent <raven@themaw.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/afs/: possible cleanupsAdrian Bunk2007-10-1710-11/+17
| | | | | | | | | | | | | | | | | | | | | | | | This patch contains the following possible cleanups: - make the following needlessly global functions static: - rxrpc.c: afs_send_pages() - vlocation.c: afs_vlocation_queue_for_updates() - write.c: afs_writepages_region() - make the following needlessly global variables static: - mntpt.c: afs_mntpt_expiry_timeout - proc.c: afs_vlocation_states[] - server.c: afs_server_timeout - vlocation.c: afs_vlocation_timeout - vlocation.c: afs_vlocation_update_timeout - #if 0 the following unused function: - cell.c: afs_get_cell_maybe() - #if 0 the following unused variables: - callback.c: afs_vnode_update_timeout - cmservice.c: struct afs_cm_workqueue Signed-off-by: Adrian Bunk <bunk@stusta.de> Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* core_pattern: fix up a few miscellaneous bugsNeil Horman2007-10-171-2/+15
| | | | | | | | | | | | | | Fix do_coredump to detect a crash in the user mode helper process and abort the attempt to recursively dump core to another copy of the helper process, potentially ad-infinitum. [akpm@linux-foundation.org: cleanups] Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Cc: <martin.pitt@ubuntu.com> Cc: <wwoods@redhat.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* core_pattern: allow passing of arguments to user mode helper when ↵Neil Horman2007-10-171-3/+22
| | | | | | | | | | | | | | | | | core_pattern is a pipe A rewrite of my previous post for this enhancement. It uses jeremy's split_argv/free_argv library functions to translate core_pattern into an argv array to be passed to the user mode helper process. It also adds a translation to format_corename such that the origional value of RLIMIT_CORE can be passed to userspace as an argument. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Cc: <martin.pitt@ubuntu.com> Cc: <wwoods@redhat.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* core_pattern: ignore RLIMIT_CORE if core_pattern is a pipeNeil Horman2007-10-176-23/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For some time /proc/sys/kernel/core_pattern has been able to set its output destination as a pipe, allowing a user space helper to receive and intellegently process a core. This infrastructure however has some shortcommings which can be enhanced. Specifically: 1) The coredump code in the kernel should ignore RLIMIT_CORE limitation when core_pattern is a pipe, since file system resources are not being consumed in this case, unless the user application wishes to save the core, at which point the app is restricted by usual file system limits and restrictions. 2) The core_pattern code should be able to parse and pass options to the user space helper as an argv array. The real core limit of the uid of the crashing proces should also be passable to the user space helper (since it is overridden to zero when called). 3) Some miscellaneous bugs need to be cleaned up (specifically the recognition of a recursive core dump, should the user mode helper itself crash. Also, the core dump code in the kernel should not wait for the user mode helper to exit, since the same context is responsible for writing to the pipe, and a read of the pipe by the user mode helper will result in a deadlock. This patch: Remove the check of RLIMIT_CORE if core_pattern is a pipe. In the event that core_pattern is a pipe, the entire core will be fed to the user mode helper. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Cc: <martin.pitt@ubuntu.com> Cc: <wwoods@redhat.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ufs: implement show_optionsEvgeniy Dushistov2007-10-171-4/+39
| | | | | | | | | An implementation of show_options method for UFS. Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru> Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Add in SunOS 4.1.x compatible mode for UFSMark Fortescue2007-10-172-19/+72
| | | | | | | | | | | | | | | | | | | | | | | | | Add in support for SunOS 4.1.x flavor of BSD 4.2 UFS filing system Macros have been put in to alow suport for the old static table Cylinder Groups but this implementation does not use them yet. This also fixes Solaris UFS filing system access by disabling fast symbolic links as Sun's version of UFS does not support on-disk fast symbolic links. Tested by: Ppartitioning a new disk using SunOS 4.1.1, creating a UFS filing system on one of the partitions and writing some files to the filing system. Using Linux-2.6.22 (patched) to read the files and then write a shed load of files to the UFS partition. Using SunOS 4.1.1 to verify the filing system is OK and to check the files. The test host is a sun4c SS1 Clone. [akpm@linux-foundation.org: coding style fixes] [adobriyan@gmail.com: fix oops] Signed-off-by: Mark Fortescue <mark@mtfhpc.demon.co.uk> Cc: Evgeniy Dushistov <dushistov@mail.ru> Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* remove unused bh in calls to ext234_get_group_descEric Sandeen2007-10-174-37/+23
