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2010-10-21Merge branch 'virtio' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus * 'virtio' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: virtio_blk: remove BKL leftovers virtio: console: Disable lseek(2) for port file operations virtio: console: Send SIGIO in case of port unplug virtio: console: Send SIGIO on new data arrival on ports virtio: console: Send SIGIO to processes that request it for host events virtio: console: Reference counting portdev structs is not needed virtio: console: Add reference counting for port struct virtio: console: Use cdev_alloc() instead of cdev_init() virtio: console: Add a find_port_by_devt() function virtio: console: Add a list of portdevs that are active virtio: console: open: Use a common path for error handling virtio: console: remove_port() should return void virtio: console: Make write() return -ENODEV on hot-unplug virtio: console: Make read() return -ENODEV on hot-unplug virtio: console: Unblock poll on port hot-unplug virtio: console: Un-block reads on chardev close virtio: console: Check if portdev is valid in send_control_msg() virtio: console: Remove control vq data only if using multiport support virtio: console: Reset vdev before removing device
2010-10-21Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmwLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw: (22 commits) GFS2: fixed typo GFS2: Fix type mapping for demote_rq interface GFS2 fatal: filesystem consistency error on rename GFS2: Improve journal allocation via sysfs GFS2: Add "norecovery" mount option as a synonym for "spectator" GFS2: Fix spectator umount issue GFS2: Fix compiler warning from previous patch GFS2: reserve more blocks for transactions GFS2: Fix journal check for spectator mounts GFS2: Remove upgrade mount option GFS2: Remove localcaching mount option GFS2: Remove ignore_local_fs mount argument GFS2: Make . and .. qstrs constant GFS2: Use new workqueue scheme GFS2: Update handling of DLM return codes to match reality GFS2: Don't enforce min hold time when two demotes occur in rapid succession GFS2: Fix whitespace in previous patch GFS2: fallocate support GFS2: Add a bug trap in allocation code GFS2: No longer experimental ...
2010-10-21Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (22 commits) ceph: do not carry i_lock for readdir from dcache fs/ceph/xattr.c: Use kmemdup rbd: passing wrong variable to bvec_kunmap_irq() rbd: null vs ERR_PTR ceph: fix num_pages_free accounting in pagelist ceph: add CEPH_MDS_OP_SETDIRLAYOUT and associated ioctl. ceph: don't crash when passed bad mount options ceph: fix debugfs warnings block: rbd: removing unnecessary test block: rbd: fixed may leaks ceph: switch from BKL to lock_flocks() ceph: preallocate flock state without locks held ceph: add pagelist_reserve, pagelist_truncate, pagelist_set_cursor ceph: use mapping->nrpages to determine if mapping is empty ceph: only invalidate on check_caps if we actually have pages ceph: do not hide .snap in root directory rbd: introduce rados block device (rbd), based on libceph ceph: factor out libceph from Ceph file system ceph-rbd: osdc support for osd call and rollback operations ceph: messenger and osdc changes for rbd ...
2010-10-21Merge branch 'for-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/hch/hfsplus * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/hch/hfsplus: (29 commits) hfsplus: fix getxattr return value hfsplus: remove the unused hfsplus_kmap/hfsplus_kunmap helpers hfsplus: create correct initial catalog entries for device files hfsplus: remove superflous rootflags field in hfsplus_inode_info hfsplus: fix link corruption hfsplus: validate btree flags hfsplus: handle more on-disk corruptions without oopsing hfsplus: hfs_bnode_find() can fail, resulting in hfs_bnode_split() breakage hfsplus: fix oops on mount with corrupted btree extent records hfsplus: fix rename over directories hfsplus: convert tree_lock to mutex hfsplus: add missing extent locking in hfsplus_write_inode hfsplus: protect readdir against removals from open_dir_list hfsplus: use atomic bitops for the superblock flags hfsplus: add per-superblock lock for volume header updates hfsplus: remove the rsrc_inodes list hfsplus: do not cache and write next_alloc hfsplus: fix error handling in hfsplus_symlink hfsplus: merge mknod/mkdir/creat hfsplus: clean up hfsplus_write_inode ...
