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2012-01-03switch ->create() to umode_tAl Viro
vfs_create() ignores everything outside of 16bit subset of its mode argument; switching it to umode_t is obviously equivalent and it's the only caller of the method Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03switch vfs_mkdir() and ->mkdir() to umode_tAl Viro
vfs_mkdir() gets int, but immediately drops everything that might not fit into umode_t and that's the only caller of ->mkdir()... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03switch sys_mknodat(2) to umode_tAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: new helper - vfs_ustat()Al Viro
... and bury user_get_super()/statfs_by_dentry() - they are purely internal now. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: mnt_drop_write_file()Al Viro
new helper (wrapper around mnt_drop_write()) to be used in pair with mnt_want_write_file(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03constify seq_file stuffAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: make do_kern_mount() staticAl Viro
the only user outside of fs/namespace.c has died Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: convert fs_supers to hlistAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03unexport put_mnt_ns(), make create_mnt_ns() static outrightAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03pull manipulations of rpc_cred inside alloc_nfs_open_context()Al Viro
No need to duplicate them in both callers; make it return ERR_PTR(-ENOMEM) on allocation failure instead of NULL and it'll be able to report rpc_lookup_cred() failures just fine. Callers are much happier that way... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03security: Fix security_old_inode_init_security() when CONFIG_SECURITY is not setJan Kara
Commit 1e39f384bb01 ("evm: fix build problems") makes the stub version of security_old_inode_init_security() return 0 when CONFIG_SECURITY is not set. But that makes callers such as reiserfs_security_init() assume that security_old_inode_init_security() has set name, value, and len arguments properly - but security_old_inode_init_security() left them uninitialized which then results in interesting failures. Revert security_old_inode_init_security() to the old behavior of returning EOPNOTSUPP since both callers (reiserfs and ocfs2) handle this just fine. [ Also fixed the S_PRIVATE(inode) case of the actual non-stub security_old_inode_init_security() function to return EOPNOTSUPP for the same reason, as pointed out by Mimi Zohar. It got incorrectly changed to match the new function in commit fb88c2b6cbb1: "evm: fix security/security_old_init_security return code". - Linus ] Reported-by: Jorge Bastos <mysql.jorge@decimal.pt> Acked-by: James Morris <jmorris@namei.org> Acked-by: Mimi Zohar <zohar@us.ibm.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-12-31ipvs: try also real server with port 0 in backup serverJulian Anastasov
We should not forget to try for real server with port 0 in the backup server when processing the sync message. We should do it in all cases because the backup server can use different forwarding method. Signed-off-by: Julian Anastasov <ja@ssi.bg> Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2011-12-29procfs: do not confuse jiffies with cputime64_tAndreas Schwab
Commit 2a95ea6c0d129b4 ("procfs: do not overflow get_{idle,iowait}_time for nohz") did not take into account that one some architectures jiffies and cputime use different units. This causes get_idle_time() to return numbers in the wrong units, making the idle time fields in /proc/stat wrong. Instead of converting the usec value returned by get_cpu_{idle,iowait}_time_us to units of jiffies, use the new function usecs_to_cputime64 to convert it to the correct unit of cputime64_t. Signed-off-by: Andreas Schwab <schwab@linux-m68k.org> Acked-by: Michal Hocko <mhocko@suse.cz> Cc: Arnd Bergmann <arnd@arndb.de> Cc: "Artem S. Tashkinov" <t.artem@mailcity.com> Cc: Dave Jones <davej@redhat.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-12-26KVM: Don't automatically expose the TSC deadline timer in cpuidJan Kiszka
