- 13 Dec, 2006 40 commits
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J.Bruce Fields authored
Pass the saved and current filehandles together into all the nfsd4 compound operations. I want a unified interface to these operations so we can just call them by pointer and throw out the huge switch statement. Also I'll eventually want a structure like this--that holds the state used during compound processing--for deferral. Signed-off-by:
J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by:
Neil Brown <neilb@suse.de> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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J.Bruce Fields authored
There's no point deferring something just to immediately fail the deferral, especially now that we can do something more useful in the failure case by returning an error. Signed-off-by:
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J.Bruce Fields authored
To avoid tying up server threads when nfsd makes an upcall (to mountd, to get export options, to idmapd, for nfsv4 name<->id mapping, etc.), we temporarily "drop" the request and save enough information so that we can revisit it later. Certain failures during the deferral process can cause us to really drop the request and never revisit it. This is often less than ideal, and is unacceptable in the NFSv4 case--rfc 3530 forbids the server from dropping a request without also closing the connection. As a first step, we modify the deferral code to return -ETIMEDOUT (which is translated to nfserr_jukebox in the v3 and v4 cases, and remains a drop in the v2 case). Signed-off-by:
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J.Bruce Fields authored
This patch on its own causes no change in behavior, since nfsd_cross_mnt() only returns -EAGAIN; but in the future I'd like it to also be able to return -ETIMEDOUT, so we may as well handle any possible error here. Signed-off-by:
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J.Bruce Fields authored
Note there's no need for special handling of -EAGAIN here; nfserrno() does what we want already. So this is a pure cleanup with no change in functionality. Signed-off-by:
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J.Bruce Fields authored
Since exp_parent can fail by returning an error (-EAGAIN) in addition to by returning NULL, we should check for that case in exp_rootfh. (TODO: we should check that userland handles these errors too.) Signed-off-by:
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J.Bruce Fields authored
A comment here incorrectly states that "slack_space" is measured in words, not bytes. Remove the comment, and adjust a variable name and a few comments to clarify the situation. This is pure cleanup; there should be no change in functionality. Signed-off-by:
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J.Bruce Fields authored
The memory leak here is embarassingly obvious. This fixes a problem that causes the kernel to leak a small amount of memory every time it receives a integrity-protected request. Thanks to Aim Le Rouzic for the bug report. Signed-off-by:
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J.Bruce Fields authored
This dprintk is printing the wrong error now, but it's probably an unnecessary dprintk anyway; just remove it. Signed-off-by:
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Adrian Bunk authored
The BLK_DEV_SWIM_IOP driver has: - already been marked as BROKEN in 2.6.0 three years ago and - is still marked as BROKEN. Drivers that had been marked as BROKEN for such a long time seem to be unlikely to be revived in the forseeable future. But if anyone wants to ever revive this driver, the code is still present in the older kernel releases. Signed-off-by:
Adrian Bunk <bunk@stusta.de> Cc: Jens Axboe <jens.axboe@oracle.com> Acked-by:
Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by:
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Adrian Bunk authored
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Tigran Aivazian authored
As Adrian pointed out recently, there were still a couple of places where I should have fixed my email address. Signed-off-by:
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Eric W. Biederman authored
This took a little refactoring but now errors are handled cleanly. When this code used pid_t values this wasn't necessary because you can't leak a pid_t. Thanks to Peter Vandrovec for spotting this. Signed-off-by:
Eric W. Biederman <ebiederm@xmission.com> Cc: Peter Vandrovec <vandrove@vc.cvut.cz> Signed-off-by:
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Eric W. Biederman authored
This patch converts the tracking of the user space watchdog process from using a pid_t to use struct pid. This makes us safe from pid wrap around issues and prepares the way for the pid namespace. Signed-off-by:
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Eric W. Biederman authored
smbfs keeps track of the user space server process in conn_pid. This converts that track to use a struct pid instead of pid_t. This keeps us safe from pid wrap around issues and prepares the way for the pid namespace. Signed-off-by:
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Eric W. Biederman authored
Currently this driver tracks user space clients it should send signals to. In the presenct of file descriptor passing this is appears susceptible to confusion from pid wrap around issues. Replacing this with a struct pid prevents us from getting confused, and prepares for a pid namespace implementation. Signed-off-by:
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Dan Carpenter authored
tty_ldisc_deref() should only be called when tty_ldisc_ref() succeeds otherwise it triggers a BUG(). There's already a function tty_ldisc_flush() that flushes properly. Signed-off-by:
Dan Carpenter <error27@gmail.com> Acked-by:
Alan Cox <alan@redhat.com> Signed-off-by:
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David Brownell authored
Fix a glitch in the procfs dumping of whether the alarm IRQ is enabled: use the traditional name (from drivers/char/rtc.c and many other places) of "alarm_IRQ", not "alrm_wakeup" (which didn't even match the efirtc code, which originated that reporting API). Also, update a few of the RTC drivers to stop providing that duplicate status, and/or to expose it properly when reporting the alarm state. We really don't want every RTC driver doing their own thing here... Signed-off-by:
David Brownell <dbrownell@users.sourceforge.net> Acked-by:
Alessandro Zummo <a.zummo@towertech.it> Signed-off-by:
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David Brownell authored
This removes some syslog spam as RTC drivers register; debug messages shouldn't come out at "info" level. Signed-off-by:
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Jan Beulich authored
- conditionalizes procfs code upon CONFIG_PROC_FS (to reduce code size when that option is not enabled) - make initialization no longer fail when the procfs entry can't be allocated (namely would initialization always have failed when CONFIG_PROC_FS was not set) - move the formerly file-scope static variable rtc_int_handler_ptr into the only function using it, and makes it automatic. Signed-off-by:
Jan Beulich <jbeulich@novell.com> Signed-off-by:
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Jan Beulich authored
Ensure RTC driver doesn't use its timer when it doesn't get to set it up (as it cannot currently prevent other of its functions to be called from outside when not built as a module - probably this should also be addressed). Signed-off-by:
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Al Viro authored
Annotated, all places switched to keeping status net-endian. Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Acked-by:
Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by:
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Al Viro authored
Signed-off-by:
Marcel Holtmann <marcel@holtmann.org> Signed-off-by:
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Al Viro authored
Now that it's built on m68k too... Signed-off-by:
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Al Viro authored
Remove useless includes of linux/io.h, don't even try to build iomap_copy on uml (it doesn't have readb() et.al., so...) Signed-off-by:
Jeff Dike <jdike@addtoit.com> Signed-off-by:
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Al Viro authored
Signed-off-by:
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Al Viro authored
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Ralf Baechle authored
I don't see why there is a memory barrier in copy_from_read_buf() at all. Even if it was useful spin_unlock_irqrestore implies a barrier. Signed-off-by:
Ralf Baechle <ralf@linux-mips.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by:
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Robert P. J. Day authored
All kcalloc() calls of the form "kcalloc(1,...)" are converted to the equivalent kzalloc() calls, and a few kcalloc() calls with the incorrect ordering of the first two arguments are fixed. Signed-off-by:
Robert P. J. Day <rpjday@mindspring.com> Cc: Jeff Garzik <jeff@garzik.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: Adam Belay <ambx1@neo.rr.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: Greg KH <greg@kroah.com> Cc: Mark Fasheh <mark.fasheh@oracle.com> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Cc: Neil Brown <neilb@suse.de> Signed-off-by:
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Jeremy Fitzhardinge authored
