| Commit message (Collapse) | Author | Age | Files | Lines |
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Since the kthread api does not bump the reference count on
processes that tracked it is not safe allow user space to
kill the threads, as I still retain a pointer to the task_struct.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Eric Van Hensbergen <ericvh@gmail.com>
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* 'for-linus' of git://www.atmel.no/~hskinnemoen/linux/kernel/avr32:
[AVR32] Use per-controller spi_board_info structures
[AVR32] Warn, don't BUG if clk_disable is called too many times
[AVR32] Make sure all genclocks have a parent
[AVR32] Remove unnecessary sys_nfsservctl conditional
[AVR32] Wire up the SysV IPC calls properly
[AVR32] Define ioremap_nocache, ioport_map and ioport_unmap
[AVR32] Fix prototypes for __raw_writesb and friends
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Set up one spi_board_info array per controller and pass this to
at32_add_device_spi so that it can set up any GPIO pins for chip
selects based on this information.
Extracted from a patch by David Brownell and adapted slightly.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
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Print a helpful warning along with a stack dump if clk_disable is
called on a already-disabled clock. Remove the BUG_ON().
Extracted from a patch by David Brownell.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
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Initialize the parent field of each generic clock by looking at the
PM registers. This means that the genclock operations can always
assume that the parent field is non-null, so they don't have to
check. Also remove a few unnecessary BUG_ON()s.
Extracted from a patch by David Brownell.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
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kernel/sys_ni.c defines sys_nfsservctl as a weak alias for
sys_ni_syscall, so it's always safe to include it in the system
call table.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
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Wire up the individual sysvipc system calls and remove sys_ipc.
Strictly speaking, this breaks the ABI, but since sys_ipc never
worked anyway due to a silly bug, it isn't actually a regression.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
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These are all defined in terms of ioremap/iounmap since port I/O
isn't really different from memory-mapped I/O on AVR32.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
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The first parameter to __raw_writes[bwl] and __raw_reads[bwl] should
be a void __iomem *, not unsigned long.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
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* master.kernel.org:/pub/scm/linux/kernel/git/davej/agpgart:
[AGPGART] allow drm populated agp memory types cleanups
[AGPGART] intel-agp: Use ARRAY_SIZE macro when appropriate
[AGPGART] Add agp-type-to-mask-type method missing from some drivers.
[AGPGART] Don't try to remap i810 registers on resume.
[AGPGART] Allow drm-populated agp memory types
[AGPGART] compat ioctl
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Fix whitespace, braces, use kzalloc().
Cc: Dave Airlie <airlied@linux.ie>
Cc: Thomas Hellstrom <thomas@tungstengraphics.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Jones <davej@redhat.com>
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use ARRAY_SIZE macro already defined in kernel.h
Signed-off-by: Ahmed S. Darwish <darwish.07@gmail.com>
Signed-off-by: Dave Jones <davej@redhat.com>
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Signed-off-by: Dave Jones <davej@redhat.com>
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We don't unmap them on the suspend path, so on resume
trying to remap will fail, and then result in an
oops the next time something tries to access them.
Signed-off-by: Dave Jones <davej@redhat.com>
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This patch allows drm to populate an agpgart structure with pages of its own.
It's needed for the new drm memory manager which dynamically flips pages in and out of AGP.
The patch modifies the generic functions as well as the intel agp driver. The intel drm driver is
currently the only one supporting the new memory manager.
Other agp drivers may need some minor fixing up once they have a corresponding memory manager enabled drm driver.
AGP memory types >= AGP_USER_TYPES are not populated by the agpgart driver, but the drm is expected
to do that, as well as taking care of cache- and tlb flushing when needed.
It's not possible to request these types from user space using agpgart ioctls.
The Intel driver also gets a new memory type for pages that can be bound cached to the intel GTT.
Signed-off-by: Thomas Hellstrom <thomas@tungstengraphics.com>
Signed-off-by: Dave Jones <davej@redhat.com>
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The following video card requires the agpgart driver ioctl
interface in order to detect video memory.
