- 28 Jan, 2014 22 commits
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Valentina Giusti authored
Signed-off-by: Valentina Giusti <valentina.giusti@microon.de> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <clm@fb.com>
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Valentina Giusti authored
The variable window_start in setup_cluster_no_bitmap is not used since commit 1bb91902 (Btrfs: revamp clustered allocation logic) Signed-off-by: Valentina Giusti <valentina.giusti@microon.de> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <clm@fb.com>
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Valentina Giusti authored
Remove unused variables: * tree from end_bio_extent_writepage, * item from extent_fiemap. Signed-off-by: Valentina Giusti <valentina.giusti@microon.de> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <clm@fb.com>
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Valentina Giusti authored
The variable found_uncached_bg in find_free_extent is not used since commit 285ff5af (Btrfs: remove the ideal caching code) Signed-off-by: Valentina Giusti <valentina.giusti@microon.de> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <clm@fb.com>
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Valentina Giusti authored
Remove unused variables: * tree from csum_dirty_buffer, * tree from btree_readpage_end_io_hook, * tree from btree_writepages, * bytenr from btrfs_create_tree, * fs_info from end_workqueue_fn. Signed-off-by: Valentina Giusti <valentina.giusti@microon.de> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <clm@fb.com>
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Valentina Giusti authored
Variable owner in btrfs_new_inode is unused since commit d82a6f1d (Btrfs: kill BTRFS_I(inode)->block_group) Signed-off-by: Valentina Giusti <valentina.giusti@microon.de> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <clm@fb.com>
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Jeff Mahoney authored
This adds a writeable attribute which describes the label. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <clm@fb.com>
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Jeff Mahoney authored
Now that we have the infrastructure for per-super attributes, we can publish device membership in /sys/fs/btrfs/<fsid>/devices. The information is published as symlinks to the block devices. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <clm@fb.com>
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Jeff Mahoney authored
While trying to debug ENOSPC issues, it's helpful to understand what the kernel's view of the available space is. We export this information via ioctl, but sysfs files are more easily used. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <clm@fb.com>
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Jeff Mahoney authored
btrfs filesystem df output will show the size of the metadata space and how much of it is used, and the user assumes that the difference is all usable space. Since that's not actually the case due to the global metadata reservation, we should provide the full picture to the user. This patch adds an ioctl that exports the size of the global metadata reservation so that btrfs filesystem df can report it. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <clm@fb.com>
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Jeff Mahoney authored
Now that we have the feature name strings available in the kernel via the sysfs attributes, we can use them for printing better failure messages from the ioctl path. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <clm@fb.com>
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Jeff Mahoney authored
This patch adds the ability to change (set/clear) features while the file system is mounted. A bitmask is added for each feature set for the support to set and clear the bits. A message indicating which bit has been set or cleared is issued when it's been changed and also when permission or support for a particular bit has been denied. Since the the attributes can now be writable, we need to introduce another struct attribute to hold the different permissions. If neither set or clear is supported, the file will have 0444 permissions. If either set or clear is supported, the file will have 0644 permissions and the store handler will filter out the write based on the bitmask. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <clm@fb.com>
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Jeff Mahoney authored
With the compat and compat-ro bits, it's possible for file systems to exist that have features that aren't supported by the kernel's file system implementation yet still be mountable. This patch publishes read-only info on those features using a prefix:number format, where the number is the bit number rather than the shifted value. e.g. "compat:12" Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <clm@fb.com>
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Jeff Mahoney authored
This patch publishes information on which features are enabled in the file system on a per-super basis. At this point, it only publishes information on features supported by the file system implementation. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <clm@fb.com>
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Jeff Mahoney authored
