summaryrefslogtreecommitdiff
AgeCommit message (Collapse)AuthorFilesLines
2013-09-06ceph: clean PgPrivate2 on returning from readpagesMilosz Tanski2-0/+9
In some cases the ceph readapages code code bails without filling all the pages already marked by fscache. When we return back to readahead code this causes a BUG. Signed-off-by: Milosz Tanski <milosz@adfin.com>
2013-09-06ceph: use fscache as a local presisent cacheMilosz Tanski10-13/+666
Adding support for fscache to the Ceph filesystem. This would bring it to on par with some of the other network filesystems in Linux (like NFS, AFS, etc...) In order to mount the filesystem with fscache the 'fsc' mount option must be passed. Signed-off-by: Milosz Tanski <milosz@adfin.com> Signed-off-by: Sage Weil <sage@inktank.com>
2013-09-06Merge tag 'fscache-fixes-for-ceph' into wip-fscacheMilosz Tanski362-1514/+3282
Patches for Ceph FS-Cache support
2013-09-06Merge branch 'for-linus' of ↵Linus Torvalds106-204/+269
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial tree from Jiri Kosina: "The usual trivial updates all over the tree -- mostly typo fixes and documentation updates" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (52 commits) doc: Documentation/cputopology.txt fix typo treewide: Convert retrun typos to return Fix comment typo for init_cma_reserved_pageblock Documentation/trace: Correcting and extending tracepoint documentation mm/hotplug: fix a typo in Documentation/memory-hotplug.txt power: Documentation: Update s2ram link doc: fix a typo in Documentation/00-INDEX Documentation/printk-formats.txt: No casts needed for u64/s64 doc: Fix typo "is is" in Documentations treewide: Fix printks with 0x%# zram: doc fixes Documentation/kmemcheck: update kmemcheck documentation doc: documentation/hwspinlock.txt fix typo PM / Hibernate: add section for resume options doc: filesystems : Fix typo in Documentations/filesystems scsi/megaraid fixed several typos in comments ppc: init_32: Fix error typo "CONFIG_START_KERNEL" treewide: Add __GFP_NOWARN to k.alloc calls with v.alloc fallbacks page_isolation: Fix a comment typo in test_pages_isolated() doc: fix a typo about irq affinity ...
2013-09-06Merge branch 'for-linus' of ↵Linus Torvalds54-492/+1351
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid Pull HID updates from Jiri Kosina: "Highlights: - conversion of HID subsystem to use devm-based resource management, from Benjamin Tissoires - i2c-hid support for DT bindings, from Benjamin Tissoires - much improved support for Win8-multitouch devices, from Benjamin Tissoires - cleanup of core code using common hidinput_input_event(), from David Herrmann - fix for bug in implement() access to the bit stream (causing oops) that has been present in the code for ages, but devices that are able to trigger it have started to appear only now, from Jiri Kosina - fixes for CVE-2013-2899, CVE-2013-2898, CVE-2013-2896, CVE-2013-2892, CVE-2013-2888 (all triggerable only by specially crafted malicious HW devices plugged into the system), from Kees Cook - hidraw oops fix, from Manoj Chourasia - various smaller fixes here and there, support for a bunch of new devices by various contributors" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: (53 commits) HID: MAINTAINERS: add roccat drivers HID: hid-sensor-hub: change kmalloc + memcpy by kmemdup HID: hid-sensor-hub: move to devm_kzalloc HID: hid-sensor-hub: fix indentation accross the code HID: move HID_REPORT_TYPES closer to the report-definitions HID: check for NULL field when setting values HID: picolcd_core: validate output report details HID: sensor-hub: validate feature report details HID: ntrig: validate feature report details HID: pantherlord: validate output report details HID: hid-wiimote: print small buffers via %*phC HID: uhid: improve uhid example client HID: Correct the USB IDs for the new Macbook Air 6 HID: wiimote: add support for Guitar-Hero guitars HID: wiimote: add support for Guitar-Hero drums Input: introduce BTN/ABS bits for drums and guitars HID: battery: don't do DMA from stack HID: roccat: add support for KonePureOptical v2 HID: picolcd: Prevent NULL pointer dereference on _remove() HID: usbhid: quirk for N-Trig DuoSense Touch Screen ...