| | | | | | | | | | | | ext[234]_get_group_desc never tests the bh argument, and only sets it if it is passed in; it is perfectly happy with a NULL bh argument. But, many callers send one in and never use it. May as well call with NULL like other callers who don't use the bh. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs: remove the unused mempages parameterDenis Cheng2007-10-173-6/+6
| | | | | | | | | | | | | | | | Since the mempages parameter is actually not used, they should be removed. Now there is only files_init use the mempages parameter, files_init(mempages); but I don't think the adaptation to mempages in files_init is really useful; and if files_init also changed to the prototype void (*func)(void), the wrapper vfs_caches_init would also not need the mempages parameter. Signed-off-by: Denis Cheng <crquan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* report the per-irq statistics on all archesRavikiran G Thirumalai2007-10-171-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 4004c69ad68dd03733179277280ea2946990ba36 avoids too many remote cpu references while reporting per-irq stats. Since we will not have the same performance penalty of bringing in remote cpu cachelines while reporting per-irq stats anymore, we can now afford to be consistent and report this statistic on all arches, all configs. akpm: affects ia64, alpha and ppc64, mainly. Kiran earlier said: Read to /proc/stat takes: Plain: 2.622832 With speedup patch: 0.013194 With the per-irq stats commented out: 0.008124 So the performance problems which originally caused those architectures to disable this statistic should now be fixed up. Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ext4: show all mount optionsMiklos Szeredi2007-10-171-0/+72
| | | | | | | Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ext3: show all mount optionsMiklos Szeredi2007-10-171-0/+70
| | | | | | | Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ext2: show all mount optionsMiklos Szeredi2007-10-171-2/+59
| | | | | | | | | | | | | | | | | | | | | | | Using mtab is problematic for various reasons, one of them is that unprivileged mounts won't turn up in there. So we want to get rid of it, and use /proc/mounts instead. But most filesystems are lazy, and are not showing all mount options. Which means, that without mtab, the user won't be able to see some or all of the options. It would be nice if the generic code could remember the mount options, and show them without the need to add extra code to filesystems. But this is not easy, because different filesystems handle mount options given options, and not tough the rest. This is not taken into account by mount(8) either, so /etc/mtab will be broken in this case. This series fixes up ->show_options() in ext[234]. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* convert ill defined log2() to ilog2()Fengguang Wu2007-10-171-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | It's *wrong* to have #define log2(n) ffz(~(n)) It should be *reversed*: #define log2(n) flz(~(n)) or #define log2(n) fls(n) or just use ilog2(n) defined in linux/log2.h. This patch follows the last solution, recommended by Andrew Morton. Cc: <linux-ext4@vger.kernel.org> Cc: Mingming Cao <cmm@us.ibm.com> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Chris Ahna <christopher.j.ahna@intel.com> Cc: David Mosberger-Tang <davidm@hpl.hp.com> Cc: Kyle McMartin <kyle@parisc-linux.org> Cc: Dave Airlie <airlied@linux.ie> Cc: Dave Jones <davej@codemonkey.org.uk> Signed-off-by: Fengguang Wu <wfg@mail.ustc.edu.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Clean up duplicate includes in fs/ecryptfs/Jesper Juhl2007-10-171-1/+0
| | | | | | | | | | This patch cleans up duplicate includes in fs/ecryptfs/ Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Cc: Michael A Halcrow <mahalcro@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Clean up duplicate includes in fs/Jesper Juhl2007-10-172-2/+0
| | | | | | | | | This patch cleans up duplicate includes in fs/ Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs: use kmem_cache_zalloc insteadDenis Cheng2007-10-171-2/+1
| | | | | | Signed-off-by: Denis Cheng <crquan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/proc/mmu.c: headers butcheryAlexey Dobriyan2007-10-171-19/+2
| | | | | | | | | | | | | | | | | | | | | | | fs/proc/mmu.c consists of only one function which uses only: 1) struct vmalloc_info * 2) struct vm_struct * 3) struct vmalloc_info 4) vmlist 5) VMALLOC_TOTAL, VMALLOC_START, VMALLOC_END 6) read_lock, read_unlock 7) vmlist_lock 8) struct vm_struct This gives us linux/spinlock.h, asm/pgtable.h, "internal.h", linux/vmalloc.h. asm/pgtable.h uses PKMAP_BASE on i386, for which asm/highmem.h is needed. But, linux/highmem.h is actually used to make it compile everywhere. I'll deal later with this particular i386 surprise. Cross-compile tested on many archs and configs. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* do_poll: return -EINTR when signalledOleg Nesterov2007-10-171-7/+7