This patch adds per-super attributes to sysfs. It doesn't publish any attributes yet, but does the proper lifetime handling as well as the basic infrastructure to add new attributes. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <clm@fb.com>
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Jeff Mahoney authored
This patch adds the ability to publish supported features to sysfs under /sys/fs/btrfs/features. The files are module-wide and export which features the kernel supports. The content, for now, is just "0\n". Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <clm@fb.com>
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Jeff Mahoney authored
struct kobj_attribute implements the baseline attribute functionality that can be used all over the place. We should export the ops associated with it. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <clm@fb.com>
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Jeff Mahoney authored
There are some feature bits that require no offline setup and can be enabled online. I've only reviewed extended irefs, but there will probably be more. We introduce three new ioctls: - BTRFS_IOC_GET_SUPPORTED_FEATURES: query the kernel for supported features. - BTRFS_IOC_GET_FEATURES: query the kernel for enabled features on a per-fs basis, as well as querying for which features are changeable with mounted. - BTRFS_IOC_SET_FEATURES: change features on a per-fs basis. We introduce two new masks per feature set (_SAFE_SET and _SAFE_CLEAR) that allow us to define which features are safe to change at runtime. The failure modes for BTRFS_IOC_SET_FEATURES are as follows: - Enabling a completely unsupported feature: warns and returns -ENOTSUPP - Enabling a feature that can only be done offline: warns and returns -EPERM Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <clm@fb.com>
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Liu Bo authored
When we have data deduplication on, we'll hang on the merge part because it needs to verify every queued delayed data refs related to this disk offset but we may have millions refs. And in the case of delayed data refs, we don't usually have too much data refs to merge. So it's safe to shut it down for data refs. Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <clm@fb.com>
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Liu Bo authored
The way how we process delayed refs is 1) get a bunch of head refs, 2) pick up one head ref, 3) go one node back for any delayed ref updates. The head ref is also linked in the same rbtree as the delayed ref is, so in 1) stage, we have to walk one by one including not only head refs, but delayed refs. When we have a great number of delayed refs pending to process, this'll cost time a lot. Here we introduce a head ref specific rbtree, it only has head refs, so troubles go away. Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <clm@fb.com>
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Josef Bacik authored
We were looking at file_extent_num_bytes unconditionally when looking at referenced data bytes, but this isn't correct for compression. Fix this by checking the compression of the file extent we are and setting num_bytes to disk_num_bytes in the case of compression so that we are marking the proper bytes as referenced. This fixes check_int_data freaking out when running btrfs/004. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <clm@fb.com>
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Josef Bacik authored
Btrfs has always had these filler extent data items for holes in inodes. This has made somethings very easy, like logging hole punches and sending hole punches. However for large holey files these extent data items are pure overhead. So add an incompatible feature to no longer add hole extents to reduce the amount of metadata used by these sort of files. This has a few changes for logging and send obviously since they will need to detect holes and log/send the holes if there are any. I've tested this thoroughly with xfstests and it doesn't cause any issues with and without the incompat format set. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <clm@fb.com>
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- 20 Jan, 2014 3 commits
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Linus Torvalds authored
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Ilia Mirkin authored
Since commit 61b365a5 ("drm/nouveau: populate master subdev pointer only when fully constructed"), the nouveau_mxm(bios) call will return NULL, since it's still being called from the constructor. Instead, pass the mxm pointer via the unused data field. See https://bugs.freedesktop.org/show_bug.cgi?id=73791Reported-by: Andreas Reis <andreas.reis@gmail.com> Tested-by: Andreas Reis <andreas.reis@gmail.com> Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu> Cc: Ben Skeggs <bskeggs@redhat.com> Cc: Dave Airlie <airlied@linux.ie> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull last-minute ACPI fix from Rafael Wysocki: "This reverts a commit that causes the Alan Cox' ASUS T100TA to "crash and burn" during boot if the Baytrail pinctrl driver is compiled in" * tag 'acpi-3.13-fixup' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: Revert "ACPI: Add BayTrail SoC GPIO and LPSS ACPI IDs"
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- 19 Jan, 2014 1 commit