activate_mm() is not the right thing to be using in use_mm(). It should be switch_mm(). On normal x86, they're synonymous, but for the Xen patches I'm adding a hook which assumes that activate_mm is only used the first time a new mm is used after creation (I have another hook for dealing with dup_mm). I think this use of activate_mm() is the only place where it could be used a second time on an mm. >From a quick look at the other architectures I think this is OK (most simply implement one in terms of the other), but some are doing some subtly different stuff between the two. Acked-by:
David Miller <davem@davemloft.net> Signed-off-by:
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Ingo Molnar authored
Jarek Poplawski noticed that lockdep global state could be accessed in a racy way if one CPU did a lockdep assert (shutting lockdep down), while the other CPU would try to do something that changes its global state. This patch fixes those races and cleans up lockdep's internal locking by adding a graph_lock()/graph_unlock()/debug_locks_off_graph_unlock helpers. (Also note that as we all know the Linux kernel is, by definition, bug-free and perfect, so this code never triggers, so these fixes are highly theoretical. I wrote this patch for aesthetic reasons alone.) [akpm@osdl.org: build fix] [jarkao2@o2.pl: build fix's refix] Signed-off-by:
Ingo Molnar <mingo@elte.hu> Signed-off-by:
Jarek Poplawski <jarkao2@o2.pl> Signed-off-by:
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Ingo Molnar authored
When we print an assert due to scheduling-in-atomic bugs, and if lockdep is enabled, then the IRQ tracing information of lockdep can be printed to pinpoint the code location that disabled interrupts. This saved me quite a bit of debugging time in cases where the backtrace did not identify the irq-disabling site well enough. Signed-off-by:
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Ingo Molnar authored
CONFIG_DEBUG_LOCKDEP is unacceptably slow because it does not utilize the chain-hash. Turn the chain-hash back on in this case too. Signed-off-by:
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Ingo Molnar authored
Cleanup: the VERY_VERBOSE define was unnecessarily dependent on #ifdef VERBOSE - while the VERBOSE switch is 0 or 1 (always defined). Signed-off-by:
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Ingo Molnar authored
Clear all the chains during lockdep_reset(). This fixes some locking-selftest false positives i saw on -rt. (never saw those on mainline though, but it could happen.) Signed-off-by:
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Ingo Molnar authored
Make verbose lockdep messages (off by default) more informative by printing out the hash chain key. (this patch was what helped me catch the earlier lockdep hash-collision bug) Signed-off-by:
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Ingo Molnar authored
Fix typo in the class_filter() function. (filtering is not used by default so this only affects lockdep-internal debugging cases) Signed-off-by:
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Ingo Molnar authored
Most distributions enable sysrq support but set it to 0 by default. Add a sysrq_always_enabled boot option to always-enable sysrq keys. Useful for debugging - without having to modify the disribution's config files (which might not be possible if the kernel is on a live CD, etc.). Also, while at it, clean up the sysrq interfaces. [bunk@stusta.de: make sysrq_always_enabled_setup() static] Signed-off-by:
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Chen, Kenneth W authored
Implement block device specific .direct_IO method instead of going through generic direct_io_worker for block device. direct_io_worker() is fairly complex because it needs to handle O_DIRECT on file system, where it needs to perform block allocation, hole detection, extents file on write, and tons of other corner cases. The end result is that it takes tons of CPU time to submit an I/O. For block device, the block allocation is much simpler and a tight triple loop can be written to iterate each iovec and each page within the iovec in order to construct/prepare bio structure and then subsequently submit it to the block layer. This significantly speeds up O_D on block device. [akpm@osdl.org: small speedup] Signed-off-by:
Ken Chen <kenneth.w.chen@intel.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Zach Brown <zach.brown@oracle.com> Signed-off-by:
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Mark Fasheh authored
Update ocfs2_should_update_atime() to understand the MNT_RELATIME flag and to test against mtime / ctime accordingly. [akpm@osdl.org: cleanups] Signed-off-by:
Mark Fasheh <mark.fasheh@oracle.com> Cc: Valerie Henson <val_henson@linux.intel.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by:
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