| | | | | | | | | | | | | | do_poll() checks signal_pending() but returns 0 when interrupted. This means the caller has to check signal_pending() again. Change it to return -EINTR when signal_pending() and count == 0. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Cc: Andi Kleen <ak@suse.de> Cc: Davide Libenzi <davidel@xmailserver.org> Cc: Vadim Lobanov <vlobanov@speakeasy.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* do_sys_poll: simplify playing with on-stack dataOleg Nesterov2007-10-171-56/+36
| | | | | | | | | | | | | | | | | | | Cleanup. Lessens both the source and compiled code (100 bytes) and imho makes the code much more understandable. With this patch "struct poll_list *head" always points to on-stack stack_pps, so we can remove all "is it on-stack" and "was it initialized" checks. Also, move poll_initwait/poll_freewait and -EINTR detection closer to the do_poll()'s callsite. [akpm@linux-foundation.org: fix warning (size_t != uint)] Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Looks-good-to: Andi Kleen <ak@suse.de> Cc: Davide Libenzi <davidel@xmailserver.org> Cc: Vadim Lobanov <vlobanov@speakeasy.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs: mark nibblemap constPhilippe De Muyter2007-10-175-5/+5
| | | | | | Signed-off-by: Philippe De Muyter <phdm@macqel.be> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/romfs/inode.c: trivial improvementsWANG Cong2007-10-171-2/+2
| | | | | | | | | | | | - There are no lists in fs/romfs/inode.c, so using list_entry is a bit confusing. Replace it with container_of. - It is unnecessary to cast the return value of kmem_cache_alloc, since it returns a void* pointer. Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* zisofs use mutex instead of semaphoreDave Young2007-10-171-20/+5
| | | | | | | | | | Use mutex instead of semaphore in fs/isofs/compress.c, and remove an unnecessary variable. Signed-off-by: Dave Young <hidave.darkstar@gmail.com> Acked-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* SLAB_PANIC more (proc, posix-timers, shmem)Alexey Dobriyan2007-10-171-3/+1
| | | | | | | | These aren't modular, so SLAB_PANIC is OK. Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Make unregister_binfmt() return voidAlexey Dobriyan2007-10-171-2/+1
| | | | | | | | | | | list_del() hardly can fail, so checking for return value is pointless (and current code always return 0). Nobody really cared that return value anyway. Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Use list_head in binfmt handlingAlexey Dobriyan2007-10-171-28/+6
| | | | | | | | | | | | | | Switch single-linked binfmt formats list to usual list_head's. This leads to one-liners in register_binfmt() and unregister_binfmt(). The downside is one pointer more in struct linux_binfmt. This is not a problem, since the set of registered binfmts on typical box is very small -- (ELF + something distro enabled for you). Test-booted, played with executable .txt files, modprobe/rmmod binfmt_misc. Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/reiserfs/: cleanupsAdrian Bunk2007-10-173-60/+4
| | | | | | | | | | | | | | | | | - remove the following no longer used functions: - bitmap.c: reiserfs_claim_blocks_to_be_allocated() - bitmap.c: reiserfs_release_claimed_blocks() - bitmap.c: reiserfs_can_fit_pages() - make the following functions static: - inode.c: restart_transaction() - journal.c: reiserfs_async_progress_wait() Signed-off-by: Adrian Bunk <bunk@stusta.de> Acked-by: Vladimir V. Saveliev <vs@namesys.com> Cc: Nick Piggin <npiggin@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Slab API: remove useless ctor parameter and reorder parametersChristoph Lameter2007-10-1744-57/+48
| | | | | | | | | | | | | | | | | | | | | Slab constructors currently have a flags parameter that is never used. And the order of the arguments is opposite to other slab functions. The object pointer is placed before the kmem_cache pointer. Convert ctor(void *object, struct kmem_cache *s, unsigned long flags) to ctor(struct kmem_cache *s, void *object) throughout the kernel [akpm@linux-foundation.org: coupla fixes] Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mm: count reclaimable pages per BDIPeter Zijlstra2007-10-172-0/+9
| | | | | | | | Count per BDI reclaimable pages; nr_reclaimable = nr_dirty + nr_unstable. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mm: bdi init hooksPeter Zijlstra2007-10-1712-3/+72
| | | | | | | | | provide BDI constructor/destructor hooks [akpm@linux-foundation.org: compile fix] Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* lib: percpu_counter_init error handlingPeter Zijlstra2007-10-173-15/+42
| | | | | | | | alloc_percpu can fail, propagate that error. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* lib: percpu_counter_sum_positivePeter Zijlstra2007-10-173-5/+5
| | | | | | | | | | s/percpu_counter_sum/&_positive/ Because its consitent with percpu_counter_read* Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* lib: percpu_counter_subPeter Zijlstra2007-10-173-3/+3