2013-09-06Merge branch 'for_linus' of ↵Linus Torvalds22-445/+609
git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs Pull ext3, reiserfs, udf & isofs fixes from Jan Kara: "The contains a bunch of ext3 cleanups and minor improvements, major reiserfs locking changes which should hopefully fix deadlocks introduced by BKL removal, and udf/isofs changes to refuse mounting fs rw instead of mounting it ro automatically which makes eject button work as expected for all media (see the changelog for why userspace should be ok with this change)" * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: jbd: use a single printk for jbd_debug() reiserfs: locking, release lock around quota operations reiserfs: locking, handle nested locks properly reiserfs: locking, push write lock out of xattr code jbd: relocate assert after state lock in journal_commit_transaction() udf: Refuse RW mount of the filesystem instead of making it RO udf: Standardize return values in mount sequence isofs: Refuse RW mount of the filesystem instead of making it RO ext3: allow specifying external journal by pathname mount option jbd: remove unneeded semicolon
2013-09-06Merge tag 'for-f2fs-3.12' of ↵Linus Torvalds21-344/+890
git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs Pull f2fs updates from Jaegeuk Kim: "This patch-set includes the following major enhancement patches: - support inline xattrs - add sysfs support to control GCs explicitly - add proc entry to show the current segment usage information - improve the GC/SSR performance The other bug fixes are as follows: - avoid the overflow on status calculation - fix some error handling routines - fix inconsistent xattr states after power-off-recovery - fix incorrect xattr node offset definition - fix deadlock condition in fsync - fix the fdatasync routine for power-off-recovery" * tag 'for-f2fs-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (40 commits) f2fs: optimize gc for better performance f2fs: merge more bios of node block writes f2fs: avoid an overflow during utilization calculation f2fs: trigger GC when there are prefree segments f2fs: use strncasecmp() simplify the string comparison f2fs: fix omitting to update inode page f2fs: support the inline xattrs f2fs: add the truncate_xattr_node function f2fs: introduce __find_xattr for readability f2fs: reserve the xattr space dynamically f2fs: add flags for inline xattrs f2fs: fix error return code in init_f2fs_fs() f2fs: fix wrong BUG_ON condition f2fs: fix memory leak when init f2fs filesystem fail f2fs: fix a compound statement label error f2fs: avoid writing inode redundantly when creating a file f2fs: alloc_page() doesn't return an ERR_PTR f2fs: should cover i_xattr_nid with its xattr node page lock f2fs: check the free space first in new_node_page f2fs: clean up the needless end 'return' of void function ...
