- 12 Feb, 2007 28 commits
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Eric W. Biederman authored
The problem we were assuming that current->nsproxy->ipc_ns would never change while someone has our file in /proc/sysvipc/ file open. Given that this can change with both unshare and by passing the file descriptor to another process that assumption is occasionally wrong. Therefore this patch causes /proc/sysvipc/* to cache the namespace and increment it's count when we open the file and to decrement the count when we close the file, ensuring consistent operation with no surprises. Signed-off-by:
Eric W. Biederman <ebiederm@xmission.com> Cc: Serge E. Hallyn <serue@us.ibm.com> Cc: Herbert Poetzl <herbert@13thfloor.at> Cc: Kirill Korotaev <dev@sw.ru> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Ahmed S. Darwish authored
Use ARRAY_SIZE macro already defined in kernel.h Signed-off-by:
Ahmed S. Darwish <darwish.07@gmail.com> Signed-off-by:
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Ahmed S. Darwish authored
Use ARRAY_SIZE macro already defined in kernel.h Signed-off-by:
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Ahmed S. Darwish authored
Use ARRAY_SIZE macro already defined in kernel.h Signed-off-by:
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Ahmed S. Darwish authored
A patch to use ARRAY_SIZE macro already defined in kernel.h Signed-off-by:
Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by:
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Alan Cox authored
The problem is various drivers legally validly and sensibly try to claim IRQs but the kernel insists on vomiting forth a giant irrelevant debugging spew when the types clash. Edit kernel/irq/manage.c go down to mismatch: in setup_irq() and ifdef out the if clause that checks for mismatches. It'll then just do the right thing and work sanely. For the current -mm kernel this will do the trick (and moves it into shared irq debugging as in debug mode the info spew is useful). I've had a variant of this in my private tree for some time as I got fed up on the mess on boxes where old legacy IRQs get reused. Signed-off-by:
Alan Cox <alan@redhat.com> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by:
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David Woodhouse authored
Drivers registering IRQ handlers with SA_SHIRQ really ought to be able to handle an interrupt happening before request_irq() returns. They also ought to be able to handle an interrupt happening during the start of their call to free_irq(). Let's test that hypothesis.... [bunk@stusta.de: Kconfig fixes] Signed-off-by:
David Woodhouse <dwmw2@infradead.org> Cc: Arjan van de Ven <arjan@infradead.org> Signed-off-by:
Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by:
Ingo Molnar <mingo@elte.hu> Signed-off-by:
Adrian Bunk <bunk@stusta.de> Signed-off-by:
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Nick Piggin authored
Fix for inotify read bug (bugzilla.kernel.org #6999) Problem Description: When reading from an inotify device with an insufficient sized buffer, read(2) will return 0 with no errno set. This is because of an logically incorrect action from the user program thus should return an more logical value. My suggestion is return -EINVAL as for bind(2). This patch is based on the proposal from Ryan <wolf0403@hotmail.com>, and feedback from John McCutchan <john@johnmccutchan.com>. Return -EINVAL if we have not passed in enough buffer space to read a single inotify event, rather than 0 which indicates that there is nothing to read. Signed-off-by:
Nick Piggin <npiggin@suse.de> Acked-by:
"John McCutchan" <john@johnmccutchan.com> Cc: Ryan <wolf0403@hotmail.com> Signed-off-by:
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Christoph Hellwig authored
Iterate over sb->s_inodes instead of sb->s_files in add_dquot_ref. This reduces list search and lock hold time aswell as getting rid of one of the few uses of file_list_lock which Ingo identified as a scalability problem. Previously we called dq_op->initialize for every inode handing of a writeable file that wasn't initialized before. Now we're calling it for every inode that has a non-zero i_writecount, aka a writeable file descriptor refering to it. Thanks a lot to Jan Kara for running this patch through his quota test harness. Signed-off-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
Jan Kara <jack@suse.cz> Signed-off-by:
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Christoph Hellwig authored
Remove_dquot_ref can move to dqout.c instead of beeing in inode.c under #ifdef CONFIG_QUOTA. Also clean the resulting code up a tiny little bit by testing sb->dq_op earlier - it's constant over a filesystems lifetime. Signed-off-by:
