- 25 Mar, 2006 32 commits
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Thomas Koeller authored
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>
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Jesper Juhl authored
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:
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Oleg Drokin authored
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:
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Oleg Drokin authored
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:
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Jeff Mahoney authored
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:
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Alexander Zarochentsev authored
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:
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Alexander Zarochentzev authored
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:
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Adrian Bunk authored
There's no reason for iprune_mutex being global. Signed-off-by:
Adrian Bunk <bunk@stusta.de> Signed-off-by:
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Jan Kara authored
Remove unused quota flag. Signed-off-by:
Jan Kara <jack@suse.cz> Signed-off-by:
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Oleg Drokin authored
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:
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Andrew Morton authored
Signed-off-by:
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Andrew Morton authored
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:
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David Howells authored
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:
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David Howells authored
Make key quota detection generate an error if either quota is exceeded rather than only if both quotas are exceeded. Signed-off-by:
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Chen, Kenneth W authored
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:
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Ashok Raj authored
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=2Signed-off-by:
Ashok Raj <ashok.raj@intel.com> Signed-off-by:
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Anton Blanchard authored
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:
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Christoph Lameter authored
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:
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Christoph Lameter authored
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:
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Christoph Lameter authored
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:
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Christoph Lameter authored
__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:
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Christoph Lameter authored
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:
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Pekka Enberg authored
Convert mm/ to use the new kmem_cache_zalloc allocator. Signed-off-by:
Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by:
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Pekka Enberg authored
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:
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Pekka Enberg authored
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:
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Al Viro authored
Implement /proc/slab_allocators. It produces output like: idr_layer_cache: 80 idr_pre_get+0x33/0x4e buffer_head: 2555 alloc_buffer_head+0x20/0x75 mm_struct: 9 mm_alloc+0x1e/0x42 mm_struct: 20 dup_mm+0x36/0x370 vm_area_struct: 384 dup_mm+0x18f/0x370 vm_area_struct: 151 do_mmap_pgoff+0x2e0/0x7c3 vm_area_struct: 1 split_vma+0x5a/0x10e vm_area_struct: 11 do_brk+0x206/0x2e2 vm_area_struct: 2 copy_vma+0xda/0x142 vm_area_struct: 9 setup_arg_pages+0x99/0x214 fs_cache: 8 copy_fs_struct+0x21/0x133 fs_cache: 29 copy_process+0xf38/0x10e3 files_cache: 30 alloc_files+0x1b/0xcf signal_cache: 81 copy_process+0xbaa/0x10e3 sighand_cache: 77 copy_process+0xe65/0x10e3 sighand_cache: 1 de_thread+0x4d/0x5f8 anon_vma: 241 anon_vma_prepare+0xd9/0xf3 size-2048: 1 add_sect_attrs+0x5f/0x145 size-2048: 2 journal_init_revoke+0x99/0x302 size-2048: 2 journal_init_revoke+0x137/0x302 size-2048: 2 journal_init_inode+0xf9/0x1c4 Cc: Manfred Spraul <manfred@colorfullife.com> Cc: Alexander Nyberg <alexn@telia.com> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Christoph Lameter <clameter@engr.sgi.com> Cc: Ravikiran Thirumalai <kiran@scalex86.org> Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> DESC slab-leaks3-locking-fix EDESC From: Andrew Morton <akpm@osdl.org> Update for slab-remove-cachep-spinlock.patch Cc: Al Viro <viro@ftp.linux.org.uk> Cc: Manfred Spraul <manfred@colorfullife.com> Cc: Alexander Nyberg <alexn@telia.com> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Christoph Lameter <clameter@engr.sgi.com> Cc: Ravikiran Thirumalai <kiran@scalex86.org> Signed-off-by:
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Alessandro Zummo authored
Add a driver for the on-chip watchdog on the cirrus ep93xx series of ARM CPUs. Signed-off-by:
Lennert Buytenhek <buytenh@wantstofly.org> Cc: Wim Van Sebroeck <wim@iguana.be> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by:
Alessandro Zummo <a.zummo@towertech.it> Signed-off-by:
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David Howells authored
The attached patch optimises d_find_alias() to only take the spinlock if there's anything in the the inode's alias list. If there isn't, it returns NULL immediately. With respect to the superblock sharing patch, this should reduce by one the number of times the dcache_lock is taken by nfs_lookup() for ordinary directory lookups. Only in the case where there's already a dentry for particular directory inode (such as might happen when another mountpoint is rooted at that dentry) will the lock then be taken the extra time. Signed-off-by:
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Thomas Gleixner authored
