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configfs always made item and attribute ownership root.root and
permissions based on a umask of 022. Add ->setattr() to allow
chown(2)/chmod(2), and persist the changes for the lifetime of the
items and attributes.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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Since there's no longer any external user, we can make __ide_end_request()
static.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Acked-by: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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This patch stops CompactFlash devices being marked as removable. They are
not removable (as defined by Linux) as the media and device are
inseparable. When a card is removed, the whole device is removed from the
system and never sits in a media-less state.
This stops some nasty udev device creation/destruction loops.
Further, once this change is made, there is no need for ide to can be
removed from ide_drive_t.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Acked-by: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Change locking in the new tty buffering facility from using tty->read_lock,
which is currently ignored by drivers and thus ineffective. New locking
uses a new tty buffering specific lock enforced centrally in the tty
buffering code.
Two drivers (esp and cyclades) are updated to use the tty buffering
functions instead of accessing tty buffering internals directly. This is
required for the new locking to work.
Minor checks for NULL buffers added to
tty_prepare_flip_string/tty_prepare_flip_string_flags
Signed-off-by: Paul Fulghum <paulkf@microgate.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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The compilation of kexec/kdump seems to be broken for x86_64. Remove the
dependency of kexec on CONFIG_IA32_EMULATION.
Signed-off-by: Fernando Vazquez <fernando@intellilink.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Fix to broken comment to synchronize_rcu() noted by Keith Owens. Also add
sentence noting that synchronize_sched() and synchronize_rcu() are not
necessarily identical.
Signed-off-by: Paul E. McKenney <paulmck@us.ibm.com>
Cc: Keith Owens <kaos@sgi.com>
Cc: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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The already removed sync_dquots_dev(dev,type) is still defined in the
no-quota case.
Signed-off-by: Herbert Pötzl <herbert@13thfloor.at>
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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- This controller violates the I2O spec for the I/O registers. The patch
contains a workaround which moves the registers to the proper location.
(originally author: Matthew Starzewski)
- If a message frame is beyond the mapped address range a error is
returned.
Signed-off-by: Markus Lidel <Markus.Lidel@shadowconnect.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Add support for the built-in parallel port on SGI O2 (a.k.a. IP32).
Define a new configuration option: PARPORT_IP32. The module is named
parport_ip32.
Hardware support for SPP, EPP and ECP modes along with DMA support when
available are currently implemented.
Signed-off-by: Arnaud Giersch <arnaud.giersch@free.fr>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Fix this warning:
fs/ufs/super.c: In function âufs_fill_superâ:
fs/ufs/super.c:858: warning: case label value exceeds maximum value for type
which happens because __s8 != char. These macros are used for struct
ufs_super_block.fs_clean which is declared as __s8.
Signed-off-by: Andreas Schwab <schwab@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Shrinks "struct dentry" from 128 bytes to 124 on x86, allowing 31 objects
per slab instead of 30.
Cc: John Levon <levon@movementarian.org>
Cc: Philippe Elie <phil.el@wanadoo.fr>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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This fixes the code like this:
bh = sb_find_get_block (sb, tmp + j);
if ((bh && DATA_BUFFER_USED(bh)) || tmp != fs32_to_cpu(sb, *p)) {
retry = 1;
brelse (bh);
goto next1;
}
bforget (bh);
sb_find_get_block() ordinarily returns a buffer_head with b_count>=2, and
this code assume that in case if "b_count>1" buffer is used, so this caused
infinite loop.
(akpm: that is-the-buffer-busy code is incomprehensible. Good riddance. Use
of block_truncate_page() seems sane).
Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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"rm" command, on file system with "ufs1" type cause system hang up. This
is, in fact, not so bad as it seems to be, because of after that in "kernel
control path" there are 3-4 places which may cause "oops".
So the first patch fix oopses, and the second patch fix "kernel hang up".
"oops" appears because of reading of group's summary info partly wrong, and
access to not first group's summary info cause "oops".
Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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I noticed that list.h init functions were evaluating macro arguments
multiple times and thought it might be nice to protect the unsuspecting
caller. Converting the macros to inline functions seems to reduce code
size, too. A i386 defconfig build with gcc 3.3.3 from fc4:
text data bss dec hex filename
3573148 565664 188828 4327640 4208d8 vmlinux.before
3572177 565664 188828 4326669 42050d vmlinux
add/remove: 0/0 grow/shrink: 11/144 up/down: 88/-1016 (-928)
There was no difference in checkstack output.
Signed-off-by: Zach Brown <zach.brown@oracle.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Noticed by Rune Torgersen.
Fix generic_fls64(). tcp_cubic is using fls64().