2013-09-06NFS: Don't check lock owner compatability unless file is locked (part 2)Trond Myklebust1-6/+16
When coalescing requests into a single READ or WRITE RPC call, and there is no file locking involved, we don't have to refuse coalescing for requests where the lock owner information doesn't match. Reported-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2013-09-06hwmon: (emc6w201) Do not declare enum variableGuenter Roeck1-1/+1
Fix the following smatch warning: emc6w201.c:52:26: warning: symbol 'subfeature' was not declared. Should it be static? 'enum { } subtype' declares an enum as (global) variable which we don't want. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2013-09-06hwmon: (w83792d) Update module authorShane Huang3-5/+4
w83792d was written by me in 2004, I'd like to update my first name into my current one to keep consistent, and delete invalid address. Signed-off-by: Shane Huang <shane.huang@amd.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2013-09-06Merge branch 'for-3.12/sensor-hub' into for-linusJiri Kosina1-32/+23
Conflicts: drivers/hid/hid-sensor-hub.c
2013-09-06Merge branches 'for-3.12/devm', 'for-3.12/i2c-hid', 'for-3.12/i2c-hid-dt', ↵Jiri Kosina54-459/+1326
'for-3.12/logitech', 'for-3.12/multitouch-win8', 'for-3.12/trasnport-driver-cleanup', 'for-3.12/uhid', 'for-3.12/upstream' and 'for-3.12/wiimote' into for-linus
2013-09-06fscache: Netfs function for cleanup post readpagesMilosz Tanski3-1/+55
Currently the fscache code expect the netfs to call fscache_readpages_or_alloc inside the aops readpages callback. It marks all the pages in the list provided by readahead with PG_private_2. In the cases that the netfs fails to read all the pages (which is legal) it ends up returning to the readahead and triggering a BUG. This happens because the page list still contains marked pages. This patch implements a simple fscache_readpages_cancel function that the netfs should call before returning from readpages. It will revoke the pages from the underlying cache backend and unmark them. The problem was originally worked out in the Ceph devel tree, but it also occurs in CIFS. It appears that NFS, AFS and 9P are okay as read_cache_pages() will clean up the unprocessed pages in the case of an error. This can be used to address the following oops: [12410647.597278] BUG: Bad page state in process petabucket pfn:3d504e [12410647.597292] page:ffffea000f541380 count:0 mapcount:0 mapping: (null) index:0x0 [12410647.597298] page flags: 0x200000000001000(private_2) ... [12410647.597334] Call Trace: [12410647.597345] [<ffffffff815523f2>] dump_stack+0x19/0x1b [12410647.597356] [<ffffffff8111def7>] bad_page+0xc7/0x120 [12410647.597359] [<ffffffff8111e49e>] free_pages_prepare+0x10e/0x120 [12410647.597361] [<ffffffff8111fc80>] free_hot_cold_page+0x40/0x170 [12410647.597363] [<ffffffff81123507>] __put_single_page+0x27/0x30 [12410647.597365] [<ffffffff81123df5>] put_page+0x25/0x40 [12410647.597376] [<ffffffffa02bdcf9>] ceph_readpages+0x2e9/0x6e0 [ceph] [12410647.597379] [<ffffffff81122a8f>] __do_page_cache_readahead+0x1af/0x260 [12410647.597382] [<ffffffff81122ea1>] ra_submit+0x21/0x30 [12410647.597384] [<ffffffff81118f64>] filemap_fault+0x254/0x490 [12410647.597387] [<ffffffff8113a74f>] __do_fault+0x6f/0x4e0 [12410647.597391] [<ffffffff810125bd>] ? __switch_to+0x16d/0x4a0 [12410647.597395] [<ffffffff810865ba>] ? finish_task_switch+0x5a/0xc0 [12410647.597398] [<ffffffff8113d856>] handle_pte_fault+0xf6/0x930 [12410647.597401] [<ffffffff81008c33>] ? pte_mfn_to_pfn+0x93/0x110 [12410647.597403] [<ffffffff81008cce>] ? xen_pmd_val+0xe/0x10 [12410647.597405] [<ffffffff81005469>] ? __raw_callee_save_xen_pmd_val+0x11/0x1e [12410647.597407] [<ffffffff8113f361>] handle_mm_fault+0x251/0x370 [12410647.597411] [<ffffffff812b0ac4>] ? call_rwsem_down_read_failed+0x14/0x30 [12410647.597414] [<ffffffff8155bffa>] __do_page_fault+0x1aa/0x550 [12410647.597418] [<ffffffff8108011d>] ? up_write+0x1d/0x20 [12410647.597422] [<ffffffff8113141c>] ? vm_mmap_pgoff+0xbc/0xe0 [12410647.597425] [<ffffffff81143bb8>] ? SyS_mmap_pgoff+0xd8/0x240 [12410647.597427] [<ffffffff8155c3ae>] do_page_fault+0xe/0x10 [12410647.597431] [<ffffffff81558818>] page_fault+0x28/0x30 Signed-off-by: Milosz Tanski <milosz@adfin.com> Signed-off-by: David Howells <dhowells@redhat.com>