2010-10-21pcmcia: synclink_cs: fix information leak to userlandVasiliy Kulikov
Structure new_line is copied to userland with some padding fields unitialized. It leads to leaking of stack memory. Signed-off-by: Vasiliy Kulikov <segooon@gmail.com> CC: stable@kernel.org Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2010-10-21EDAC, MCE: Fix shift warning on 32-bitBorislav Petkov
Fix drivers/edac/mce_amd.c:262: warning: left shift count >= width of type on 32-bit builds. Reported-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2010-10-21EDAC, MCE: Add a BIT_64() macroBorislav Petkov
Add a macro for 64-bit vectors to use when accessing MSR contents. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2010-10-21EDAC, MCE: Enable MCE decoding on F12hBorislav Petkov
Turn on MCE decoding on F12h. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2010-10-21EDAC, MCE: Add F12h NB MCE decoderBorislav Petkov
F12h is completely covered by the generic path. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2010-10-21EDAC, MCE: Add F12h IC MCE decoderBorislav Petkov
... which is the same as for K8 and F10h. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2010-10-21EDAC, MCE: Add F12h DC MCE decoderBorislav Petkov
F12h DC MCE signatures are a subset of F10h's so reuse them. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2010-10-21EDAC, MCE: Add support for F11h MCEsBorislav Petkov
F11h has almost the same MCE signatures as K8 except DRAM ECC and MC5 bank errors. Reuse functionality from the other families. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2010-10-21EDAC, MCE: Enable MCE decoding on F14hBorislav Petkov
Now that all decoders have been taught about F14h, models < 0x10 MCEs, enable decoding on this family of CPUs. Also, issue a short informational message upon boot that MCE decoding gets enabled. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2010-10-21EDAC, MCE: Fix FR MCEs decodingBorislav Petkov
Those are N/A on K8, so don't decode them there. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2010-10-21EDAC, MCE: Complete NB MCE decodersBorislav Petkov
Add support for decoding F14h BU MCEs and improve decoding of the remaining families. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2010-10-21EDAC, MCE: Warn about LS MCEs on F14hBorislav Petkov
F14h CPUs do not generate LS MCEs so exit early and warn the user in case this path is ever hit that something else might be going haywire. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2010-10-21EDAC, MCE: Adjust IC decoders to F14hBorislav Petkov
Add support for IC MCEs for F14h CPUs. K8 and F10h are almost identical so use one function for both. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2010-10-21EDAC, MCE: Adjust DC decoders to F14hBorislav Petkov
Add a per-family data cache decoders. Since there is a certain overlap between the different DC MCE signatures, reuse functionality between the families as far as possible. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2010-10-21EDAC, MCE: Rename filesBorislav Petkov
Drop "edac_" string from the filenames since they're prefixed with edac/ in their pathname anyway. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2010-10-21EDAC, MCE: Rework MCE injectionBorislav Petkov
Add sysfs injection facilities for testing of the MCE decoding code. Remove large parts of amd64_edac_dbg.c, as a result, which did only NB MCE injection anyway and the new injection code supports that functionality already. Add an injection module so that MCE decoding code in production kernels like those in RHEL and SLES can be tested. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2010-10-21EDAC: Export edac sysfs class to users.Borislav Petkov
Move toplevel sysfs class to the stub and make it available to non-modularized code too. Add proper refcounting of its users and move the registration functionality into the reference counting routines. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2010-10-21EDAC, MCE: Pass complete MCE info to decodersBorislav Petkov
... instead of the MCi_STATUS info only for improved handling of certain types of errors later. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2010-10-21EDAC, MCE: Sanitize error codesBorislav Petkov
Clean up error codes names, shorten to mnemonics, add RRRR boundary checking. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2010-10-21EDAC, MCE: Remove unused function parameterBorislav Petkov
Remove remains from previous functionality. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2010-10-21EDAC, MCE: Add HW_ERR prefixBorislav Petkov
.. so that the user knows what she's looking at there in dmesg. Also, fix a minor cosmetic output inconsistency. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2010-10-21EDAC: Fix error returnBorislav Petkov
We should return a negative value when we cannot get the toplevel edac sysfs class. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2010-10-21x86-32, percpu: Correct the ordering of the percpu readmostly sectionH. Peter Anvin
Checkin c957ef2c59e952803766ddc22e89981ab534606f had inconsistent ordering of .data..percpu..page_aligned and .data..percpu..readmostly; the still-broken version affected x86-32 at least. The page aligned version really must be page aligned... Signed-off-by: H. Peter Anvin <hpa@zytor.com> LKML-Reference: <1287544022.4571.7.camel@sli10-conroe.sh.intel.com> Cc: Shaohua Li <shaohua.li@intel.com> Cc: Eric Dumazet <eric.dumazet@gmail.com>
2010-10-21virtio_blk: remove BKL leftoversChristoph Hellwig
Remove the BKL usage added in "block: push down BKL into .locked_ioctl". Virtio-blk doesn't use the BKL for anything, and doesn't implement any ioctl command by itself, but only uses the generic scsi_cmd_ioctl which is fine without the BKL. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2010-10-21virtio: console: Disable lseek(2) for port file operationsAmit Shah
The ports are char devices; do not have seeking capabilities. Calling nonseekable_open() from the fops_open() call and setting the llseek fops pointer to no_llseek ensures an lseek() call from userspace returns -ESPIPE. Signed-off-by: Amit Shah <amit.shah@redhat.com> CC: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2010-10-21virtio: console: Send SIGIO in case of port unplugAmit Shah