According to the specification the timevals must be validated and an errorcode -EINVAL returned in case the timevals are not in canonical form. This check was never done in Linux. The pre 2.6.16 code converted invalid timevals silently. Negative timeouts were converted by the timeval_to_jiffies conversion to the maximum timeout. hrtimers and the ktime_t operations expect timevals in canonical form. Otherwise random results might happen on 32 bits machines due to the optimized ktime_add/sub operations. Negative timeouts are treated as already expired. This might break applications which work on pre 2.6.16. To prevent random behaviour and API breakage the timevals are checked and invalid timevals sanitized in a simliar way as the pre 2.6.16 code did. Invalid timevals are reported with a per boot limited number of kernel messages so applications which use this misfeature can be corrected. After a grace period of one year the sanitizing should be replaced by a correct validation check. This is also documented in Documentation/feature-removal-schedule.txt The validation and sanitizing is done inside do_setitimer so all callers (sys_setitimer, compat_sys_setitimer, osf_setitimer) are catched. Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
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Thomas Gleixner authored
alarm() calls the kernel with an unsigend int timeout in seconds. The value is stored in the tv_sec field of a struct timeval to setup the itimer. The tv_sec field of struct timeval is of type long, which causes the tv_sec value to be negative on 32 bit machines if seconds > INT_MAX. Before the hrtimer merge (pre 2.6.16) such a negative value was converted to the maximum jiffies timeout by the timeval_to_jiffies conversion. It's not clear whether this was intended or just happened to be done by the timeval_to_jiffies code. hrtimers expect a timeval in canonical form and treat a negative timeout as already expired. This breaks the legitimate usage of alarm() with a timeout value > INT_MAX seconds. For 32 bit machines it is therefor necessary to limit the internal seconds value to avoid API breakage. Instead of doing this in all implementations of sys_alarm the duplicated sys_alarm code is moved into a common function in itimer.c Signed-off-by:
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Andrew Morton authored
I seem to have lost this hunk in yesterday's patch. It brings the coming-online CPU's softlockup timer up to date so we don't get false-positive tripups during CPU hot-add. Signed-off-by:
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Andrey Panin authored
Attached patch fixes invalid pointer arithmetic in DMI code to make onboard device discovery working again. akpm: bug has been present since dmi_find_device() was added in 2.6.14. Affects ipmi only (I think) - the symptoms weren't described. akpm: changed to use pointer arithmetic rather than open-coded sizeof. Signed-off-by:
Andrey Panin <pazke@donpac.ru> Cc: Corey Minyard <minyard@acm.org> Cc: <stable@kernel.org> Signed-off-by:
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- 24 Mar, 2006 8 commits
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Horms authored
net: ne2k.c won't compile if pci_clone_list is const f71e1309 which (amongst other things) made pci_clone_list in ne2k-pci.c const causes the following compile error. This patch reverses that portion of that changeset drivers/net/ne2k-pci.c:123: error: pci_clone_list causes a section type conflict ~/ gcc --version gcc (GCC) 4.0.3 (Debian 4.0.3-1) ~/ dpkg gcc-4.0 | grep Version Version: 4.0.3-1 Signed-Off-By: Horms <horms@verge.net.au ne2k-pci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) cee0890cc97247b6a9decd94f5dc0719ac8f0b1b Signed-off-by:
Jeff Garzik <jeff@garzik.org>
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Andrew Victor authored
This patch adds support for the Ethernet controller integrated in the Atmel AT91RM9200 SoC processor. Changes since the previous submission (01/02/2006) are: - Make use of the clk.h clock infrastructure. - The multicast hash function is not crc32. [Patch by Pedro Perez] Signed-off-by:
Andrew Victor <andrew@sanpeople.com> Signed-off-by:
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Linus Torvalds authored
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev: [PATCH] libata: Remove dependence on host_set->dev for SAS [PATCH] libata: ata_scsi_ioctl cleanup [PATCH] libata: ata_scsi_queuecmd cleanup [libata] export ata_dev_pair; trim trailing whitespace [PATCH] libata: add ata_dev_pair helper [PATCH] Make libata not powerdown drivers on PM_EVENT_FREEZE. [PATCH] libata: make ata_set_mode() responsible for failure handling [PATCH] libata: use ata_dev_disable() in ata_bus_probe() [PATCH] libata: implement ata_dev_disable() [PATCH] libata: check if port is disabled after internal command [PATCH] libata: make per-dev transfer mode limits per-dev [PATCH] libata: add per-dev pio/mwdma/udma_mask [PATCH] libata: implement ata_unpack_xfermask() [libata] Move some bmdma-specific code to libata-bmdma.c [libata sata_uli] kill scr_addr abuse [libata sata_nv] eliminate duplicate codepaths with iomap [libata sata_nv] cleanups: convert #defines to enums; remove in-file history [libata sata_sil24] cleanups: use pci_iomap(), kzalloc()
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Andrew Morton authored
uevent_seqnum and uevent_helper are only defined if CONFIG_HOTPLUG=y, CONFIG_NET=n. (I stole this back from Greg's tree - it makes allnoconfig work). Cc: Greg KH <greg@kroah.com> Signed-off-by:
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Davi Arnaut authored
Copies user-space string with strndup_user() and moves the type string duplication code to a function (thus fixing a wrong check on the length of the type.) Signed-off-by:
Davi Arnaut <davi.arnaut@gmail.com> Cc: David Howells <dhowells@redhat.com> Signed-off-by:
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Davi Arnaut authored
Change hand-coded userspace string copying to strndup_user. Signed-off-by:
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Davi Arnaut authored
This patch series creates a strndup_user() function to easy copying C strings from userspace. Also we avoid common pitfalls like userspace modifying the final \0 after the strlen_user(). Signed-off-by:
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Ingo Molnar authored
Make the softlockup detector purely timer-interrupt driven, removing softirq-context (timer) dependencies. This means that if the softlockup watchdog triggers, it has truly observed a longer than 10 seconds scheduling delay of a SCHED_FIFO prio 99 task. (the patch also turns off the softlockup detector during the initial bootup phase and does small style fixes) Signed-off-by:
Ingo Molnar <mingo@elte.hu> Signed-off-by:
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