- 25 Jun, 2006 40 commits
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Jeremy Fitzhardinge authored
Implement kasprintf, a kernel version of asprintf. This allocates the memory required for the formatted string, including the trailing '\0'. Returns NULL on allocation failure. Signed-off-by:
Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by:
Chris Wright <chrisw@sous-sol.org> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Jeremy Fitzhardinge authored
This change allows callers to use a 0-byte buffer and a NULL buffer pointer with vsnprintf, so it can be used to determine how large the resulting formatted string will be. Previously the code effectively treated a size of 0 as a size of 4G (on 32-bit systems), with other checks preventing it from actually trying to emit the string - but the terminal \0 would still be written, which would crash if the buffer is NULL. This change changes the boundary check so that 'end' points to the putative location of the terminal '\0', which is only written if size > 0. vsnprintf still allows the buffer size to be set very large, to allow unbounded buffer sizes (to implement sprintf, etc). [akpm@osdl.org: fix long-vs-longlong confusion] Signed-off-by:
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Atsushi Nemoto authored
Add an LED trigger acts like a heart beat. This can be used as a replacement of CONFIG_HEARTBEAT code exists in some arch's timer code. Signed-off-by:
Atsushi Nemoto <anemo@mba.ocn.ne.jp> Acked-by:
Richard Purdie <rpurdie@rpsys.net> Cc: "Nish Aravamudan" <nish.aravamudan@gmail.com> Signed-off-by:
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Randy Dunlap authored
Fix kernel-doc formatting in ktime.h and hrtimer.[ch] files. Signed-off-by:
Randy Dunlap <rdunlap@xenotime.net> Signed-off-by:
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Randy Dunlap authored
Fix kernel-doc formatting in Reed-Solomon code. Signed-off-by:
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Randy Dunlap authored
kernel-doc struct fields should be consistently called "Members", not "Arguments", so switch man-mode output to use "Members" like all of the other formats do. Signed-off-by:
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Randy Dunlap authored
For kernel-doc output modes of text and man, do not use XML escapes for less-than, greater-than, and ampersand characters. I.e., leave the text and man output clean and readable. Signed-off-by:
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Paul Fulghum authored
Fix memory leak caused by incorrect use of tty buffer facility. tty buffers are allocated but never processed by call to tty_flip_buffer_push so they accumulate on the full buffer list. Current code uses the buffers as a temporary storage for data before passing it directly to the line discipline. Signed-off-by:
Paul Fulghum <paulkf@microgate.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by:
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Ulrich Drepper authored
When the linkat() syscall was added the flag parameter was added in the last minute but it wasn't used so far. The following patch should change that. My tests show that this is all that's needed. If OLDNAME is a symlink setting the flag causes linkat to follow the symlink and create a hardlink with the target. This is actually the behavior POSIX demands for link() as well but Linux wisely does not do this. With this flag (which will most likely be in the next POSIX revision) the programmer can choose the behavior, defaulting to the safe variant. As a side effect it is now possible to implement a POSIX-compliant link(2) function for those who are interested. touch file ln -s file symlink linkat(fd, "symlink", fd, "newlink", 0) -> newlink is hardlink of symlink linkat(fd, "symlink", fd, "newlink", AT_SYMLINK_FOLLOW) -> newlink is hardlink of file The value of AT_SYMLINK_FOLLOW is determined by the definition we already use in glibc. Signed-off-by:Ulrich Drepper <drepper@redhat.com> Acked-by:
Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
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Yoichi Yuasa authored
TANBAC_TB0229 requires GPIO_VR41XX. This patch adds "select GPIO_VR41XX" for TANBAC_TB0229. Signed-off-by:
Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by:
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Heiko Carstens authored
If a cpu hotplug callback fails on CPU_UP_PREPARE, all callbacks will be called with CPU_UP_CANCELED. A few of these callbacks assume that on CPU_UP_PREPARE a pointer to task has been stored in a percpu array. This assumption is not true if CPU_UP_PREPARE fails and the following calls to kthread_bind() in CPU_UP_CANCELED will cause an addressing exception because of passing a NULL pointer. Signed-off-by:
Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Ashok Raj <ashok.raj@intel.com> Signed-off-by:
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Frode Isaksen authored
If you do a poll() call with timeout -1, the wait will be a big number (depending on HZ) instead of infinite wait, since -1 is passed to the msecs_to_jiffies function. Signed-off-by:
Frode Isaksen <frode.isaksen@gmail.com> Acked-by:
Nishanth Aravamudan <nacc@us.ibm.com> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by:
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Serge E. Hallyn authored
- Update stop_machine.c to spawn stop_machine as kthreads rather than the deprecated kernel_threads. - Update stop_machine to use the more efficient kthread_bind() before running task in place of set_cpus_allowed() after. [akpm@osdl.org: remove now-wrong set_cpus_allowed()] Signed-off-by:
Serge E. Hallyn <serue@us.ibm.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by:
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Al Viro authored
%s is only valid if array is known to contain NUL or precision is given and does not exceed the size of array. Signed-off-by:
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Bjorn Helgaas authored
Make each one fit on a line so it's easier to read. I re-ordered COMPAQ_CISSC/0x4091, which was out of order. I double-checked these, but it would be good if you'd also check them to make sure I didn't miss any. Signed-off-by:
Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Jeff Garzik <jeff@garzik.org> Acked-by:
Mike Miller <mike.miller@hp.com> Signed-off-by:
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Bjorn Helgaas authored
cciss is full of inconsistent style ("for (" vs. "for(", lines that end with whitespace, lines beginning with a mix of spaces & tabs, etc). This patch changes only whitespace. Signed-off-by:Jeff Garzik <jeff@garzik.org> Acked-by:
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Bjorn Helgaas authored
Typical Linux style is "return -EINVAL", not "return(-EINVAL)". Signed-off-by:
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Bjorn Helgaas authored
Fix a few spelling errors. Signed-off-by:
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Bjorn Helgaas authored
It's easier to verify loop bounds if the array name is mentioned the for() statement that steps through the array. Signed-off-by:
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Bjorn Helgaas authored
We already print "cciss: using DAC cycles" or similar for every adapter found: why not just identify the device we're talking about and include other useful information? Jeff Garzik <jeff@garzik.org>: Although this patch is correct, I would consider using dev_printk() rather than referencing pci_name() in printk() arguments. Signed-off-by:
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Bjorn Helgaas authored
We should call pci_request_regions() to claim all resources the device decodes. Previously, we claimed only the I/O port range. Signed-off-by:
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Bjorn Helgaas authored
If something fails after we call pci_enable_device(), we should call pci_disable_device() before returning the failure. Signed-off-by:
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Rob Landley authored
New section on creating an external initramfs image using cpio (with script), a warning about bad advice in the cpio man page, a bit of debugging advice (hello world and rdinit=/bin/sh), and a few minor tweaks to other parts of it. Signed-off-by:
Rob Landley <rob@landley.net> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by:
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Serge E. Hallyn authored
Update smbiod to use kthread instead of deprecated kernel_thread. [akpm@osdl.org: cleanup] Signed-off-by:
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Serge E. Hallyn authored
Update loop.c to use a kthread instead of a deprecated kernel_thread for loop devices. [akpm@osdl.org: don't change the thread's name] Signed-off-by:
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Randy Dunlap authored
Make kernel-doc corrections & additions to lib/crc*.c. Add crc functions to kernel-api.tmpl in DocBook. Signed-off-by:
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Randy Dunlap authored
Add a new chapter for kernel-lib functions to kernel-api.tmpl. Add lib/cmdline.c to the new kernel-lib chapter. Signed-off-by:
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Randy Dunlap authored
Make corrections/fixes to kernel-doc in lib/bitmap.c and include it in DocBook template. Signed-off-by:
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Eric Sesterhenn authored
coverity found two needless checks in vfs_inode.c (cid #1165 and #1164) In both cases inode is always NULL when we goto error; either because it is still initialized to NULL or is set to NULL explicitly. This patch simply removes these checks to save some code. Signed-off-by:
Eric Sesterhenn <snakebyte@gmx.de> Acked-by:
Eric Van Hensbergen <ericvh@gmail.com> Cc: Ron Minnich <rminnich@lanl.gov> Cc: Latchesar Ionkov <lucho@ionkov.net> Signed-off-by:
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Randy Dunlap authored
Fix debug-only printk syntax error. Signed-off-by:
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Randy Dunlap authored