Signed-off-by: Akinobu Mita <mita@miraclelinux.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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kernel/power/power.h:49: error: static declaration of 'pm_prepare_console' follows non-static declaration
include/linux/suspend.h:46: error: previous declaration of 'pm_prepare_console' was here
kernel/power/power.h:50: error: static declaration of 'pm_restore_console' follows non-static declaration
include/linux/suspend.h:47: error: previous declaration of 'pm_restore_console' was here
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
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This patch adds support for SIIG 8-port boards. These boards have 4 ports in
separate bars and another 4 ports in the single bar. Because of this strange
port arrangement these cards need special setup function. Fortunately no other
SIIG cards have more than 4 port, so this setup function could be used for them
too.
Signed-off-by: Andrey Panin <pazke@donpac.ru>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Some hosts need to know the command type, so pass it via a set of
flags in cmd->flags.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
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Most of the 64 bit architectures will zero extend the first argument to
compat_sys_{openat,newfstatat,futimesat} which will fail if the 32 bit
syscall was passed AT_FDCWD (which is a small negative number). Declare
the first argument to be an unsigned int which will force the correct
sign extension when the internal functions are called in each case.
Also, do some small white space cleanups in fs/compat.c.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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RPCAUTH_CRED_LOCKED, and RPC_AUTH_PROC_CREDS are unused. Kill them.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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This fixes a bug whereby if two processes try to look up the same auth_gss
credential, they may end up creating two creds, and triggering two upcalls
because the upcall is performed before the credential is added to the
credcache.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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When we look up a new cred in the auth_gss downcall so that we can stuff
the credcache, we do not want that lookup to queue up an upcall in order
to initialise it. To do an upcall here not only redundant, but since we
are already holding the inode->i_mutex, it will trigger a lock recursion.
This patch allows rpcauth cache searches to indicate that they can cope
with uninitialised credentials.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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If the server returns NLM_LCK_DENIED_NOLOCKS, we currently retry the
entire NLM_CANCEL request. This may end up looping forever unless the
server changes its mind (why would it do that, though?).
Ensure that we limit the number of retries (to 3).
See bug# 5957 in bugzilla.kernel.org.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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The OpenGroup docs state that the arguments "block", "exclusive" and
"alock" must exactly match the arguments for the lock call that we are
trying to cancel.
Currently, "block" is always set to false, which is wrong.
See bug# 5956 on bugzilla.kernel.org.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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This function is completely unused since the xattr permission checking
changes. Remove it and fold __reiserfs_permission into
reiserfs_permission.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Jeff Mahoney <jeffm@suse.com>
Cc: Chris Mason <mason@suse.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Remove kmalloc() wrapper from fs/reiserfs/. Please note that a reiserfs
/proc entry format is changed because kmalloc statistics is removed.
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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Fix kzalloc() and kstrdup() caller report for CONFIG_DEBUG_SLAB. We must
pass the caller to __cache_alloc() instead of directly doing
__builtin_return_address(0) there; otherwise kzalloc() and kstrdup() are
reported as the allocation site instead of the real one.
Thanks to Valdis Kletnieks for reporting the problem and Steven Rostedt for
the original idea.
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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Migrate a page with buffers without requiring writeback
This introduces a new address space operation migratepage() that may be used
by a filesystem to implement its own version of page migration.
A version is provided that migrates buffers attached to pages. Some
filesystems (ext2, ext3, xfs) are modified to utilize this feature.
The swapper address space operation are modified so that a regular
migrate_page() will occur for anonymous pages without writeback (migrate_pages
forces every anonymous page to have a swap entry).
Signed-off-by: Mike Kravetz <kravetz@us.ibm.com>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Add remove_from_swap
remove_from_swap() allows the restoration of the pte entries that existed
before page migration occurred for anonymous pages by walking the reverse
maps. This reduces swap use and establishes regular pte's without the need
for page faults.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Add direct migration support with fall back to swap.
Direct migration support on top of the swap based page migration facility.
This allows the direct migration of anonymous pages and the migration of file
backed pages by dropping the associated buffers (requires writeout).
Fall back to swap out if necessary.
The patch is based on lots of patches from the hotplug project but the code
was restructured, documented and simplified as much as possible.
Note that an additional patch that defines the migrate_page() method for
filesystems is necessary in order to avoid writeback for anonymous and file
backed pages.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Mike Kravetz <kravetz@us.ibm.com>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Currently the zone_reclaim code has a fixed window of 30 seconds of off node
allocations should a local zone have no unused pagecache pages left. Reclaim
will be attempted again after this timeout period to avoid repeated useless
scans for memory. This is also useful to established sufficiently large off
node allocation chunks to relieve the local node.
It may be beneficial to adjust that time period for some special situations.
For example if memory use was exceeding node capacity one may want to give up
for longer periods of time. If memory spikes intermittendly then one may want
to shorten the time period to reduce the number of off node allocations.
This patch allows just that....