Unlike all of the other cpuid bits, the TSC deadline timer bit is set unconditionally, regardless of what userspace wants. This is broken in several ways: - if userspace doesn't use KVM_CREATE_IRQCHIP, and doesn't emulate the TSC deadline timer feature, a guest that uses the feature will break - live migration to older host kernels that don't support the TSC deadline timer will cause the feature to be pulled from under the guest's feet; breaking it - guests that are broken wrt the feature will fail. Fix by not enabling the feature automatically; instead report it to userspace. Because the feature depends on KVM_CREATE_IRQCHIP, which we cannot guarantee will be called, we expose it via a KVM_CAP_TSC_DEADLINE_TIMER and not KVM_GET_SUPPORTED_CPUID. Fixes the Illumos guest kernel, which uses the TSC deadline timer feature. [avi: add the KVM_CAP + documentation] Reported-by: Alexey Zaytsev <alexey.zaytsev@gmail.com> Tested-by: Alexey Zaytsev <alexey.zaytsev@gmail.com> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-23Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: VFS: Fix race between CPU hotplug and lglocks
2011-12-23Merge tag 'writeback' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linuxLinus Torvalds
for linus: writeback reason binary tracing format fix * tag 'writeback' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux: writeback: show writeback reason with __print_symbolic
2011-12-23net: relax rcvbuf limitsEric Dumazet
skb->truesize might be big even for a small packet. Its even bigger after commit 87fb4b7b533 (net: more accurate skb truesize) and big MTU. We should allow queueing at least one packet per receiver, even with a low RCVBUF setting. Reported-by: Michal Simek <monstr@monstr.eu> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-22net: introduce DST_NOPEER dst flagEric Dumazet
Chris Boot reported crashes occurring in ipv6_select_ident(). [ 461.457562] RIP: 0010:[<ffffffff812dde61>] [<ffffffff812dde61>] ipv6_select_ident+0x31/0xa7 [ 461.578229] Call Trace: [ 461.580742] <IRQ> [ 461.582870] [<ffffffff812efa7f>] ? udp6_ufo_fragment+0x124/0x1a2 [ 461.589054] [<ffffffff812dbfe0>] ? ipv6_gso_segment+0xc0/0x155 [ 461.595140] [<ffffffff812700c6>] ? skb_gso_segment+0x208/0x28b [ 461.601198] [<ffffffffa03f236b>] ? ipv6_confirm+0x146/0x15e [nf_conntrack_ipv6] [ 461.608786] [<ffffffff81291c4d>] ? nf_iterate+0x41/0x77 [ 461.614227] [<ffffffff81271d64>] ? dev_hard_start_xmit+0x357/0x543 [ 461.620659] [<ffffffff81291cf6>] ? nf_hook_slow+0x73/0x111 [ 461.626440] [<ffffffffa0379745>] ? br_parse_ip_options+0x19a/0x19a [bridge] [ 461.633581] [<ffffffff812722ff>] ? dev_queue_xmit+0x3af/0x459 [ 461.639577] [<ffffffffa03747d2>] ? br_dev_queue_push_xmit+0x72/0x76 [bridge] [ 461.646887] [<ffffffffa03791e3>] ? br_nf_post_routing+0x17d/0x18f [bridge] [ 461.653997] [<ffffffff81291c4d>] ? nf_iterate+0x41/0x77 [ 461.659473] [<ffffffffa0374760>] ? br_flood+0xfa/0xfa [bridge] [ 461.665485] [<ffffffff81291cf6>] ? nf_hook_slow+0x73/0x111 [ 461.671234] [<ffffffffa0374760>] ? br_flood+0xfa/0xfa [bridge] [ 461.677299] [<ffffffffa0379215>] ? nf_bridge_update_protocol+0x20/0x20 [bridge] [ 461.684891] [<ffffffffa03bb0e5>] ? nf_ct_zone+0xa/0x17 [nf_conntrack] [ 461.691520] [<ffffffffa0374760>] ? br_flood+0xfa/0xfa [bridge] [ 461.697572] [<ffffffffa0374812>] ? NF_HOOK.constprop.8+0x3c/0x56 [bridge] [ 461.704616] [<ffffffffa0379031>] ? nf_bridge_push_encap_header+0x1c/0x26 [bridge] [ 461.712329] [<ffffffffa037929f>] ? br_nf_forward_finish+0x8a/0x95 [bridge] [ 461.719490] [<ffffffffa037900a>] ? nf_bridge_pull_encap_header+0x1c/0x27 [bridge] [ 461.727223] [<ffffffffa0379974>] ? br_nf_forward_ip+0x1c0/0x1d4 [bridge] [ 461.734292] [<ffffffff81291c4d>] ? nf_iterate+0x41/0x77 [ 461.739758] [<ffffffffa03748cc>] ? __br_deliver+0xa0/0xa0 [bridge] [ 461.746203] [<ffffffff81291cf6>] ? nf_hook_slow+0x73/0x111 [ 461.751950] [<ffffffffa03748cc>] ? __br_deliver+0xa0/0xa0 [bridge] [ 461.758378] [<ffffffffa037533a>] ? NF_HOOK.constprop.4+0x56/0x56 [bridge] This is caused by bridge netfilter special dst_entry (fake_rtable), a special shared entry, where attaching an inetpeer makes no sense. Problem is present since commit 87c48fa3b46 (ipv6: make fragment identifications less predictable) Introduce DST_NOPEER dst flag and make sure ipv6_select_ident() and __ip_select_ident() fallback to the 'no peer attached' handling. Reported-by: Chris Boot <bootc@bootc.net> Tested-by: Chris Boot <bootc@bootc.net> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-22VFS: Fix race between CPU hotplug and lglocksSrivatsa S. Bhat