| | | | | | | | | | | | | | | | | | | Hugh spotted that some code does: percpu_counter_add(&counter, -unsignedlong) which, when the amount argument is of type s32, sort-of works thanks to two's-complement. However when we'd change the type to s64 this breaks on 32bit machines, because the promotion rules zero extend the unsigned number. Provide percpu_counter_sub() to hide the s64 cast. That is: percpu_counter_sub(&counter, foo) is equal to: percpu_counter_add(&counter, -(s64)foo); Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* lib: percpu_counter_addPeter Zijlstra2007-10-176-11/+11
| | | | | | | | | | s/percpu_counter_mod/percpu_counter_add/ Because its a better name, _mod implies modulo. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* nfs: remove congestion_end()Peter Zijlstra2007-10-171-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | These patches aim to improve balance_dirty_pages() and directly address three issues: 1) inter device starvation 2) stacked device deadlocks 3) inter process starvation 1 and 2 are a direct result from removing the global dirty limit and using per device dirty limits. By giving each device its own dirty limit is will no longer starve another device, and the cyclic dependancy on the dirty limit is broken. In order to efficiently distribute the dirty limit across the independant devices a floating proportion is used, this will allocate a share of the total limit proportional to the device's recent activity. 3 is done by also scaling the dirty limit proportional to the current task's recent dirty rate. This patch: nfs: remove congestion_end(). It's redundant, clear_bdi_congested() already wakes the waiters. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Cc: "J. Bruce Fields" <bfields@fieldses.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* x86: replace NT_PRXFPREG with ELF_CORE_XFPREG_TYPE #defineMark Nelson2007-10-172-8/+8
| | | | | | | | | | | | | | | | | | | | | | | | Replace NT_PRXFPREG with ELF_CORE_XFPREG_TYPE in the coredump code which allows for more flexibility in the note type for the state of 'extended floating point' implementations in coredumps. New note types can now be added with an appropriate #define. This does #define ELF_CORE_XFPREG_TYPE to be NT_PRXFPREG in all current users so there's are no change in behaviour. This will let us use different note types on powerpc for the Altivec/VMX state that some PowerPC cpus have (G4, PPC970, POWER6) and for the SPE (signal processing extension) state that some embedded PowerPC cpus from Freescale have. Signed-off-by: Mark Nelson <markn@au1.ibm.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Andi Kleen <ak@suse.de> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* partially fix up the lookup_one_noperm messChristoph Hellwig2007-10-172-24/+37
| | | | | | | | | | | | | | | | | | | | | | | Try to fix the mess created by sysfs braindamage. - refactor code internal to fs/namei.c a little to avoid too much duplication: o __lookup_hash_kern is renamed back to __lookup_hash o the old __lookup_hash goes away, permission checks moves to the two callers o useless inline qualifiers on above functions go away - lookup_one_len_kern loses it's last argument and is renamed to lookup_one_noperm to make it's useage a little more clear - added kerneldoc comments to describe lookup_one_len aswell as lookup_one_noperm and make it very clear that no one should use the latter ever. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Josef 'Jeff' Sipek <jsipek@cs.sunysb.edu> Cc: Miklos Szeredi <miklos@szeredi.hu> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* SELinux: Improve read/write performanceYuichi Nakamura2007-10-171-0/+4
| | | | | | | | | | | | | | It reduces the selinux overhead on read/write by only revalidating permissions in selinux_file_permission if the task or inode labels have changed or the policy has changed since the open-time check. A new LSM hook, security_dentry_open, is added to capture the necessary state at open time to allow this optimization. (see http://marc.info/?l=selinux&m=118972995207740&w=2) Signed-off-by: Yuichi Nakamura<ynakam@hitachisoft.jp> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: James Morris <jmorris@namei.org>
* Merge branch 'for-linus' of git://git.kernel.dk/data/git/linux-2.6-blockLinus Torvalds2007-10-162-17/+8
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://git.kernel.dk/data/git/linux-2.6-block: (63 commits) Fix memory leak in dm-crypt SPARC64: sg chaining support SPARC: sg chaining support PPC: sg chaining support PS3: sg chaining support IA64: sg chaining support x86-64: enable sg chaining x86-64: update pci-gart iommu to sg helpers x86-64: update nommu to sg helpers x86-64: update calgary iommu to sg helpers swiotlb: sg chaining support i386: enable sg chaining i386 dma_map_sg: convert to using sg helpers mmc: need to zero sglist on init Panic in blk_rq_map_sg() from CCISS driver remove sglist_len remove blk_queue_max_phys_segments in libata revert sg segment size ifdefs Fixup u14-34f ENABLE_SG_CHAINING qla1280: enable use_sg_chaining option ...
