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* [PATCH] 9p: fix name consistency problemsEric Van Hensbergen2006-03-256-23/+22
| | | | | | | | | | | | | | | | There were a number of conflicting naming schemes used in the v9fs project. The directory was fs/9p, but MAINTAINERS and Documentation referred to v9fs. The module name itself was 9p2000, and the file system type was 9P. This patch attempts to clean that up, changing all references to 9p in order to match the directory name. We'll also start using 9p instead of v9fs as our patch prefix. There is also a minor consistency cleanup in the options changing the name option to uname in order to more closely match the Plan 9 options. Signed-off-by: Eric Van Hensbergevan <ericvh@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] v9fs: update license boilerplateEric Van Hensbergen2006-03-2523-70/+46
| | | | | | | | | | Update license boilerplate to specify GPLv2 and remove the (at your option clause). This change was agreed to by all the copyright holders (approvals can be found on v9fs-developer mailing list). Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] v9fs: fix vfs_inode dereference before NULL checkEugene Teo2006-03-251-0/+2
| | | | | | | | | | | __getname, which in turn will call kmem_cache_alloc, may return NULL. Coverity bug #977 Signed-off-by: Eugene Teo <eugene.teo@eugeneteo.net> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] v9fs: add extension field to TcreateLatchesar Ionkov2006-03-256-51/+50
| | | | | | | | | | Implement a new way of creating special files. Instead of Tcreate+Twstat, add one more field to Tcreate that contains special file description. Signed-off-by: Latchesar Ionkov <lucho@ionkov.net> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] v9fs: print 9p messagesLatchesar Ionkov2006-03-257-3/+368
| | | | | | | | | | Print 9p messages. Signed-off-by: Latchesar Ionkov <lucho@ionkov.net> Cc: Eric Van Hensbergen <ericvh@ericvh.myip.org> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] v9fs: rename tids to tags to be consistent with Plan 9 documentationRuss Cox2006-03-254-11/+8
| | | | | | | | | The code talks about these things called tids, which I eventually figured out are tags. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] v9fs: consolidate trans_sock into trans_fdRuss Cox2006-03-253-436/+196
| | | | | | | | | Here is a new trans_fd.c that replaces the current trans_fd.c and trans_sock.c. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] kconfig: clarify memory debug optionsAndrew Morton2006-03-254-4/+4
| | | | | | | | | | | | | The Kconfig text for CONFIG_DEBUG_SLAB and CONFIG_DEBUG_PAGEALLOC have always seemed a bit confusing. Change them to: CONFIG_DEBUG_SLAB: "Debug slab memory allocations" CONFIG_DEBUG_PAGEALLOC: "Debug page memory allocations" Cc: "David S. Miller" <davem@davemloft.net> Cc: Hirokazu Takata <takata@linux-m32r.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] amiga: fix driver_register() return handling, remove zorro_module_init()Bjorn Helgaas2006-03-257-45/+7
| | | | | | | | | | | | | | | | | | | | | Remove the assumption that driver_register() returns the number of devices bound to the driver. In fact, it returns zero for success or a negative error value. zorro_module_init() used the device count to automatically unregister and unload drivers that found no devices. That might have worked at one time, but has been broken for some time because zorro_register_driver() returned either a negative error or a positive count (never zero). So it could only unregister on failure, when it's not needed anyway. This functionality could be resurrected in individual drivers by counting devices in their .probe() methods. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] EISA: tidy-up driver_register() return valueBjorn Helgaas2006-03-253-21/+20
| | | | | | | | | | | | Remove the assumption that driver_register() returns the number of devices bound to the driver. In fact, it returns zero for success or a negative error value. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Acked-by: Jeff Garzik <jgarzik@pobox.com> Acked-by: Marc Zyngier <maz@misterjones.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] hp300: fix driver_register() return handling, remove dio_module_init()Bjorn Helgaas2006-03-255-46/+11
| | | | | | | | | | | | | | | | | | | | | | | Remove the assumption that driver_register() returns the number of devices bound to the driver. In fact, it returns zero for success or a negative error value. dio_module_init() used the device count to automatically unregister and unload drivers that found no devices. That might have worked at one time, but has been broken for some time because dio_register_driver() returned either a negative error or a positive count (never zero). So it could only unregister on failure, when it's not needed anyway. This functionality could be resurrected in individual drivers by counting devices in their .probe() methods. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Philip Blundell <philb@gnu.org> Cc: Jochen Friedrich <jochen@scram.de> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] reiserfs: use balance_dirty_pages_ratelimited_nr in ↵Alexander Zarochentsev2006-03-251-1/+1