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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GFP_ZONETYPES calculate from GFP_ZONEMASK
GFP_ZONETYPES's value is directly related to the value of GFP_ZONEMASK. It
takes one of two forms depending whether the top bit of GFP_ZONEMASK is a
'loner'. Supply both forms, enabling the loner.
Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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GFP_ZONETYPES define using GFP_ZONEMASK and add commentry
Add commentry explaining the optimisation that we can apply to GFP_ZONETYPES
when the leftmost bit is a 'loaner', it can only be set in isolation.
Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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This arch-independent routine copies data to a memory-mapped I/O region,
using 32-bit accesses. The naming is double-underscored to make it clear
that it does not guarantee write ordering, nor does it perform a memory
barrier afterwards; the kernel doc also explicitly states this. This style
of access is required by some devices.
This change also introduces include/linux/io.h, at Andrew's suggestion. It
only has one occupant at the moment, but is a logical destination for
oft-replicated contents of include/asm-*/{io,iomap}.h to migrate to.
Signed-off-by: Bryan O'Sullivan <bos@pathscale.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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This can make the intent behind some arithmetic expressions clearer.
Signed-off-by: Bryan O'Sullivan <bos@pathscale.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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This function is neither used nor has any real contents.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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At some point we added credits to people who actively helped to bring
k/hr-timers along. This was lost in the big code revamp. Add it back.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Clean up the interface to hrtimers by changing the init code to pass the mode
as well as the clock. This allow the init code to select the correct base and
eliminates extra timer re-init code in posix-timers. We also simplify the
restart interface nanosleep use.
Signed-off-by: George Anzinger <george@mvista.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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From: Steven Rostedtrostedt@goodmis.org <rostedt@goodmis.org>
CPU0 expires a posix-timer and runs the callback function. The signal is
queued.
After releasing the posix-timer lock and before returning to hrtimer_run_queue
CPU0 gets interrupted. CPU1 delivers the queued signal and rearms the timer.
CPU0 comes back to hrtimer_run_queue and sets the timer state to expired.
The next modification of the timer can result in an oops, because the state
information is wrong.
Keep track of state = RUNNING and check if the state has been in the return
path of hrtimer_run_queue. In case the state has been changed, ignore a
restart request and do not touch the state variable.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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tpm_bios.c needs securityfs_xyz() functions.
Does include/linux/security.h need stubs for these, or should
char/tpm/Makefile just be modified to say:
ifdef CONFIG_ACPI
ifdef CONFIG_SECURITY
obj-$(CONFIG_TCG_TPM) += tpm_bios.o
endif
endif
drivers/char/tpm/tpm_bios.c:494: warning: implicit declaration of function 'securityfs_create_dir'
drivers/char/tpm/tpm_bios.c:494: warning: assignment makes pointer from integer without a cast
drivers/char/tpm/tpm_bios.c:499: warning: implicit declaration of function 'securityfs_create_file'
drivers/char/tpm/tpm_bios.c:501: warning: assignment makes pointer from integer without a cast
drivers/char/tpm/tpm_bios.c:508: warning: assignment makes pointer from integer without a cast
drivers/char/tpm/tpm_bios.c:523: warning: implicit declaration of function 'securityfs_remove'
*** Warning: "securityfs_create_file" [drivers/char/tpm/tpm_bios.ko] undefined!
*** Warning: "securityfs_create_dir" [drivers/char/tpm/tpm_bios.ko] undefined!
*** Warning: "securityfs_remove" [drivers/char/tpm/tpm_bios.ko] undefined!
There are also some gcc and sparse warnings that could be fixed.
(see http://www.xenotime.net/linux/doc/build-tpm.out)
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Cc: Serge Hallyn <serue@us.ibm.com>
Cc: Greg KH <greg@kroah.com>
Cc: Kylene Jo Hall <kjhall@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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drivers/md/dm-table.c:500: warning: comparison of distinct pointer types lacks a cast
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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While asynchronous reads mean a performance improvement in most cases, if
the filesystem assumed that reads are synchronous, then async reads may
degrade performance (filesystem may receive reads out of order, which can
confuse it's own readahead logic).
With sshfs a 1.5 to 4 times slowdown can be measured.
There's also a need for userspace filesystems to know whether asynchronous
reads are supported by the kernel or not.
To achive these, negotiate in the INIT request whether async reads will be
used and the maximum readahead value. Update interface version to 7.6
If userspace uses a version earlier than 7.6, then disable async reads, and
set maximum readahead value to the maximum read size, as done in previous
versions.
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Here's the follow-up patch which introduces the prototypes for the new
syscalls. There was also a typo in one of the new symbols.
Signed-off-by: Ulrich Drepper <drepper@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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pci_ids.h: remove duplicates. Compile tested allmodconfig.
Signed-off-by: Grant Coady <gcoady@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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