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Martin Peschke authored
The return value of scnprintf() never exceeds @size. Signed-off-by:
Martin Peschke <mp3@de.ibm.com> Signed-off-by:
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Dan Aloni authored
This patch fixes the documentation of nfsroot to match NFS_DEF_FILE_IO_SIZE. Or perhaps we need to change NFS_DEF_FILE_IO_SIZE to match the documentation? Signed-off-by:
Dan Aloni <da-x@monatomic.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Signed-off-by:
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Jiri Slaby authored
Cyclades no longer serves the 2 e-mails listed in MAINTAINERS. Remove them and mark those entries as Orphaned. Signed-off-by:
Jiri Slaby <jirislaby@gmail.com> Signed-off-by:
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Robert P. J. Day authored
Since quota.h declares a R/W semaphore, it should include rwsem.h explicitly. Signed-off-by:
Robert P. J. Day <rpjday@mindspring.com> Acked-by:
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Richard Knutsson authored
Remove labs() since it is not used/needed. Signed-off-by:
Richard Knutsson <ricknu-0@student.ltu.se> Signed-off-by:
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Jiri Slaby authored
Use pci_device_id struct instead of ushort array. Add MODULE_DEVICE_TABLE. Signed-off-by:
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Jiri Slaby authored
Use more PCI_DEVICE macro Signed-off-by:
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Andreas Gruenbacher authored
Here is a bugfix to d_path. First, when d_path() hits a lazily unmounted mount point, it tries to prepend the name of the lazily unmounted dentry to the path name. It gets this wrong, and also overwrites the slash that separates the name from the following pathname component. This is demonstrated by the attached test case, which prints "getcwd returned d_path-bugsubdir" with the bug. The correct result would be "getcwd returned d_path-bug/subdir". It could be argued that the name of the root dentry should not be part of the result of d_path in the first place. On the other hand, what the unconnected namespace was once reachable as may provide some useful hints to users, and so that seems okay. Second, it isn't always possible to tell from the __d_path result whether the specified root and rootmnt (i.e., the chroot) was reached: lazy unmounts of bind mounts will produce a path that does start with a non-slash so we can tell from that, but other lazy unmounts will produce a path that starts with a slash, just like "ordinary" paths. The attached patch cleans up __d_path() to fix the bug with overlapping pathname components. It also adds a @fail_deleted argument, which allows to get rid of some of the mess in sys_getcwd(). Grabbing the dcache_lock can then also be moved into __d_path(). The patch also makes sure that paths will only start with a slash for paths which are connected to the root and rootmnt. The @fail_deleted argument could be added to d_path() as well: this would allow callers to recognize deleted files, without having to resort to the ambiguous check for the " (deleted)" string at the end of the pathnames. This is not currently done, but it might be worthwhile. Signed-off-by:
Andreas Gruenbacher <agruen@suse.de> Cc: Neil Brown <neilb@suse.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by:
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Robert P. J. Day authored
Replace the incorrect debugging check of "#ifdef NTFS_DEBUG" with just "#ifdef DEBUG". Signed-off-by:
Anton Altaparmakov <aia21@cantab.net> Signed-off-by:
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Andrew Morton authored
As pointed out in http://bugzilla.kernel.org/show_bug.cgi?id=7922, dynamic blockdev major allocation can hand out majors which LANANA has defined as being for local/experimental use. Cc: Torben Mathiasen <device@lanana.org> Cc: Greg KH <greg@kroah.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Tomas Klas <tomas.klas@mepatek.cz> Signed-off-by:
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Andrew Morton authored
As pointed out in http://bugzilla.kernel.org/show_bug.cgi?id=7922, dynamic chardev major allocation can hand out majors which LANANA has defined as being for local/experimental use. Cc: Torben Mathiasen <device@lanana.org> Cc: Greg KH <greg@kroah.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Tomas Klas <tomas.klas@mepatek.cz> Signed-off-by:
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David Chinner authored
Don't hide buffer_unwritten behind buffer_delay() and remove the hack that clears unexpected buffer_unwritten() states now that it can't happen. Signed-off-by:
Dave Chinner <dgc@sgi.com> Acked-by:
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David Chinner authored