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf fixes from Ingo Molnar: - an s2ram related fix on AMD systems - a perf fault handling bug that is relatively old but which has become much easier to trigger in v3.13 after commit e00b12e6 ("perf/x86: Further optimize copy_from_user_nmi()") * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/x86/amd/ibs: Fix waking up from S3 for AMD family 10h x86, mm, perf: Allow recursive faults from interrupts
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- 18 Jan, 2014 9 commits
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Rafael J. Wysocki authored
This reverts commit f6308b36 (ACPI: Add BayTrail SoC GPIO and LPSS ACPI IDs), because it causes the Alan Cox' ASUS T100TA to "crash and burn" during boot if the Baytrail pinctrl driver is compiled in. Fixes: f6308b36 (ACPI: Add BayTrail SoC GPIO and LPSS ACPI IDs) Reported-by: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk> Requested-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds authored
Pull networking fixes from David Miller: 1) The value choosen for the new SO_MAX_PACING_RATE socket option on parisc was very poorly choosen, let's fix it while we still can. From Eric Dumazet. 2) Our generic reciprocal divide was found to handle some edge cases incorrectly, part of this is encoded into the BPF as deep as the JIT engines themselves. Just use a real divide throughout for now. From Eric Dumazet. 3) Because the initial lookup is lockless, the TCP metrics engine can end up creating two entries for the same lookup key. Fix this by doing a second lookup under the lock before we actually create the new entry. From Christoph Paasch. 4) Fix scatter-gather list init in usbnet driver, from Bjørn Mork. 5) Fix unintended 32-bit truncation in cxgb4 driver's bit shifting. From Dan Carpenter. 6) Netlink socket dumping uses the wrong socket state for timewait sockets. Fix from Neal Cardwell. 7) Fix netlink memory leak in ieee802154_add_iface(), from Christian Engelmayer. 8) Multicast forwarding in ipv4 can overflow the per-rule reference counts, causing all multicast traffic to cease. Fix from Hannes Frederic Sowa. 9) via-rhine needs to stop all TX queues when it resets the device, from Richard Weinberger. 10) Fix RDS per-cpu accesses broken by the this_cpu_* conversions. From Gerald Schaefer. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: s390/bpf,jit: fix 32 bit divisions, use unsigned divide instructions parisc: fix SO_MAX_PACING_RATE typo ipv6: simplify detection of first operational link-local address on interface tcp: metrics: Avoid duplicate entries with the same destination-IP net: rds: fix per-cpu helper usage e1000e: Fix compilation warning when !CONFIG_PM_SLEEP bpf: do not use reciprocal divide be2net: add dma_mapping_error() check for dma_map_page() bnx2x: Don't release PCI bars on shutdown net,via-rhine: Fix tx_timeout handling batman-adv: fix batman-adv header overhead calculation qlge: Fix vlan netdev features. net: avoid reference counter overflows on fib_rules in multicast forwarding dm9601: add USB IDs for new dm96xx variants MAINTAINERS: add virtio-dev ML for virtio ieee802154: Fix memory leak in ieee802154_add_iface() net: usbnet: fix SG initialisation inet_diag: fix inet_diag_dump_icsk() to use correct state for timewait sockets cxgb4: silence shift wrapping static checker warning
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Heiko Carstens authored
The s390 bpf jit compiler emits the signed divide instructions "dr" and "d" for unsigned divisions. This can cause problems: the dividend will be zero extended to a 64 bit value and the divisor is the 32 bit signed value as specified A or X accumulator, even though A and X are supposed to be treated as unsigned values. The divide instrunctions will generate an exception if the result cannot be expressed with a 32 bit signed value. This is the case if e.g. the dividend is 0xffffffff and the divisor either 1 or also 0xffffffff (signed: -1). To avoid all these issues simply use unsigned divide instructions. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Eric Dumazet authored
SO_MAX_PACING_RATE definition on parisc got a typo. Its not too late to fix it, before 3.13 is official. Fixes: 62748f32 ("net: introduce SO_MAX_PACING_RATE") Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Hannes Frederic Sowa authored
In commit 1ec047eb ("ipv6: introduce per-interface counter for dad-completed ipv6 addresses") I build the detection of the first operational link-local address much to complex. Additionally this code now has a race condition. Replace it with a much simpler variant, which just scans the address list when duplicate address detection completes, to check if this is the first valid link local address and send RS and MLD reports then. Fixes: 1ec047eb ("ipv6: introduce per-interface counter for dad-completed ipv6 addresses") Reported-by: Jiri Pirko <jiri@resnulli.us> Cc: Flavio Leitner <fbl@redhat.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Acked-by: Flavio Leitner <fbl@redhat.com> Acked-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
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Christoph Paasch authored