2013-09-06FS-Cache: Fix heading in documentationDavid Howells1-1/+1
Fix a heading in the documentation to make it consistent with the contents list. Signed-off-by: David Howells <dhowells@redhat.com>
2013-09-06CacheFiles: Implement interface to check cache consistencyDavid Howells3-0/+63
Implement the FS-Cache interface to check the consistency of a cache object in CacheFiles. Original-author: Hongyi Jia <jiayisuse@gmail.com> Signed-off-by: David Howells <dhowells@redhat.com> cc: Hongyi Jia <jiayisuse@gmail.com> cc: Milosz Tanski <milosz@adfin.com>
2013-09-06FS-Cache: Add interface to check consistency of a cached objectDavid Howells7-28/+154
Extend the fscache netfs API so that the netfs can ask as to whether a cache object is up to date with respect to its corresponding netfs object: int fscache_check_consistency(struct fscache_cookie *cookie) This will call back to the netfs to check whether the auxiliary data associated with a cookie is correct. It returns 0 if it is and -ESTALE if it isn't; it may also return -ENOMEM and -ERESTARTSYS. The backends now have to implement a mandatory operation pointer: int (*check_consistency)(struct fscache_object *object) that corresponds to the above API call. FS-Cache takes care of pinning the object and the cookie in memory and managing this call with respect to the object state. Original-author: Hongyi Jia <jiayisuse@gmail.com> Signed-off-by: David Howells <dhowells@redhat.com> cc: Hongyi Jia <jiayisuse@gmail.com> cc: Milosz Tanski <milosz@adfin.com>
2013-09-06Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-armLinus Torvalds103-1343/+1590
Pull ARM updates from Russell King: "This set includes adding support for Neon acceleration of RAID6 XOR code from Ard Biesheuvel, cache flushing and barrier updates from Will Deacon, and a cleanup to the ARM debug code which reduces the amount of code by about 500 lines. A few other cleanups, such as constifying the machine descriptors which already shouldn't be written to, cleaning up the printing of the L2 cache size" * 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: (55 commits) ARM: 7826/1: debug: support debug ll on hisilicon soc ARM: 7830/1: delay: don't bother reporting bogomips in /proc/cpuinfo ARM: 7829/1: Add ".text.unlikely" and ".text.hot" to arm unwind tables ARM: 7828/1: ARMv7-M: implement restart routine common to all v7-M machines ARM: 7827/1: highbank: fix debug uart virtual address for LPAE ARM: 7823/1: errata: workaround Cortex-A15 erratum 773022 ARM: 7806/1: allow DEBUG_UNCOMPRESS for Tegra ARM: 7793/1: debug: use generic option for ep93xx PL10x debug port ARM: debug: move SPEAr debug to generic PL01x code ARM: debug: move davinci debug to generic 8250 code ARM: debug: move keystone debug to generic 8250 code ARM: debug: remove DEBUG_ROCKCHIP_UART ARM: debug: provide generic option choices for 8250 and PL01x ports ARM: debug: move PL01X debug include into arch/arm/include/debug/ ARM: debug: provide PL01x debug uart phys/virt address configuration options ARM: debug: add support for word accesses to debug/8250.S ARM: debug: move 8250 debug include into arch/arm/include/debug/ ARM: debug: provide 8250 debug uart phys/virt address configuration options ARM: debug: provide 8250 debug uart register shift configuration option ARM: debug: provide 8250 debug uart flow control configuration option ...