Currently, the *_global_[un]lock_online() routines are not at all synchronized with CPU hotplug. Soft-lockups detected as a consequence of this race was reported earlier at https://lkml.org/lkml/2011/8/24/185. (Thanks to Cong Meng for finding out that the root-cause of this issue is the race condition between br_write_[un]lock() and CPU hotplug, which results in the lock states getting messed up). Fixing this race by just adding {get,put}_online_cpus() at appropriate places in *_global_[un]lock_online() is not a good option, because, then suddenly br_write_[un]lock() would become blocking, whereas they have been kept as non-blocking all this time, and we would want to keep them that way. So, overall, we want to ensure 3 things: 1. br_write_lock() and br_write_unlock() must remain as non-blocking. 2. The corresponding lock and unlock of the per-cpu spinlocks must not happen for different sets of CPUs. 3. Either prevent any new CPU online operation in between this lock-unlock, or ensure that the newly onlined CPU does not proceed with its corresponding per-cpu spinlock unlocked. To achieve all this: (a) We introduce a new spinlock that is taken by the *_global_lock_online() routine and released by the *_global_unlock_online() routine. (b) We register a callback for CPU hotplug notifications, and this callback takes the same spinlock as above. (c) We maintain a bitmap which is close to the cpu_online_mask, and once it is initialized in the lock_init() code, all future updates to it are done in the callback, under the above spinlock. (d) The above bitmap is used (instead of cpu_online_mask) while locking and unlocking the per-cpu locks. The callback takes the spinlock upon the CPU_UP_PREPARE event. So, if the br_write_lock-unlock sequence is in progress, the callback keeps spinning, thus preventing the CPU online operation till the lock-unlock sequence is complete. This takes care of requirement (3). The bitmap that we maintain remains unmodified throughout the lock-unlock sequence, since all updates to it are managed by the callback, which takes the same spinlock as the one taken by the lock code and released only by the unlock routine. Combining this with (d) above, satisfies requirement (2). Overall, since we use a spinlock (mentioned in (a)) to prevent CPU hotplug operations from racing with br_write_lock-unlock, requirement (1) is also taken care of. By the way, it is to be noted that a CPU offline operation can actually run in parallel with our lock-unlock sequence, because our callback doesn't react to notifications earlier than CPU_DEAD (in order to maintain our bitmap properly). And this means, since we use our own bitmap (which is stale, on purpose) during the lock-unlock sequence, we could end up unlocking the per-cpu lock of an offline CPU (because we had locked it earlier, when the CPU was online), in order to satisfy requirement (2). But this is harmless, though it looks a bit awkward. Debugged-by: Cong Meng <mc@linux.vnet.ibm.com> Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Cc: stable@vger.kernel.org
2011-12-21Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: net: Add a flow_cache_flush_deferred function ipv4: reintroduce route cache garbage collector net: have ipconfig not wait if no dev is available sctp: Do not account for sizeof(struct sk_buff) in estimated rwnd asix: new device id davinci-cpdma: fix locking issue in cpdma_chan_stop sctp: fix incorrect overflow check on autoclose r8169: fix Config2 MSIEnable bit setting. llc: llc_cmsg_rcv was getting called after sk_eat_skb. net: bpf_jit: fix an off-one bug in x86_64 cond jump target iwlwifi: update SCD BC table for all SCD queues Revert "Bluetooth: Revert: Fix L2CAP connection establishment" Bluetooth: Clear RFCOMM session timer when disconnecting last channel Bluetooth: Prevent uninitialized data access in L2CAP configuration iwlwifi: allow to switch to HT40 if not associated iwlwifi: tx_sync only on PAN context mwifiex: avoid double list_del in command cancel path ath9k: fix max phy rate at rate control init nfc: signedness bug in __nci_request() iwlwifi: do not set the sequence control bit is not needed
2011-12-21net: Add a flow_cache_flush_deferred functionSteffen Klassert
flow_cach_flush() might sleep but can be called from atomic context via the xfrm garbage collector. So add a flow_cache_flush_deferred() function and use this if the xfrm garbage colector is invoked from within the packet path. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Acked-by: Timo Teräs <timo.teras@iki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-20Merge branch 'timers-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: time/clocksource: Fix kernel-doc warnings rtc: m41t80: Workaround broken alarm functionality rtc: Expire alarms after the time is set.