| * Merge branch 'barrier' into for-linusJens Axboe2007-10-161-16/+7
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| | * bio: make freeing of ->bi_io_vec conditional in bio_free()Jens Axboe2007-10-161-3/+6
| | | | | | | | | | | | | | | | | | | | | The empty barrier patches do not carry data, so they have no iovec attached. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| | * bio: use memset() in bio_init()Jens Axboe2007-10-161-13/+1
| | | | | | | | | | | | | | | | | | Use memset() to clear the bio, instead of doing each field manually. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * | splice: fix double kunmap() in vmsplice copy pathJens Axboe2007-10-161-1/+1
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The out label should not include the unmap, the only way to jump there already has unmapped the source. 00002000 f7c21a00 00000000 00000000 c0489036 00018e32 00000002 00000000 00001000 Call Trace: [<c0487dd9>] pipe_to_user+0xca/0xd3 [<c0488233>] __splice_from_pipe+0x53/0x1bd [<c0454947>] ------------[ cut here ]------------ filemap_fault+0x221/0x380 [<c0487d0f>] pipe_to_user+0x0/0xd3 [<c0489036>] sys_vmsplice+0x3b7/0x422 [<c045ec3f>] kernel BUG at mm/highmem.c:206! handle_mm_fault+0x4d5/0x8eb [<c041ed5b>] kmap_atomic+0x1c/0x20 [<c045d33d>] unmap_vmas+0x3d1/0x584 [<c045f717>] free_pgtables+0x90/0xa0 [<c041d84b>] pgd_dtor+0x0/0x1 [<c044d665>] audit_syscall_exit+0x2aa/0x2c6 [<c0407817>] do_syscall_trace+0x124/0x169 [<c0404df2>] syscall_call+0x7/0xb ======================= Code: 2d 00 d0 5b 00 25 00 00 e0 ff 29 invalid opcode: 0000 [#1] c2 89 d0 c1 e8 0c 8b 14 85 a0 6c 7c c0 4a 85 d2 89 14 85 a0 6c 7c c0 74 07 31 c9 4a 75 15 eb 04 <0f> 0b eb fe 31 c9 81 3d 78 38 6d c0 78 38 6d c0 0f 95 c1 b0 01 EIP: [<c045bbc3>] kunmap_high+0x51/0x8e SS:ESP 0068:f5960df0 SMP Modules linked in: netconsole autofs4 hidp nfs lockd nfs_acl rfcomm l2cap bluetooth sunrpc ipv6 ib_iser rdma_cm ib_cm iw_cmib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi scsi_transport_iscsi dm_mirror dm_multipath dm_mod video output sbs batteryac parport_pc lp parport sg i2c_piix4 i2c_core floppy cfi_probe gen_probe scb2_flash mtd chipreg tg3 e1000 button ide_cd serio_raw cdrom aic7xxx scsi_transport_spi sd_mod scsi_mod ext3 jbd ehci_hcd ohci_hcd uhci_hcd CPU: 3 EIP: 0060:[<c045bbc3>] Not tainted VLI EFLAGS: 00010246 (2.6.23 #1) EIP is at kunmap_high+0x51/0x8e Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* | lockdep: fixup the inode dir annotationPeter Zijlstra2007-10-161-9/+9
| | | | | | | | | | | | | | | | | | | | | | A slight oversight tripped lockdep debugging code, each lockdep class should have but a single init site. Rearange the code to make this true. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | ecryptfs: clean up page flag handlingMichael Halcrow2007-10-164-33/+39
| | | | | | | | | | | | | | | | | | | | | | | | The functions that eventually call down to ecryptfs_read_lower(), ecryptfs_decrypt_page(), and ecryptfs_copy_up_encrypted_with_header() should have the responsibility of managing the page Uptodate status. This patch gets rid of some of the ugliness that resulted from trying to push some of the page flag setting too far down the stack. Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | eCryptfs: replace magic numbersMichael Halcrow2007-10-161-3/+3
| | | | | | | | | | | | | | | | Replace some magic numbers with sizeof() equivalents. Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | eCryptfs: remove unused functions and kmem_cacheMichael Halcrow2007-10-165-539/+1
| | | | | | | | | | | | | | | | | | The switch to read_write.c routines and the persistent file make a number of functions unnecessary. This patch removes them. Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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