| | | | | | | | | | | reiserfs_file_write() Use the new balance_dirty_pages_ratelimited_nr in reiserfs "largeio" file write. Signed-off-by: Hans Reiser <reiser@namesys.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] initcall failure reportingAndrew Morton2006-03-251-7/+15
| | | | | | | | | | | | | | | | | | | We presently ignore the return values from initcalls. But that can carry useful debugging information. So print it out if it's non-zero. It turns out the -ENODEV happens quite a lot, due to built-in drivers which have no hardware to drive. So suppress that unless initcall_debug was specified. Also make the warning message more friendly by printing the name of the initcall function. Also drop the KERN_DEBUG from the initcall_debug message. If we specified inticall_debug then we obviously want to see the messages. Acked-by: Paul Jackson <pj@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] reiserfs: cleanupsVladimir V. Saveliev2006-03-253-10/+8
| | | | | | | | | | | Clean up several places where gcc issues warnings when -W is specified. Thanks to Neil for finding that. Signed-off-by: Vladimir V. Saveliev <vs@namesys.com> Cc: Neil Brown <neilb@cse.unsw.edu.au> Signed-off-by: Hans Reiser <reiser@namesys.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] parport: move PP_MAJOR from ppdev.h to major.hRene Herman2006-03-253-3/+3
| | | | | | | | | | Today I wondered about /dev/parport<n> after not seeing anything in drivers/parport register char-major-99. Having PP_MAJOR in include/linux/major.h would've allowed me to more quickly determine that it was the ppdev driver driving these. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] block/floppy: fix section mismatch warningsSam Ravnborg2006-03-251-1/+1
| | | | | | | | | | | | | | | | | In latest -mm a number of section mismatch warnings are generated for floppy.o like the following: WARNING: drivers/block/floppy.o - Section mismatch: reference to \ .init.data: from .text between 'init_module' (at offset 0x6976) and \ 'cleanup_module' The warning are caused by a reference to floppy_init() which is __init from init_module() which is not declared __init. Declaring init_module() _init fixes this. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ide: fix section mismatch warningSam Ravnborg2006-03-251-1/+1
| | | | | | | | | | | | | | | | | | In latest -mm ide-code.o gave a number of warnings like the following: WARNING: drivers/ide/ide-core.o - Section mismatch: reference to \ .init.text: from .text between 'init_module' (at offset 0x1f97) and \ 'cleanup_module' The warning was caused by init_module() calling parse_option() and ide_init() both declared __init. Declaring init_module() __init fixes the warnings. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> 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] inotify: lock avoidance with parent watch status in dentryNick Piggin2006-03-255-10/+117
| | | | | | | | | | | | | | | | | | | | | | Previous inotify work avoidance is good when inotify is completely unused, but it breaks down if even a single watch is in place anywhere in the system. Robin Holt notices that udev is one such culprit - it slows down a 512-thread application on a 512 CPU system from 6 seconds to 22 minutes. Solve this by adding a flag in the dentry that tells inotify whether or not its parent inode has a watch on it. Event queueing to parent will skip taking locks if this flag is cleared. Setting and clearing of this flag on all child dentries versus event delivery: this is no in terms of race cases, and that was shown to be equivalent to always performing the check. The essential behaviour is that activity occuring _after_ a watch has been added and _before_ it has been removed, will generate events. Signed-off-by: Nick Piggin <npiggin@suse.de> Cc: Robert Love <rml@novell.com> Cc: John McCutchan <ttb@tentacle.dhs.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] sysrq cleanupAndrew Morton2006-03-251-135/+115
| | | | | | | sysrq.c is fairly revolting. Fix. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fix 'defined but not used' warning in net/rxrpc/main.c::rxrpc_initialiseJesper Juhl2006-03-251-1/+1
| | | | | | | | | | net/rxrpc/main.c: In function `rxrpc_initialise': net/rxrpc/main.c:83: warning: label `error_proc' defined but not used Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Fix EDD to properly ignore signature of non-existing drivesAndrey Borzenkov2006-03-251-0/+2