2013-09-06net: stmmac: fix bad merge conflict resolutionOlof Johansson1-0/+1
Merge commit 06c54055bebf did a bad conflict resolution accidentally leaving out a closing brace. Add it back. This breaks a handful of defconfigs on ARM, so it'd be good to see it applied pretty quickly. Signed-off-by: Olof Johansson <olof@lixom.net> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-06lguest: fix GPF in guest when using gdb.Rusty Russell1-0/+7
Since the Guest is in ring 1, it can't read the debug registers: doing so gives a number of nasty messages: (gdb) run Starting program: /bin/sleep [ 31.170230] general protection fault: 0000 [#1] SMP [ 31.170230] Modules linked in: [ 31.170230] CPU: 0 PID: 2678 Comm: sleep Not tainted 3.11.0+ #64 [ 31.170230] task: cc5c09b0 ti: cc79c000 task.ti: cc79c000 [ 31.170230] EIP: 0061:[<c01333d8>] EFLAGS: 00000097 CPU: 0 [ 31.170230] EIP is at native_get_debugreg+0x58/0x70 [ 31.170230] EAX: 00000006 EBX: cc79dfb4 ECX: b7fff918 EDX: 00000000 [ 31.170230] ESI: cc5c09b0 EDI: 00000000 EBP: cc79df84 ESP: cc79df84 [ 31.170230] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0069 [ 31.170230] CR0: 00000008 CR2: 081ba69a CR3: 0e2f2000 CR4: 00000000 Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2013-09-06lguest: fix guest kernel stack overflow when TF bit set.Rusty Russell1-0/+10
The symptoms are that running gdb on a binary causes the guest to overflow the kernels stack (after some period of time), resulting in it finally being killed with a "Bad address" message. Reported-by: Sakari Ailus <sakari.ailus@iki.fi> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2013-09-06lguest: fix BUG_ON() in invalid guest page table.Rusty Russell1-1/+3
If we discover the entry is invalid, we kill the guest, but we must avoid calling gpte_addr() on the invalid pmd, otherwise: kernel BUG at drivers/lguest/page_tables.c:157! Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2013-09-06vfio: fix documentationZi Shen Lim1-4/+4
Signed-off-by: Zi Shen Lim <zishen.lim@linaro.org> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2013-09-06Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ideLinus Torvalds7-11/+13
Pull IDE changes from David Miller: "Mostly cleanups, and changes part of tree-wide adjustments, this code is in deep freeze so that's pretty much what we expect these days" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide: ide: sgiioc4: Staticize ioc4_ide_attach_one() ide: palm_bk3710: add missing __iomem annotation ide: use dev_get_platdata() ide-disk_proc: use macro to replace magic number ide: replace strict_strtol() with kstrtol()
2013-09-06Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparcLinus Torvalds13-35/+49
Pull sparc changes from David Miller: "Several bug fixes (from Kirill Tkhai, Geery Uytterhoeven, and Alexey Dobriyan) and some support for Fujitsu sparc64x chips (from Allen Pais)" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc: sparc64: Export flush_ptrace_access() (needed by lustre) sparc: fix PCI device proc file mmap(2) sparc64: Remove RWSEM export leftovers sparc64: Fix off by one in trampoline TLB mapping installation loop. sparc64: Fix ITLB handler of null page esp_scsi: Fix tag state corruption when autosensing. sparc64: Fix not SRA'ed %o5 in 32-bit traced syscall sparc64: cleanup: Rename ret_from_syscall to ret_from_fork sparc32: Fix exit flag passed from traced sys_sigreturn sparc64: Fix wrong syscall return value passed to trace_sys_exit() support sparc64x chip type in cpumap.c cpu hw caps support for sparc64x
2013-09-06NFS: Don't check lock owner compatibility in writes unless file is lockedTrond Myklebust1-1/+1
If we're doing buffered writes, and there is no file locking involved, then we don't have to worry about whether or not the lock owner information is identical. By relaxing this check, we ensure that fork()ed child processes can write to a page without having to first sync dirty data that was written by the parent to disk. Reported-by: Quentin Barnes <qbarnes@gmail.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Tested-by: Quentin Barnes <qbarnes@gmail.com>
2013-09-06Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds974-23917/+56727