00:02.0 VGA compatible controller: Intel Corporation Mobile
945GM/GMS/940GML Express Integrated Graphics Controller (rev 03)
Tested on a Thinkpad Z61t, Xorg.0.log from a 32bit debian Xorg is at;
http://montezuma.homeunix.net/Xorg.0.log
Signed-off-by: Zwane Mwaikambo <zwane@infradead.org>
Signed-off-by: Dave Jones <davej@redhat.com>
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* master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq:
[CPUFREQ] Longhaul - Redo Longhaul ver. 2
[CPUFREQ] EPS - Correct 2nd brand test
[CPUFREQ] Longhaul - Separate frequency and voltage transition
[CPUFREQ] Longhaul - Models of Nehemiah
[CPUFREQ] Whitespace fixup
[CPUFREQ] Longhaul - Simplier minmult
[CPUFREQ] CPU_FREQ_TABLE shouldn't be a def_tristate
[CPUFREQ] ondemand governor use new cpufreq rwsem locking in work callback
[CPUFREQ] ondemand governor restructure the work callback
[CPUFREQ] Rewrite lock in cpufreq to eliminate cpufreq/hotplug related issues
[CPUFREQ] Remove hotplug cpu crap
[CPUFREQ] Enhanced PowerSaver driver
[CPUFREQ] Longhaul - Add VT8235 support
[CPUFREQ] Longhaul - Fix guess_fsb function
[CPUFREQ] Longhaul - Remove duplicate tables
[CPUFREQ] Longhaul - Introduce Nehemiah C
[CPUFREQ] fix cpuinfo_cur_freq for CPU_HW_PSTATE
[CPUFREQ] Longhaul - Remove "ignore_latency" option
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Start using v2 version of Longhaul when available. It provides
voltage scaling and can use ACPI C3 state. That's curious. CPU
will not change frequency on ACPI C3 when v1 is in use, but it will
when v2 is used. Driver will return max frequency all the time if
this isn't true for all processors. There is strange thing with
mobile voltage. Looks like only Nehemiah (C3-M) supports it.
Earlier processors have different mobile VRM (in docs), but I can't
find any which is using it. Looks like all are using VRM 8.5. So
fail for non Nehemiah with mobile VRM.
Signed-off-by: Rafal Bilski <rafalbilski@interia.pl>
Signed-off-by: Dave Jones <davej@redhat.com>
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Solution for small, but nasty bug: access beyond end of f_table for C7 brand.
Signed-off-by: Rafal Bilski <rafalbilski@interia.pl>
Signed-off-by: Dave Jones <davej@redhat.com>
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Signed-off-by: Dave Jones <davej@redhat.com>
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This change should make Longhaul more compatible with
both ver. 2 and Powersaver processors. Voltage transitions
will be done before or after frequency transition. That depends
on direction of change. I don't know how to force conservative
governor when voltage scaling is enabled, so there is only
a warning for user. Minimal voltage is calculated in different
way now because in this way more power is saved at lower
multipliers.
Signed-off-by: Rafal Bilski <rafalbilski@interia.pl>
Signed-off-by: Dave Jones <davej@redhat.com>
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Borowed from VIA driver.
Signed-off-by: Rafal Bilski <rafalbilski@interia.pl>
Signed-off-by: Dave Jones <davej@redhat.com>
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Signed-off-by: Dave Jones <davej@redhat.com>
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Simple cleanup in code which is setting minmult.
Signed-off-by: Rafal Bilski <rafalbilski@interia.pl>
Signed-off-by: Dave Jones <davej@redhat.com>
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CPU_FREQ_TABLE enables helper code and gets select'ed when it's required.
Building it as a module when it's not required doesn't seem to make much sense.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Jones <davej@redhat.com>
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Eliminate flush_workqueue in cpufreq_governor(STOP) callpath. Using flush
there has a deadlock potential as in
http://uwsg.iu.edu/hypermail/linux/kernel/0611.3/1223.html
Also, cleanup the locking issues with do_dbs_timer delayed_work callback. As
it changes the CPU frequency using __cpufreq_target, it needs to have
policy_rwsem in write mode, which also protects it from hot plug.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: Gautham R Shenoy <ego@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Jones <davej@redhat.com>
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Restructure the delayed_work callback in ondemand.
This eliminates the need for smp_processor_id in the callback function and
also helps in proper locking and avoiding flush_workqueue when stopping the
governor (done in subsequent patch).
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: Gautham R Shenoy <ego@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Jones <davej@redhat.com>
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Yet another attempt to resolve cpufreq and hotplug locking issues.