| | | | | | | | | | Some BIOSes do not always set CF on error before return from int13. The patch adds additional check for status being zero (AH == 0). Signed-off-by: Andrey Borzenkov <arvidjaar@mail.ru> Cc: Matt Domsch <Matt_Domsch@dell.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] kernel/params.c: make param_array() staticAdrian Bunk2006-03-252-13/+6
| | | | | | | | param_array() in kernel/params.c can now become static. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Remove MODULE_PARMRusty Russell2006-03-2556-329/+146
| | | | | | | | | | MODULE_PARM was actually breaking: recent gcc version optimize them out as unused. It's time to replace the last users, which are generally in the most unloved drivers anyway. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] hysdn: remove custom typesAndrew Morton2006-03-2512-126/+127
| | | | | | | | | | | | | | | hysdn defines its own types: ulong, uint, uchar and word. Problem is, the module_param macros rely upon some of those identifiers having special meanings too. The net effect is that module_param() and friends cannot be used in ISDN because of this namespace clash. So remove the hysdn-private defines and open-code them all. Cc: Karsten Keil <kkeil@suse.de> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] drivers/block/nbd.c: don't defer compile error to runtimeAdrian Bunk2006-03-251-4/+1
| | | | | | | | If we can detect a problem at compile time, the compilation should fail. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] constify tty flip buffer handlingThomas Koeller2006-03-252-4/+4
| | | | | | | | | | Add a couple of 'const' qualifiers to the TTY flip buffer APIs, where appropriate. Signed-off-by: Thomas Koeller <thomas@koeller.dyndns.org> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ISDN: fix copy_to_user() unused result warning in isdn_pppJesper Juhl2006-03-251-1/+2
| | | | | | | | | drivers/isdn/i4l/isdn_ppp.c:785: warning: ignoring return value of `copy_to_user', declared with attribute warn_unused_result Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Add lookup_instantiate_filp usage warningOleg Drokin2006-03-251-0/+4
| | | | | | | | | | | | | I think it would be nice to put an usage warning in header of lookup_instantiate_filp() to indicate it is unsafe to use it on anything but regular files (even that is potentially unsafe, but there your ->open() is usually in your hands anyway), so that others won't fall into the same trap I did. Signed-off-by: Oleg Drokin <green@linuxhacker.ru> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Introduce FMODE_EXEC file flagOleg Drokin2006-03-252-2/+7
| | | | | | | | | | | | | | | | | | | | | | | | | Introduce FMODE_EXEC file flag, to indicate that file is being opened for execution. This is useful for distributed filesystems to maintain consistent behavior for returning ETXTBUSY when opening for write and execution happens on different nodes. akpm: Needed by Lustre at present. I assume their objective to to work towards being able to install Lustre on an unmodified distro kernel, which seems sane. It should have zero runtime cost. Trond and Chuck indicate that NFS4 can probably use this too, for the same thing. Steven says it's also on the GFS todo list. Signed-off-by: Oleg Drokin <green@linuxhacker.ru> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Cc: Chuck Lever <cel@citi.umich.edu> Cc: Steven Whitehouse <swhiteho@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] reiserfs: reiserfs_file_write() will lose error code when a 0-length ↵Jeff Mahoney2006-03-251-4/+4
| | | | | | | | | | | | | | | | | | | write occurs w/ O_SYNC When an error occurs in reiserfs_file_write before any data is written, and O_SYNC is set, the return code of generic_osync_write will overwrite the error code, losing it. This patch ensures that generic_osync_inode() doesn't run under an error condition, losing the error. This duplicates the logic from generic_file_buffered_write(). Signed-off-by: Jeff Mahoney <jeffm@suse.com> Cc: Chris Mason <mason@suse.com> Cc: Jeff Mahoney <jeffm@suse.com> Cc: Alexander Zarochentsev <zam@namesys.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] reiserfs: handle trans_id overflowAlexander Zarochentsev2006-03-251-3/+18
| | | | | | | | | | | | | Reiserfs does not handle transaction ID overflow correctly. Transaction ID == 0 causes reiserfs to crash. The patch fixes all places where the transaction ID is incremented. Signed-off-by: Alexander Zarochentsev <zam@namesys.com> Signed-off-by: Hans Reiser <reiser@namesys.com> Cc: Chris Mason <mason@suse.com> Cc: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] reiserfs: fix transaction overflowingAlexander Zarochentzev2006-03-252-138/+77