Pull networking changes from David Miller: "Noteworthy changes this time around: 1) Multicast rejoin support for team driver, from Jiri Pirko. 2) Centralize and simplify TCP RTT measurement handling in order to reduce the impact of bad RTO seeding from SYN/ACKs. Also, when both timestamps and local RTT measurements are available prefer the later because there are broken middleware devices which scramble the timestamp. From Yuchung Cheng. 3) Add TCP_NOTSENT_LOWAT socket option to limit the amount of kernel memory consumed to queue up unsend user data. From Eric Dumazet. 4) Add a "physical port ID" abstraction for network devices, from Jiri Pirko. 5) Add a "suppress" operation to influence fib_rules lookups, from Stefan Tomanek. 6) Add a networking development FAQ, from Paul Gortmaker. 7) Extend the information provided by tcp_probe and add ipv6 support, from Daniel Borkmann. 8) Use RCU locking more extensively in openvswitch data paths, from Pravin B Shelar. 9) Add SCTP support to openvswitch, from Joe Stringer. 10) Add EF10 chip support to SFC driver, from Ben Hutchings. 11) Add new SYNPROXY netfilter target, from Patrick McHardy. 12) Compute a rate approximation for sending in TCP sockets, and use this to more intelligently coalesce TSO frames. Furthermore, add a new packet scheduler which takes advantage of this estimate when available. From Eric Dumazet. 13) Allow AF_PACKET fanouts with random selection, from Daniel Borkmann. 14) Add ipv6 support to vxlan driver, from Cong Wang" Resolved conflicts as per discussion. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1218 commits) openvswitch: Fix alignment of struct sw_flow_key. netfilter: Fix build errors with xt_socket.c tcp: Add missing braces to do_tcp_setsockopt caif: Add missing braces to multiline if in cfctrl_linkup_request bnx2x: Add missing braces in bnx2x:bnx2x_link_initialize vxlan: Fix kernel panic on device delete. net: mvneta: implement ->ndo_do_ioctl() to support PHY ioctls net: mvneta: properly disable HW PHY polling and ensure adjust_link() works icplus: Use netif_running to determine device state ethernet/arc/arc_emac: Fix huge delays in large file copies tuntap: orphan frags before trying to set tx timestamp tuntap: purge socket error queue on detach qlcnic: use standard NAPI weights ipv6:introduce function to find route for redirect bnx2x: VF RSS support - VF side bnx2x: VF RSS support - PF side vxlan: Notify drivers for listening UDP port changes net: usbnet: update addr_assign_type if appropriate driver/net: enic: update enic maintainers and driver driver/net: enic: Exposing symbols for Cisco's low latency driver ...
2013-09-06constify dcache.c inlined helpers where possibleAl Viro1-6/+6
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-09-06fuse: drop dentry on failed revalidateAnand Avati1-0/+2
Drop a subtree when we find that it has moved or been delated. This can be done as long as there are no submounts under this location. If the directory was moved and we come across the same directory in a future lookup it will be reconnected by d_materialise_unique(). Signed-off-by: Anand Avati <avati@redhat.com> Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-09-06fuse: clean up return in fuse_dentry_revalidate()Miklos Szeredi1-8/+18
On errors unrelated to the filesystem's state (ENOMEM, ENOTCONN) return the error itself from ->d_revalidate() insted of returning zero (invalid). Also make a common label for invalidating the dentry. This will be used by the next patch. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-09-06fuse: use d_materialise_unique()Miklos Szeredi1-43/+26
Use d_materialise_unique() instead of d_splice_alias(). This allows dentry subtrees to be moved to a new place if there moved, even if something is referencing a dentry in the subtree (open fd, cwd, etc..). This will also allow us to drop a subtree if it is found to be replaced by something else. In this case the disconnected subtree can later be reconnected to its new location. d_materialise_unique() ensures that a directory entry only ever has one alias. We keep fc->inst_mutex around the calls for d_materialise_unique() on directories to prevent a race with mkdir "stealing" the inode. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-09-06sysfs: use check_submounts_and_drop()Miklos Szeredi1-12/+8