Because the tcp-metrics is an RCU-list, it may be that two soft-interrupts are inside __tcp_get_metrics() for the same destination-IP at the same time. If this destination-IP is not yet part of the tcp-metrics, both soft-interrupts will end up in tcpm_new and create a new entry for this IP. So, we will have two tcp-metrics with the same destination-IP in the list. This patch checks twice __tcp_get_metrics(). First without holding the lock, then while holding the lock. The second one is there to confirm that the entry has not been added by another soft-irq while waiting for the spin-lock. Fixes: 51c5d0c4 (tcp: Maintain dynamic metrics in local cache.) Signed-off-by: Christoph Paasch <christoph.paasch@uclouvain.be> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Gerald Schaefer authored
commit ae4b46e9 "net: rds: use this_cpu_* per-cpu helper" broke per-cpu handling for rds. chpfirst is the result of __this_cpu_read(), so it is an absolute pointer and not __percpu. Therefore, __this_cpu_write() should not operate on chpfirst, but rather on cache->percpu->first, just like __this_cpu_read() did before. Cc: <stable@vger.kernel.org> # 3.8+ Signed-off-byd Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespaceLinus Torvalds authored
Pull namespace fixes from Eric Biederman: "This is a set of 3 regression fixes. This fixes /proc/mounts when using "ip netns add <netns>" to display the actual mount point. This fixes a regression in clone that broke lxc-attach. This fixes a regression in the permission checks for mounting /proc that made proc unmountable if binfmt_misc was in use. Oops. My apologies for sending this pull request so late. Al Viro gave interesting review comments about the d_path fix that I wanted to address in detail before I sent this pull request. Unfortunately a bad round of colds kept from addressing that in detail until today. The executive summary of the review was: Al: Is patching d_path really sufficient? The prepend_path, d_path, d_absolute_path, and __d_path family of functions is a really mess. Me: Yes, patching d_path is really sufficient. Yes, the code is mess. No it is not appropriate to rewrite all of d_path for a regression that has existed for entirely too long already, when a two line change will do" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: vfs: Fix a regression in mounting proc fork: Allow CLONE_PARENT after setns(CLONE_NEWPID) vfs: In d_path don't call d_dname on a mount point
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git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds authored
Pull KVM fix from Paolo Bonzini: "Fix for a brown paper bag bug. Thanks to Drew Jones for noticing" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: kvm: x86: fix apic_base enable check
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- 17 Jan, 2014 3 commits
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git://git.open-mesh.org/linux-mergeDavid S. Miller authored
Included change: - properly compute the batman-adv header overhead. Such result is later used to initialize the hard_header_len member of the soft-interface netdev object Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linuxLinus Torvalds authored
Pull arm64 fix from Catalin Marinas: "Revert "arm64: Fix memory shareability attribute for ioremap_wc/cache" We noticed that it breaks ioremap (and earlyprintk) with 64K page configuration" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: Revert "arm64: Fix memory shareability attribute for ioremap_wc/cache"
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Hugh Dickins authored
Commit 74e72f89 ("lib/percpu_counter.c: fix __percpu_counter_add()") looked very plausible, but its arithmetic was badly wrong: obvious once you see the fix, but maddening to get there from the weird tmpfs ENOSPCs Signed-off-by: Hugh Dickins <hughd@google.com> Cc: Ming Lei <tom.leiming@gmail.com> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Shaohua Li <shli@fusionio.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Fan Du <fan.du@windriver.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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- 16 Jan, 2014 2 commits
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Mika Westerberg authored
Commit 7509963c (e1000e: Fix a compile flag mis-match for suspend/resume) moved suspend and resume hooks to be available when CONFIG_PM is set. However, it can be set even if CONFIG_PM_SLEEP is not set causing following warnings to be emitted: drivers/net/ethernet/intel/e1000e/netdev.c:6178:12: warning: ‘e1000_suspend’ defined but not used [-Wunused-function] drivers/net/ethernet/intel/e1000e/netdev.c:6185:12: warning: ‘e1000_resume’ defined but not used [-Wunused-function] To fix this make the hooks to be available only when CONFIG_PM_SLEEP is set and remove CONFIG_PM wrapping from driver ops because this is already handled by SET_SYSTEM_SLEEP_PM_OPS() and SET_RUNTIME_PM_OPS(). Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Cc: Dave Ertman <davidx.m.ertman@intel.com> Cc: Aaron Brown <aaron.f.brown@intel.com> Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Catalin Marinas authored
This reverts commit 2f7dc602. The above commit breaks the mapping type for Device memory because pgprot_default already contains a Normal memory type. pgprot_default is also not initialised early enough for earlyprintk resulting in an inconsistent memory mapping with 64K PAGE_SIZE configuration. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Reported-by: Will Deacon <will.deacon@arm.com> Acked-by: Will Deacon <will.deacon@arm.com>
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