2011-12-20Merge branch 'stable/for-linus-fixes-3.2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen * 'stable/for-linus-fixes-3.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: Revert "xen/pv-on-hvm kexec: add xs_reset_watches to shutdown watches from old kernel"
2011-12-20Merge branch 'v4l_for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media * 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (31 commits) Revert "[media] af9015: limit I2C access to keep FW happy" [media] s5p-fimc: Fix camera input configuration in subdev operations [media] m5mols: Fix logic in sanity check [media] ati_remote: switch to single-byte scancodes [media] V4L: mt9m111: fix uninitialised mutex [media] V4L: omap1_camera: fix missing <linux/module.h> include [media] V4L: mt9t112: use after free in mt9t112_probe() [media] V4L: soc-camera: fix compiler warnings on 64-bit platforms [media] s5p_mfc_enc: fix s/H264/H263/ typo [media] omap_vout: Fix compile error in 3.1 [media] au0828: add missing models 72101, 72201 & 72261 to the model matrix [media] au0828: add missing USB ID 2040:7213 [media] au0828: add missing USB ID 2040:7260 [media] [trivial] omap24xxcam-dma: Fix logical test [media] omap_vout: fix crash if no driver for a display [media] media: video: s5p-tv: fix build break [media] omap3isp: fix compilation of ispvideo.c [media] m5mols: Fix set_fmt to return proper pixel format code [media] s5p-fimc: Use correct fourcc for RGB565 colour format [media] s5p-fimc: Fail driver probing when sensor configuration is wrong ...
2011-12-19sctp: fix incorrect overflow check on autocloseXi Wang
Commit 8ffd3208 voids the previous patches f6778aab and 810c0719 for limiting the autoclose value. If userspace passes in -1 on 32-bit platform, the overflow check didn't work and autoclose would be set to 0xffffffff. This patch defines a max_autoclose (in seconds) for limiting the value and exposes it through sysctl, with the following intentions. 1) Avoid overflowing autoclose * HZ. 2) Keep the default autoclose bound consistent across 32- and 64-bit platforms (INT_MAX / HZ in this patch). 3) Keep the autoclose value consistent between setsockopt() and getsockopt() calls. Suggested-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: Xi Wang <xi.wang@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-19Revert "xen/pv-on-hvm kexec: add xs_reset_watches to shutdown watches from ↵Konrad Rzeszutek Wilk
old kernel" This reverts commit ddacf5ef684a655abe2bb50c4b2a5b72ae0d5e05. As when booting the kernel under Amazon EC2 as an HVM guest it ends up hanging during startup. Reverting this we loose the fix for kexec booting to the crash kernels. Fixes Canonical BZ #901305 (http://bugs.launchpad.net/bugs/901305) Tested-by: Alessandro Salvatori <sandr8@gmail.com> Reported-by: Stefan Bader <stefan.bader@canonical.com> Acked-by: Ian Campbell <Ian.Campbell@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2011-12-19time/clocksource: Fix kernel-doc warningsKusanagi Kouichi
Fix various KernelDoc build warnings. Signed-off-by: Kusanagi Kouichi <slash@ac.auone-net.jp> Cc: John Stultz <johnstul@us.ibm.com> Link: http://lkml.kernel.org/r/20111219091320.0D5AF6FC03D@msa105.auone-net.jp Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-12-18Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: (22 commits) [SCSI] fcoe: fix fcoe in a DCB environment by adding DCB notifiers to set skb priority [SCSI] bnx2i: Fixed kernel panic caused by unprotected task->sc->request deref [SCSI] qla4xxx: check for failed conn setup [SCSI] qla4xxx: a small loop fix [SCSI] qla4xxx: fix flash/ddb support [SCSI] zfcp: return early from slave_destroy if slave_alloc returned early [SCSI] fcoe: Fix preempt count leak in fcoe_filter_frames() [SCSI] qla2xxx: Update version number to 8.03.07.12-k. [SCSI] qla2xxx: Submit all chained IOCBs for passthrough commands on request queue 0. [SCSI] qla2xxx: Correct fc_host port_state display. [SCSI] qla2xxx: Disable generating pause frames when firmware hang detected for ISP82xx. [SCSI] qla2xxx: Clear mailbox busy flag during premature mailbox completion for ISP82xx. [SCSI] qla2xxx: Encapsulate prematurely completing mailbox commands during ISP82xx firmware hang. [SCSI] qla2xxx: Display IPE error message for ISP82xx. [SCSI] qla2xxx: Return the correct value for a mailbox command if 82xx is in reset recovery. [SCSI] qla2xxx: Enable Minidump by default with default capture mask 0x1f. [SCSI] qla2xxx: Stop unconditional completion of mailbox commands issued in interrupt mode during firmware hang. [SCSI] qla2xxx: Revert back the request queue mapping to request queue 0. [SCSI] qla2xxx: Don't call alloc_fw_dump for ISP82XX. [SCSI] qla2xxx: Check for SCSI status on underruns. ...