Do have_submounts(), shrink_dcache_parent() and d_drop() atomically. check_submounts_and_drop() can deal with negative dentries and non-directories as well. Non-directories can also be mounted on. And just like directories we don't want these to disappear with invalidation. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-09-06nfs: use check_submounts_and_drop()Miklos Szeredi1-5/+4
Do have_submounts(), shrink_dcache_parent() and d_drop() atomically. check_submounts_and_drop() can deal with negative dentries and non-directories as well. Non-directories can also be mounted on. And just like directories we don't want these to disappear with invalidation. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> CC: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-09-06gfs2: use check_submounts_and_drop()Miklos Szeredi1-6/+3
Do have_submounts(), shrink_dcache_parent() and d_drop() atomically. check_submounts_and_drop() can deal with negative dentries and non-directories as well. Non-directories can also be mounted on. And just like directories we don't want these to disappear with invalidation. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> CC: Steven Whitehouse <swhiteho@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-09-06afs: use check_submounts_and_drop()Miklos Szeredi1-7/+3
Do have_submounts(), shrink_dcache_parent() and d_drop() atomically. check_submounts_and_drop() can deal with negative dentries as well. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> CC: David Howells <dhowells@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-09-06vfs: check unlinked ancestors before mountMiklos Szeredi3-6/+39
We check submounts before doing d_drop() on a non-empty directory dentry in NFS (have_submounts()), but we do not exclude a racing mount. Nor do we prevent mounts to be added to the disconnected subtree using relative paths after the d_drop(). This patch fixes these issues by checking for unlinked (unhashed, non-root) ancestors before proceeding with the mount. This is done with rename seqlock taken for write and with ->d_lock grabbed on each ancestor in turn, including our dentry itself. This ensures that the only one of check_submounts_and_drop() or has_unlinked_ancestor() can succeed. Signed-off-by: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-09-06vfs: check submounts and drop atomicallyMiklos Szeredi2-0/+66
We check submounts before doing d_drop() on a non-empty directory dentry in NFS (have_submounts()), but we do not exclude a racing mount. Process A: have_submounts() -> returns false Process B: mount() -> success Process A: d_drop() This patch prepares the ground for the fix by doing the following operations all under the same rename lock: have_submounts() shrink_dcache_parent() d_drop() This is actually an optimization since have_submounts() and shrink_dcache_parent() both traverse the same dentry tree separately. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> CC: David Howells <dhowells@redhat.com> CC: Steven Whitehouse <swhiteho@redhat.com> CC: Trond Myklebust <Trond.Myklebust@netapp.com> CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-09-06vfs: add d_walk()Miklos Szeredi1-161/+148
This one replaces three instances open coded tree walking (have_submounts, select_parent, d_genocide) with a common helper. In addition to slightly reducing the kernel size, this simplifies the callers and makes them less bug prone. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-09-06vfs: restructure d_genocide()Miklos Szeredi1-8/+4
It shouldn't matter when we decrement the refcount during the walk as long as we do it exactly once. Restructure d_genocide() to do the killing on entering the dentry instead of when leaving it. This helps creating a common helper for tree walking. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-09-05openvswitch: Fix alignment of struct sw_flow_key.Jesse Gross2-1/+2
sw_flow_key alignment was declared as " __aligned(__alignof__(long))". However, this breaks on the m68k architecture where long is 32 bit in size but 16 bit aligned by default. This aligns to the size of a long to ensure that we can always do comparsions in full long-sized chunks. It also adds an additional build check to catch any reduction in alignment. CC: Andy Zhou <azhou@nicira.com> Reported-by: Fengguang Wu <fengguang.wu@intel.com> Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Jesse Gross <jesse@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-09-05Merge branch 'timers-urgent-for-linus' of ↵Linus Torvalds1-8/+11