| | | | | | | | | | | | | | | This patch fixes a bug in reiserfs truncate. A transaction might overflow when truncating long highly fragmented file. The fix is to split truncation into several transactions to avoid overflowing. Signed-off-by: Vladimir V. Saveliev <vs@namesys.com> Cc; Charles McColgan <cm@chuck.net> Cc: Alexander Zarochentsev <zam@namesys.com> Cc: Hans Reiser <reiser@namesys.com> Cc: Chris Mason <mason@suse.com> Cc: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fs/inode.c: make iprune_mutex staticAdrian Bunk2006-03-252-2/+1
| | | | | | | | There's no reason for iprune_mutex being global. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Small cleanup in quota.hJan Kara2006-03-251-1/+0
| | | | | | | | Remove unused quota flag. 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] Missed error checking for intent's filp in open_namei().Oleg Drokin2006-03-251-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It seems there is error check missing in open_namei for errors returned through intent.open.file (from lookup_instantiate_filp). If there is plain open performed, then such a check done inside __path_lookup_intent_open called from path_lookup_open(), but when the open is performed with O_CREAT flag set, then __path_lookup_intent_open is only called with LOOKUP_PARENT set where no file opening can occur yet. Later on lookup_hash is called where exact opening might take place and intent.open.file may be filled. If it is filled with error value of some sort, then we get kernel attempting to dereference this error value as address (and corresponding oops) in nameidata_to_filp() called from filp_open(). While this is relatively simple to workaround in ->lookup() method by just checking lookup_instantiate_filp() return value and returning error as needed, this is not so easy in ->d_revalidate(), where we can only return "yes, dentry is valid" or "no, dentry is invalid, perform full lookup again", and just returning 0 on error would cause extra lookup (with potential extra costly RPCs). So in short, I believe that there should be no difference in error handling for opening a file and creating a file in open_namei() and propose this simple patch as a solution. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] jbd: convert kjournald to kthread APIAndrew Morton2006-03-251-4/+4
| | | | | Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] jbd: embed j_commit_timer in journal structAndrew Morton2006-03-253-13/+14
| | | | | | | | | The kjournald timer is currently on the kernel thread's stack and the journal structure points at it. Save a pointer hop by moving the timer into the journal structure. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Keys: Replace duplicate non-updateable keys rather than failingDavid Howells2006-03-251-5/+9
| | | | | | | | | | | | | | | | | | | | | | | Cause an attempt to add a duplicate non-updateable key (such as a keyring) to a keyring to discard the extant copy in favour of the new one rather than failing with EEXIST: # do the test in an empty session keyctl session # create a new keyring called "a" and attach to session keyctl newring a @s # create another new keyring called "a" and attach to session, # displacing the keyring added by the second command: keyctl newring a @s Without this patch, the third command will fail. For updateable keys (such as those of "user" type), the update method will still be called rather than a new key being created. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Keys: Fix key quota management on key allocationDavid Howells2006-03-251-2/+2
| | | | | | | | | Make key quota detection generate an error if either quota is exceeded rather than only if both quotas are exceeded. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86: HUGETLBFS and DEBUG_PAGEALLOC are incompatibleChen, Kenneth W2006-03-251-1/+1
| | | | | | | | | | | | | DEBUG_PAGEALLOC is not compatible with hugetlb page support. That debug option turns off PSE. Once it is turned off in CR4, the cpu will ignore pse bit in the pmd and causing infinite page-not- present faults. So disable DEBUG_PAGEALLOC if the user selected hugetlbfs. Signed-off-by: Ken Chen <kenneth.w.chen@intel.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86: make CONFIG_HOTPLUG_CPU depend on !X86_PCAshok Raj2006-03-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Make CONFIG_HOTPLUG_CPU depend on !X86_PC, so we need to turn on either CONFIG_GENERICARCH, CONFIG_BIGSMP or any other subarch except X86_PC when CONFIG_HOTPLUG_CPU=y With 2.6.15+ kernels when CONFIG_HOTPLUG_CPU is turned on we switch to bigsmp mode for sending IPI's and ioapic configurations that caused the following error message. >> More than 8 CPUs detected and CONFIG_X86_PC cannot handle it. >> Use CONFIG_X86_GENERICARCH or CONFIG_X86_BIGSMP. Originally bigsmp was added just to handle >8 cpus, but now with hotplug cpu support we need to use bigsmp mode (why? see below), that cause the above error message even if there were less than 8 cpus in the system. The message is bogus, but we are cannot use logical flat mode due to issues with broadcast IPI can confuse a CPU just comming up. We use flat physical mode just like x86_64 case. More details on why bigsmp now uses flat physical mode (vs. cluster mode) in following link. http://marc.theaimsgroup.com/?l=linux-kernel&m=113261865814107&w=2 Signed-off-by: Ashok Raj <ashok.raj@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] quieten zone_pcp_initAnton Blanchard2006-03-251-2/+3