Currently, XFS uses BH_PrivateStart for flagging unwritten extent state in a bufferhead. Recently, I found the long standing mmap/unwritten extent conversion bug, and it was to do with partial page invalidation not clearing the unwritten flag from bufferheads attached to the page but beyond EOF. See here for a full explaination: http://oss.sgi.com/archives/xfs/2006-12/msg00196.html The solution I have checked into the XFS dev tree involves duplicating code from block_invalidatepage to clear the unwritten flag from the bufferhead(s), and then calling block_invalidatepage() to do the rest. Christoph suggested that this would be better solved by pushing the unwritten flag into the common buffer head flags and just adding the call to discard_buffer(): http://oss.sgi.com/archives/xfs/2006-12/msg00239.html The following patch makes BH_Unwritten a first class citizen. Signed-off-by:
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Nick Piggin authored
Make mincore work for anon mappings, nonlinear, and migration entries. Based on patch from Linus Torvalds <torvalds@linux-foundation.org>. Signed-off-by:
Hugh Dickins <hugh@veritas.com> Signed-off-by:
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Benjamin Herrenschmidt authored
Add a NOPFN_REFAULT return code for vm_ops->nopfn() equivalent to NOPAGE_REFAULT for vmops->nopage() indicating that the handler requests a re-execution of the faulting instruction Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Arnd Bergmann <arnd.bergmann@de.ibm.com> Cc: Hugh Dickins <hugh@veritas.com> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by:
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Nick Piggin authored
Add a vm_insert_pfn helper, so that ->fault handlers can have nopfn functionality by installing their own pte and returning NULL. Signed-off-by:
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Michael Hanselmann authored
Commit 40b20c25 by Len Brown introduced a null pointer dereference in the appledisplay driver. This patch fixes it. Signed-off-by:
Michael Hanselmann <linux-kernel@hansmi.ch> Cc: Len Brown <lenb@kernel.org> Cc: Greg KH <greg@kroah.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by:
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Heiko Carstens authored
Commit 9ac7849e causes this on S390: drivers/built-in.o: In function `dmam_noncoherent_release': dma-mapping.c:(.text+0x1515c): undefined reference to `dma_free_noncoherent' drivers/built-in.o: In function `dmam_free_noncoherent': undefined reference to `dma_free_noncoherent' drivers/built-in.o: In function `dmam_alloc_noncoherent': undefined reference to `dma_alloc_noncoherent' make: *** [.tmp_vmlinux1] Error 1 Cc: Tejun Heo <htejun@gmail.com> Acked-by:
Jeff Garzik <jeff@garzik.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by:
Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by:
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- 11 Feb, 2007 12 commits
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Jens Axboe authored
This improves performance considerably for sync requests when you have command queuing enabled. Signed-off-by:Jens Axboe <jens.axboe@oracle.com>
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Jens Axboe authored
We only really need it for a process going away, so move it to those locations. Signed-off-by: -
Jens Axboe authored
Makes it more fair for the residual slice count. Signed-off-by: -
Jens Axboe authored
We currently check the FIFO once per slice. Optimize that a bit and only do it as the first thing for a new slice, so we don't end up doing a single request and then seek to the FIFO requests. Signed-off-by: -
Jens Axboe authored
It must always be the active queue, otherwise it's a bug. So just use the active_queue, don't pass it in explicitly. Signed-off-by: -
Jens Axboe authored
If a slice uses less than it is entitled to (or perhaps more), include that in the decision on how much time to give it the next time it gets serviced. Signed-off-by: -
Jens Axboe authored
This better matches what time the queue is actually spending doing IO. Signed-off-by: -
Jens Axboe authored
Right now we use slice_start, which gives async queues an unfair advantage. Chance that to service_last, and base the resorter on that. Signed-off-by: -
Jens Axboe authored
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Jens Axboe authored
Move the on_rr check into cfq_resort_rr_list(), every call site needs to check it anyway. Signed-off-by: -
Jens Axboe authored
It hasn't been used for a while, kill it off and remove the old if 0 code chunk. Signed-off-by: -
Jens Axboe authored
Don't allow elv_dispatch_sort() to mix reads and writes together, it's rarely a good idea. Signed-off-by:
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