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull cputime fix from Ingo Molnar: "This fixes a longer-standing cputime accounting bug that Stanislaw Gruszka finally managed to track down" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/cputime: Do not scale when utime == 0
2013-09-05Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds2-5/+6
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Ingo Molnar: "Fix for the annoying paravirt.o build warning under allmodconfig, and a MAINTAINERS file update" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86, doc: Add an entry in MAINTAINERS for arch/x86/kernel/cpu/vmware.c x86, paravirt: Remove duplicate definition for DEF_NATIVE
2013-09-05ide: sgiioc4: Staticize ioc4_ide_attach_one()Jingoo Han1-1/+1
ioc4_ide_attach_one() is used only in this file. Fix the following sparse warnings: drivers/ide/sgiioc4.c:603:5: warning: symbol 'ioc4_ide_attach_one' was not declared. Should it be static? Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-09-05ide: palm_bk3710: add missing __iomem annotationJingoo Han1-2/+2
Added missing __iomem annotation in order to fix the following sparse warnings: drivers/ide/palm_bk3710.c:194:31: warning: incorrect type in initializer (different address spaces) drivers/ide/palm_bk3710.c:194:31: expected void [noderef] <asn:2>*base drivers/ide/palm_bk3710.c:194:31: got void *<noident> drivers/ide/palm_bk3710.c:212:31: warning: incorrect type in initializer (different address spaces) drivers/ide/palm_bk3710.c:212:31: expected void [noderef] <asn:2>*base drivers/ide/palm_bk3710.c:212:31: got void *<noident> Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-09-05ide: use dev_get_platdata()Jingoo Han3-4/+4
Use the wrapper function for retrieving the platform data instead of accessing dev->platform_data directly. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-09-05ide-disk_proc: use macro to replace magic numberXinghai Yu1-2/+2
Signed-off-by: Xinghai Yu <yuxinghai@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-09-05ide: replace strict_strtol() with kstrtol()Jingoo Han1-2/+4
The usage of strict_strtol() is not preferred, because strict_strtol() is obsolete. Thus, kstrtol() should be used. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-09-05sparc64: Export flush_ptrace_access() (needed by lustre)Geert Uytterhoeven1-0/+2
ERROR: "flush_ptrace_access" [drivers/staging/lustre/lustre/libcfs/libcfs.ko] undefined! Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-09-05sparc: fix PCI device proc file mmap(2)Alexey Dobriyan1-0/+16
Commit 786d7e1612f0b0adb6046f19b906609e4fe8b1ba "Fix rmmod/read/write races in /proc entries" must have broken mmapping of PCI device proc files on Sparc. Notice how it adds wrapper around ->mmap but doesn't do it around ->get_unmapped_area. Add wrapper around ->get_unmapped_area. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-09-05sparc64: Remove RWSEM export leftoversKirill Tkhai1-9/+0
The functions __down_read __down_read_trylock __down_write __down_write_trylock __up_read __up_write __downgrade_write are implemented inline, so remove corresponding EXPORT_SYMBOLs (They lead to compile errors on RT kernel). Signed-off-by: Kirill Tkhai <tkhai@yandex.ru> CC: David Miller <davem@davemloft.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-09-05Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller143-684/+1483
Conflicts: drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c net/bridge/br_multicast.c net/ipv6/sit.c The conflicts were minor: 1) sit.c changes overlap with change to ip_tunnel_xmit() signature. 2) br_multicast.c had an overlap between computing max_delay using msecs_to_jiffies and turning MLDV2_MRC() into an inline function with a name using lowercase instead of uppercase letters. 3) stmmac had two overlapping changes, one which conditionally allocated and hooked up a dma_cfg based upon the presence of the pbl OF property, and another one handling store-and-forward DMA made. The latter of which should not go into the new of_find_property() basic block. Signed-off-by: David S. Miller <davem@davemloft.net>
generated by cgit v1.2.3 (git 2.39.0) at 2025-09-25 21:20:08 +0300