Patchset has 3 patches:
* Rewrite the lock infrastructure of cpufreq using a per cpu rwsem.
* Minor restructuring of work callback in ondemand driver.
* Use the new cpufreq rwsem infrastructure in ondemand work.
This patch:
Convert policy->lock to rwsem and move it to per_cpu area.
This rwsem will protect against both changing/accessing policy
related parameters and CPU hot plug/unplug.
[malattia@linux.it: fix oops in kref_put()]
Cc: Gautham R Shenoy <ego@in.ibm.com>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: Gautham R Shenoy <ego@in.ibm.com>
Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Jones <davej@redhat.com>
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The hotplug CPU locking in cpufreq is horrendous. No-one seems to care
enough to fix it, so just remove it so that the 99.9% of the real world
users of this code can use cpufreq without being bothered by warnings.
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Jones <davej@redhat.com>
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This is driver for Enhanced Powersaver which is present in VIA C7
processors. Beta tested by Jorgen (jorgen (at) greven dot dk).
Thanks! Based on documentation provided by Dave Jones (Thanks!)
and C7 Eden datasheet available from www.via.com.tw. Looks like all
these C7 Eden CPU's don't have P-states in BIOS. I know that 2
p-states is low, but Jorgen finds it usefull anyway because board
is passive cooled.
There are 3 different types of C7 processors (called brands):
0. C7-M - these processors can set any maultiplier between min and
max, any voltage between min and max.
1. C7 - only min and max states are supported. Voltage is different
for min and max states.
2. Eden - only min and max states are supported. Looks like this
brand can only change multiplier. Voltage seems to be the same for
min and max frequency.
Signed-off-by: Rafal Bilski <rafalbilski@interia.pl>
Signed-off-by: Dave Jones <davej@redhat.com>
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I don't know why it is working and how, but it is working. On my
Epia transition time is by default set to 100us. I'm changing it to
200us. After that I can change frequency from min (x4.0) to max (x7.5)
without lockup. Many times.
There is a paranoid check at a beginning of a patch. Probably dead
code, but I don't have better ideas for CL10000 case at the moment.
Only way to to detect broken chip seems to be looking in log for
spurious interrupts.
Signed-off-by: Rafal Bilski <rafalbilski@interia.pl>
Signed-off-by: Dave Jones <davej@redhat.com>
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This is bug reported by John-Marc Chandonia:
> Detected 1002.292 MHz processor.
> longhaul: VIA C3 'Nehemiah B' [C5N] CPU detected. Powersaver supported.
> longhaul: Using throttling support.
> longhaul: Invalid (reserved) FSB!
FSB is correcly guessed for 999.554 MHz CPU.
To fix this error:
- ROUNDING should be range, not mask - at it's current value it is +7 -8,
- more precise calculations inside guess_fsb - 7.5x133MHz is 1000MHz now.
Signed-off-by: Rafal Bilski <rafalbilski@interia.pl>
Signed-off-by: Dave Jones <davej@redhat.com>
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Now there is no need to depend on -1 in Nehemiah tables. After
previous change code is eliminating multipliers lower then 5.0
by minmult for Nehemiah A and B.
Signed-off-by: Rafa³ Bilski <rafalbilski@interia.pl>
Signed-off-by: Dave Jones <davej@redhat.com>
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Looks like some time ago I introduced a bug to Longhaul.
I had report that 9x133Mhz CPU is seen as 5x133MHz. So I
changed multipliers table. That was a mistake. According to
documentation table was correct. So only way to avoid 5 or 9
dilema is not use MaxMHzBR for PowerSaver 1.0. One code that
works on all processors. To do it I need also separate flag for
Nehemiah C (min = x4.0) and Nehemiah (min = x5.0).
Signed-off-by: Rafa³ Bilski <rafalbilski@interia.pl>
Signed-off-by: Dave Jones <davej@redhat.com>
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This fixes the cpuinfo_cur_freq value by using the correct
find_khz_freq_from_fiddid() when the CPU uses hardware p-states.
Signed-off-by: Joachim Deguara <joachim.deguara@amd.com>
Acked-by: Mark Langsdorf <mark.langsdorf@amd.com>
Signed-off-by: Dave Jones <davej@redhat.com>
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There is no need to have this option in Longhaul anymore.