2011-12-18writeback: show writeback reason with __print_symbolicWu Fengguang
This makes the binary trace understandable by trace-cmd. CC: Dave Chinner <david@fromorbit.com> CC: Curt Wohlgemuth <curtw@google.com> CC: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
2011-12-16Merge branch 'drm-intel-fixes' of git://people.freedesktop.org/~keithp/linuxLinus Torvalds
* 'drm-intel-fixes' of git://people.freedesktop.org/~keithp/linux: drm/i915/dp: Dither down to 6bpc if it makes the mode fit drm/i915: enable semaphores on per-device defaults drm/i915: don't set unpin_work if vblank_get fails drm/i915: By default, enable RC6 on IVB and SNB when reasonable iommu: Export intel_iommu_enabled to signal when iommu is in use drm/i915/sdvo: Include LVDS panels for the IS_DIGITAL check drm/i915: prevent division by zero when asking for chipset power drm/i915: add PCH info to i915_capabilities drm/i915: set the right SDVO transcoder for CPT drm/i915: no-lvds quirk for ASUS AT5NM10T-I drm/i915: Treat pre-gen4 backlight duty cycle value consistently drm/i915: Hook up Ivybridge eDP drm/i915: add multi-threaded forcewake support
2011-12-16Merge branch 'for-linus' of git://git.kernel.dk/linux-blockLinus Torvalds
* 'for-linus' of git://git.kernel.dk/linux-block: block: don't kick empty queue in blk_drain_queue() block/swim3: Locking fixes loop: Fix discard_alignment default setting cfq-iosched: fix cfq_cic_link() race confition cfq-iosched: free cic_index if blkio_alloc_blkg_stats fails cciss: fix flush cache transfer length cciss: Add IRQF_SHARED back in for the non-MSI(X) interrupt handler loop: fix loop block driver discard and encryption comment block: initialize request_queue's numa node during
2011-12-16iommu: Export intel_iommu_enabled to signal when iommu is in useEugeni Dodonov
In i915 driver, we do not enable either rc6 or semaphores on SNB when dmar is enabled. The new 'intel_iommu_enabled' variable signals when the iommu code is in operation. Cc: Ted Phelps <phelps@gnusto.com> Cc: Peter <pab1612@gmail.com> Cc: Lukas Hejtmanek <xhejtman@fi.muni.cz> Cc: Andrew Lutomirski <luto@mit.edu> CC: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Eugeni Dodonov <eugeni.dodonov@intel.com> Signed-off-by: Keith Packard <keithp@keithp.com>
2011-12-15[SCSI] fcoe: fix fcoe in a DCB environment by adding DCB notifiers to set ↵john fastabend
skb priority Use DCB notifiers to set the skb priority to allow packets to be steered and tagged correctly over DCB enabled drivers that setup traffic classes. This allows queue_mapping() routines to be removed in these drivers that were previously inspecting the ethertype of every skb to mark FCoE/FIP frames. Signed-off-by: John Fastabend <john.r.fastabend@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-12-14drm/radeon/kms: add some new pci idsAlex Deucher
Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=43739 Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-12-12linux/log2.h: Fix rounddown_pow_of_two(1)Linus Torvalds
Exactly like roundup_pow_of_two(1), the rounddown version was buggy for the case of a compile-time constant '1' argument. Probably because it originated from the same code, sharing history with the roundup version from before the bugfix (for that one, see commit 1a06a52ee1b0: "Fix roundup_pow_of_two(1)"). However, unlike the roundup version, the fix for rounddown is to just remove the broken special case entirely. It's simply not needed - the generic code 1UL << ilog2(n) does the right thing for the constant '1' argment too. The only reason roundup needed that special case was because rounding up does so by subtracting one from the argument (and