When the verbose (-v) option is used with scripts/kernel-doc, this option reports when the kernel-doc format is malformed and apparently contains function description lines before function parameters. In these cases, the kernel-doc script will print something like: Warning(filemap.c:335): contents before sections I have fixed the problems in mm/filemap.c and added lots of kernel-doc to that file (posted to the linux-mm mailing list Mon. 2006-June-12). The real goal (as requested by Andrew Morton) is to allow the short function description to be more than one line long. This patch is both a kernel-doc checker and a tool en route to that goal. Signed-off-by:
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Miklos Szeredi authored
VFS uses current->files pointer as lock owner ID, and it wouldn't be prudent to expose this value to userspace. So scramble it with XTEA using a per connection random key, known only to the kernel. Only one direction needs to be implemented, since the ID is never sent in the reverse direction. The XTEA algorithm is implemented inline since it's simple enough to do so, and this adds less complexity than if the crypto API were used. Thanks to Jesper Juhl for the idea. Signed-off-by:
Miklos Szeredi <miklos@szeredi.hu> Signed-off-by:
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Miklos Szeredi authored
Add synchronous request interruption. This is needed for file locking operations which have to be interruptible. However filesystem may implement interruptibility of other operations (e.g. like NFS 'intr' mount option). Signed-off-by:
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Miklos Szeredi authored
Rename the 'interrupted' flag to 'aborted', since it indicates exactly that, and next patch will introduce an 'interrupted' flag for a Signed-off-by:
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Miklos Szeredi authored
All POSIX locks owned by the current task are removed on close(). If the FLUSH request resulting initiated by close() fails to reach userspace, there might be locks remaining, which cannot be removed. The only reason it could fail, is if allocating the request fails. In this case use the request reserved for RELEASE, or if that is currently used by another FLUSH, wait for it to become available. Signed-off-by:
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Miklos Szeredi authored
This patch adds POSIX file locking support to the fuse interface. This implementation doesn't keep any locking state in kernel. Unlocking on close() is handled by the FLUSH message, which now contains the lock owner id. Mandatory locking is not supported. The filesystem may enfoce mandatory locking in userspace if needed. Signed-off-by:
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Miklos Szeredi authored
Add a control filesystem to fuse, replacing the attributes currently exported through sysfs. An empty directory '/sys/fs/fuse/connections' is still created in sysfs, and mounting the control filesystem here provides backward compatibility. Advantages of the control filesystem over the previous solution: - allows the object directory and the attributes to be owned by the filesystem owner, hence letting unpriviled users abort the filesystem connection - does not suffer from module unload race [akpm@osdl.org: fix this fs for recent dhowells depredations] [akpm@osdl.org: fix 64-bit printk warnings] Signed-off-by: -
Miklos Szeredi authored
Don't put requests into the background when a fatal interrupt occurs while the request is in userspace. This removes a major wart from the implementation. Backgrounding of requests was introduced to allow breaking of deadlocks. However now the same can be achieved by aborting the filesystem through the 'abort' sysfs attribute. This is a change in the interface, but should not cause problems, since these kinds of deadlocks never happen during normal operation. Signed-off-by:
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Jan Engelhardt authored
The following patches add POSIX file locking to the fuse interface. Additional changes ralated to this are: - asynchronous interrupt of requests by SIGKILL no longer supported - separate control filesystem, instead of using sysfs objects - add support for synchronously interrupting requests Details are documented in Documentation/filesystems/fuse.txt throughout the patches. This patch: Have fuse.h use MISC_MAJOR rather than a hardcoded '10'. Signed-off-by:
Jan Engelhardt <jengelh@gmx.de> Signed-off-by:
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David Howells authored
Make another couple of alterations to the memory barrier document following suggestions by Alan Stern and in co-operation with Paul McKenney: (*) Rework the point of introduction of memory barriers and the description of what they are to reiterate why they're needed. (*) Modify a statement about the use of data dependency barriers to note that other barriers can be used instead (as they imply DD-barriers). Signed-off-by:David Howells <dhowells@redhat.com> Acked-By:
Paul E. McKenney <paulmck@us.ibm.com> Signed-off-by:
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