| | | | | | | | | | | | | | | | In zone_pcp_init we print out all zones even if they are empty: On node 0 totalpages: 245760 DMA zone: 245760 pages, LIFO batch:31 DMA32 zone: 0 pages, LIFO batch:0 Normal zone: 0 pages, LIFO batch:0 HighMem zone: 0 pages, LIFO batch:0 To conserve dmesg space why not print only the non zero zones. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] mm: make page migration dependent on swap and NUMAChristoph Lameter2006-03-251-2/+2
| | | | | | | | | | The page migration code could function without NUMA but we currently have no users for the non-NUMA case. Signed-off-by: Christoph Lameter <clameter@sgi.com> Cc: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] slab: fix memory leak in alloc_kmemlistChristoph Lameter2006-03-251-5/+28
| | | | | | | | | | | | | | | | | | | | | | | | | We have had this memory leak for a while now. The situation is complicated by the use of alloc_kmemlist() as a function to resize various caches by do_tune_cpucache(). What we do here is first of all make sure that we deallocate properly in the loop over all the nodes. If we are just resizing caches then we can simply return with -ENOMEM if an allocation fails. If the cache is new then we need to rollback and remove all earlier allocations. We detect that a cache is new by checking if the link to the global cache chain has been setup. This is a bit hackish .... (also fix up too overlong lines that I added in the last patch...) Signed-off-by: Christoph Lameter <clameter@sgi.com> Cc: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] alloc_kmemlist: Some cleanup in preparation for a real memory leak fixChristoph Lameter2006-03-251-17/+17
| | | | | | | | | | | | | | | | | | | | Inspired by Jesper Juhl's patch from today 1. Get rid of err We do not set it to anything else but zero. 2. Drop the CONFIG_NUMA stuff. There are definitions for alloc_alien_cache and free_alien_cache() that do the right thing for the non NUMA case. 3. Better naming of variables. 4. Remove redundant cachep->nodelists[node] expressions. Signed-off-by: Christoph Lameter <clameter@sgi.com> 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] slab: Bypass free lists for __drain_alien_cache()Christoph Lameter2006-03-251-2/+9
| | | | | | | | | | | | | | | | | | __drain_alien_cache() currently drains objects by freeing them to the (remote) freelists of the original node. However, each node also has a shared list containing objects to be used on any processor of that node. We can avoid a number of remote node accesses by copying the pointers to the free objects directly into the remote shared array. And while we are at it: Skip alien draining if the alien cache spinlock is already taken. Kiran reported that this is a performance benefit. Signed-off-by: Christoph Lameter <clameter@sgi.com> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] slab: add transfer_objects() functionChristoph Lameter2006-03-251-14/+28
| | | | | | | | | | | | | slabr_objects() can be used to transfer objects between various object caches of the slab allocator. It is currently only used during __cache_alloc() to retrieve elements from the shared array. We will be using it soon to transfer elements from the alien caches to the remote shared array. Signed-off-by: Christoph Lameter <clameter@sgi.com> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] mm: use kmem_cache_zallocPekka Enberg2006-03-252-6/+3
| | | | | | | | Convert mm/ to use the new kmem_cache_zalloc allocator. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] slab: optimize constant-size kzalloc callsPekka Enberg2006-03-252-6/+30
| | | | | | | | | | As suggested by Eric Dumazet, optimize kzalloc() calls that pass a compile-time constant size. Please note that the patch increases kernel text slightly (~200 bytes for defconfig on x86). Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] slab: introduce kmem_cache_zalloc allocatorPekka Enberg2006-03-253-0/+29
| | | | | | | | | | Introduce a memory-zeroing variant of kmem_cache_alloc. The allocator already exits in XFS and there are potential users for it so this patch makes the allocator available for the general public. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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