then adding one to the result) causing the obvious problems with "ilog2(0)". But rounddown doesn't do any of that, since ilog2() naturally truncates (ie "rounds down") to the right rounded down value. And without the ilog2(0) case, there's no reason for the special case that had the wrong value. tl;dr: rounddown_pow_of_two(1) should be 1, not 0. Acked-by: Dmitry Torokhov <dtor@vmware.com> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-12-12Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: mmc: core: Fix deadlock when the CONFIG_MMC_UNSAFE_RESUME is not defined mmc: sdhci-s3c: Remove old and misprototyped suspend operations mmc: tmio: fix clock gating on platforms with a .set_pwr() method mmc: sh_mmcif: fix clock gating on platforms with a .down_pwr() method mmc: core: Fix typo at mmc_card_sleep mmc: core: Fix power_off_notify during suspend mmc: core: Fix setting power notify state variable for non-eMMC mmc: core: Add quirk for long data read time mmc: Add module.h include to sdhci-cns3xxx.c mmc: mxcmmc: fix falling back to PIO mmc: omap_hsmmc: DMA unmap only once in case of MMC error
2011-12-11[media] V4L: soc-camera: fix compiler warnings on 64-bit platformsGuennadi Liakhovetski
On 64-bit platforms assigning a pointer to a 32-bit variable causes a compiler warning and cannot actually work. Soc-camera currently doesn't support any 64-bit systems, but such platforms can be added in the and in any case compiler warnings should be avoided. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-12-10mmc: core: Add quirk for long data read timeStefan Nilsson XK
Adds a quirk that sets the data read timeout to a fixed value instead of relying on the information in the CSD. The timeout value chosen is 300ms since that has proven enough for the problematic cards found, but could be increased if other cards require this. This patch also enables this quirk for certain Micron cards known to have this problem. Signed-off-by: Stefan Nilsson XK <stefan.xk.nilsson@stericsson.com> Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Cc: <stable@kernel.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-12-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tileLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile: arch/tile: use new generic {enable,disable}_percpu_irq() routines drivers/net/ethernet/tile: use skb_frag_page() API asm-generic/unistd.h: support new process_vm_{readv,write} syscalls arch/tile: fix double-free bug in homecache_free_pages() arch/tile: add a few #includes and an EXPORT to catch up with kernel changes.
2011-12-09vmscan: use atomic-long for shrinker batchingKonstantin Khlebnikov
Use atomic-long operations instead of looping around cmpxchg(). [akpm@linux-foundation.org: massage atomic.h inclusions] Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org> Cc: Dave Chinner <david@fromorbit.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-12-07Merge branch '3.2-rc-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending * '3.2-rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (25 commits) iscsi-target: Fix hex2bin warn_unused compile message target: Don't return an error if disabling unsupported features target/rd: fix or rewrite the copy routine target/rd: simplify the page/offset computation target: remove the unused se_dev_list target/file: walk properly over sg list target: remove unused struct fields target: Fix page length in emulated INQUIRY VPD page 86h target: Handle 0 correctly in transport_get_sectors_6() target: Don't return an error status for 0-length READ and WRITE iscsi-target: Use kmemdup rather than duplicating its implementation iscsi-target: Add missing F_BIT for iscsi_tm_rsp iscsi-target: Fix residual count hanlding + remove iscsi_cmd->residual_count target: Reject SCSI data overflow for fabrics using transport_generic_map_mem_to_cmd target: remove the unused t_task_pt_sgl and t_task_pt_sgl_num se_cmd fields target: remove the t_tasks_bidi se_cmd field target: remove the t_tasks_fua se_cmd field target: remove the se_ordered_node se_cmd field target: remove the se_obj_ptr and se_orig_obj_ptr se_cmd fields target: Drop config_item_name usage in fabric TFO->free_wwn() ...