It was for laptop with CLE266 chipset in times, when only
ACPI C3 was used to switch frequency. Now we have native
support not only for CLE266, but CN400 too. Would be good
to have support for PN266, but I can't find datasheet for it.
Looks like BIOS for CPU's faster then 1GHz don't support
ACPI C2 nor C3.
Signed-off-by: Rafa³ Bilski <rafalbilski@interia.pl>
Signed-off-by: Dave Jones <davej@redhat.com>
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The current driver is not setting the dev field in the private data
structure, which can lead to an OOPS if the driver tries to report an
error.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Cc: James Simmons <jsimmons@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Add format specifier %d for uid in ecryptfs_printk
Signed-off-by: Thomas Hisch <t.hisch@gmail.com>
Cc: Michael Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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eCryptfs is gobbling a lot of stack in ecryptfs_generate_key_packet_set()
because it allocates a temporary memory-hungry ecryptfs_key_record struct.
This patch introduces a new kmem_cache for that struct and converts
ecryptfs_generate_key_packet_set() to use it.
Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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to filesystem
When NFSD receives a write request, the data is typically in a number of
1448 byte segments and writev is used to collect them together.
Unfortunately, generic_file_buffered_write passes these to the filesystem
one at a time, so an e.g. 32K over-write becomes a series of partial-page
writes to each page, causing the filesystem to have to pre-read those pages
- wasted effort.
generic_file_buffered_write handles one segment of the vector at a time as
it has to pre-fault in each segment to avoid deadlocks. When writing from
kernel-space (and nfsd does) this is not an issue, so
generic_file_buffered_write does not need to break and iovec from nfsd into
little pieces.
This patch avoids the splitting when get_fs is KERNEL_DS as it is
from NFSd.
This issue was introduced by commit 6527c2bdf1f833cc18e8f42bd97973d583e4aa83
Acked-by: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Norman Weathers <norman.r.weathers@conocophillips.com>
Cc: Vladimir V. Saveliev <vs@namesys.com>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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When setting an ACL that lacks inheritable ACEs on a directory, we should set
a default ACL of zero length, not a default ACL with all bits denied.
Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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We're inserting deny's between some ACEs in order to enforce posix draft acl
semantics which prevent permissions from accumulating across entries in an
acl.
That's fine, but we're doing that by inserting a deny after *every* allow,
which is overkill. We shouldn't be adding them in places where they actually
make no difference.
Also replaced some helper functions for creating acl entries; I prefer just
assigning directly to the struct fields--it takes a few more lines, but the
field names provide some documentation that I think makes the result easier
understand.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Return just the effective permissions, and forget about the mask. It isn't
worth the complexity.
WARNING: This breaks backwards compatibility with overly-picky nfsv4->posix
acl translation, as may has been included in some patched versions of libacl.
To our knowledge no such version was every distributed by anyone outside citi.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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We should be returning ATTRNOTSUPP, not NOTSUPP, when acls are unsupported.
Also fix a comment.
Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The wrong pointer is being kfree'd in savemem() when defer_free returns with
an error.
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Simplify the memory management and code a bit by representing acls with an
array instead of a linked list.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The code that splits an incoming nfsv4 ACL into inheritable and effective
parts can be combined with the the code that translates each to a posix acl,
resulting in simpler code that requires one less pass through the ACL.
Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The rfc allows us to be more permissive about the ACL inheritance bits we
accept:
"If the server supports a single "inherit ACE" flag that applies to
both files and directories, the server may reject the request
(i.e., requiring the client to set both the file and directory
inheritance flags). The server may also accept the request and
silently turn on the ACE4_DIRECTORY_INHERIT_ACE flag."
Let's take the latter option--the ACL is a complex attribute that could be
rejected for a wide variety of reasons, and the protocol gives us little
ability to explain the reason for the rejection, so erroring out is a
user-unfriendly last resort.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The server name is expected to be a null-terminated string, so we can't pass
in the raw client identifier.
What's more, the client identifier is just a binary, not necessarily
printable, blob. Let's just use the ip address instead. The server name
appears to exist just to help debugging by making some printk's more
informative.
Note that the string is copies into the rpc client structure, so the pointer
to the local variable does not outlive the function call.
Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Use mask_ack_irq() where possible.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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