If a port has registered for SIGIO signals, let the application know that the port is getting unplugged. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2010-10-21virtio: console: Send SIGIO on new data arrival on portsAmit Shah
Send a SIGIO signal when new data arrives on a port. This is sent only when the process has requested for the signal to be sent using fcntl(). Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2010-10-21virtio: console: Send SIGIO to processes that request it for host eventsAmit Shah
A process can request for SIGIO on host connect / disconnect events using the O_ASYNC file flag using fcntl(). If that's requested, and if the guest-side connection for the port is open, any host-side open/close events for that port will raise a SIGIO. The process can then use poll() within the signal handler to find out which port triggered the signal. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2010-10-21virtio: console: Reference counting portdev structs is not neededAmit Shah
Explain in a comment why there's no need to reference-count the portdev struct: when a device is yanked out, we can't do anything more with it anyway so just give up doing anything more with the data or the vqs and exit cleanly. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2010-10-21virtio: console: Add reference counting for port structAmit Shah
When a port got hot-unplugged, when a port was open, any file operation after the unplugging resulted in a crash. This is fixed by ref-counting the port structure, and releasing it only when the file is closed. This splits the unplug operation in two parts: first marks the port as unavailable, removes all the buffers in the vqs and removes the port from the per-device list of ports. The second stage, invoked when all references drop to zero, releases the chardev and frees all other memory. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2010-10-21virtio: console: Use cdev_alloc() instead of cdev_init()Amit Shah
This moves to using cdev on the heap instead of it being embedded in the ports struct. This helps individual refcounting and will allow us to properly remove cdev structs after hot-unplugs and close operations. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2010-10-21virtio: console: Add a find_port_by_devt() functionAmit Shah
To convert to using cdev as a pointer to avoid kref troubles, we have to use a different method to get to a port from an inode than the current container_of method. Add find_port_by_devt() that looks up all portdevs and ports with those portdevs to find the right port. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2010-10-21virtio: console: Add a list of portdevs that are activeAmit Shah
The virtio_console.c driver is capable of handling multiple devices at a time. Maintain a list of devices for future traversal. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2010-10-21virtio: console: open: Use a common path for error handlingAmit Shah
Just re-arrange code for future patches. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2010-10-21virtio: console: remove_port() should return voidAmit Shah
When a port is removed, we have to assume the port is gone. So a success/failure return value doesn't make sense. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2010-10-21virtio: console: Make write() return -ENODEV on hot-unplugAmit Shah
When a port is hot-unplugged while an app was blocked on a write() call, the call was unblocked but would not get an error returned. Return -ENODEV to ensure the app knows the port has gone away. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2010-10-21virtio: console: Make read() return -ENODEV on hot-unplugAmit Shah
When a port is hot-unplugged while an app was blocked on a read() call, the call was unblocked but would not get an error returned. Return -ENODEV to ensure the app knows the port has gone away. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2010-10-21virtio: console: Unblock poll on port hot-unplugAmit Shah
When a port is hot-unplugged while an app is blocked on poll(), unblock the poll() and return. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2010-10-21virtio: console: Un-block reads on chardev closeAmit Shah
If a chardev is closed, any blocked read / poll calls should just return and not attempt to use other state. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2010-10-21virtio: console: Check if portdev is valid in send_control_msg()Amit Shah
A portdev may have been hot-unplugged while a port was open()ed. Skip sending control messages when the portdev isn't valid. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2010-10-21virtio: console: Remove control vq data only if using multiport supportAmit Shah
If a portdev isn't using multiport support, it won't have any control vq data to remove. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2010-10-21virtio: console: Reset vdev before removing deviceAmit Shah
The virtqueues should be disabled before attempting to remove the device. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2010-10-21selinux: include vmalloc.h for vmalloc_userStephen Rothwell
Include vmalloc.h for vmalloc_user (fixes ppc build warning). Acked-by: Eric Paris <eparis@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
2010-10-21secmark: fix config problem when CONFIG_NF_CONNTRACK_SECMARK is not setEric Paris
When CONFIG_NF_CONNTRACK_SECMARK is not set we accidentally attempt to use the secmark fielf of struct nf_conn. Problem is when that config isn't set the field doesn't exist. whoops. Wrap the incorrect usage in the config. Signed-off-by: Eric Paris <eparis@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
2010-10-21selinux: implement mmap on /selinux/policyEric Paris
/selinux/policy allows a user to copy the policy back out of the kernel. This patch allows userspace to actually mmap that file and use it directly. Signed-off-by: Eric Paris <eparis@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
2010-10-21SELinux: allow userspace to read policy back out of the kernelEric Paris
There is interest in being able to see what the actual policy is that was loaded into the kernel. The patch creates a new selinuxfs file /selinux/policy which can be read by userspace. The actual policy that is loaded into the kernel will be written back out to userspace. Signed-off-by: Eric Paris <eparis@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
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