2011-12-07Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: fix apparmor dereferencing potentially freed dentry, sanitize __d_path() API
2011-12-06fix apparmor dereferencing potentially freed dentry, sanitize __d_path() APIAl Viro
__d_path() API is asking for trouble and in case of apparmor d_namespace_path() getting just that. The root cause is that when __d_path() misses the root it had been told to look for, it stores the location of the most remote ancestor in *root. Without grabbing references. Sure, at the moment of call it had been pinned down by what we have in *path. And if we raced with umount -l, we could have very well stopped at vfsmount/dentry that got freed as soon as prepend_path() dropped vfsmount_lock. It is safe to compare these pointers with pre-existing (and known to be still alive) vfsmount and dentry, as long as all we are asking is "is it the same address?". Dereferencing is not safe and apparmor ended up stepping into that. d_namespace_path() really wants to examine the place where we stopped, even if it's not connected to our namespace. As the result, it looked at ->d_sb->s_magic of a dentry that might've been already freed by that point. All other callers had been careful enough to avoid that, but it's really a bad interface - it invites that kind of trouble. The fix is fairly straightforward, even though it's bigger than I'd like: * prepend_path() root argument becomes const. * __d_path() is never called with NULL/NULL root. It was a kludge to start with. Instead, we have an explicit function - d_absolute_root(). Same as __d_path(), except that it doesn't get root passed and stops where it stops. apparmor and tomoyo are using it. * __d_path() returns NULL on path outside of root. The main caller is show_mountinfo() and that's precisely what we pass root for - to skip those outside chroot jail. Those who don't want that can (and do) use d_path(). * __d_path() root argument becomes const. Everyone agrees, I hope. * apparmor does *NOT* try to use __d_path() or any of its variants when it sees that path->mnt is an internal vfsmount. In that case it's definitely not mounted anywhere and dentry_path() is exactly what we want there. Handling of sysctl()-triggered weirdness is moved to that place. * if apparmor is asked to do pathname relative to chroot jail and __d_path() tells it we it's not in that jail, the sucker just calls d_absolute_path() instead. That's the other remaining caller of __d_path(), BTW. * seq_path_root() does _NOT_ return -ENAMETOOLONG (it's stupid anyway - the normal seq_file logics will take care of growing the buffer and redoing the call of ->show() just fine). However, if it gets path not reachable from root, it returns SEQ_SKIP. The only caller adjusted (i.e. stopped ignoring the return value as it used to do). Reviewed-by: John Johansen <john.johansen@canonical.com> ACKed-by: John Johansen <john.johansen@canonical.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Cc: stable@vger.kernel.org
2011-12-06Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: ftrace: Fix hash record accounting bug perf: Fix parsing of __print_flags() in TP_printk() jump_label: jump_label_inc may return before the code is patched ftrace: Remove force undef config value left for testing tracing: Restore system filter behavior tracing: fix event_subsystem ref counting
2011-12-06target: remove the unused se_dev_listChristoph Hellwig
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2011-12-06target: remove unused struct fieldsJörn Engel
Some are never used, some are set but never read, dev_hoq_count is incremented and decremented, but never read. Signed-off-by: Joern Engel <joern@logfs.org> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2011-12-06target: remove the unused t_task_pt_sgl and t_task_pt_sgl_num se_cmd fieldsChristoph Hellwig
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2011-12-06target: remove the t_tasks_bidi se_cmd fieldChristoph Hellwig
And use a SCF_BIDI flag instead. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2011-12-06target: remove the t_tasks_fua se_cmd fieldChristoph Hellwig
And use a SCF_FUA flag instead. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2011-12-06target: remove the se_ordered_node se_cmd fieldChristoph Hellwig
We never walk ordered_cmd_list in the se_device, so remove all code related to supporting it. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>