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2009-12-05V4L/DVB (13040): V4L2: Add a v4l2-subdev (soc-camera) driver for OmniVision ↵Marek Vasut
OV9640 sensor Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-12-05Merge branch 'tracing-core-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (40 commits) tracing: Separate raw syscall from syscall tracer ring-buffer-benchmark: Add parameters to set produce/consumer priorities tracing, function tracer: Clean up strstrip() usage ring-buffer benchmark: Run producer/consumer threads at nice +19 tracing: Remove the stale include/trace/power.h tracing: Only print objcopy version warning once from recordmcount tracing: Prevent build warning: 'ftrace_graph_buf' defined but not used ring-buffer: Move access to commit_page up into function used tracing: do not disable interrupts for trace_clock_local ring-buffer: Add multiple iterations between benchmark timestamps kprobes: Sanitize struct kretprobe_instance allocations tracing: Fix to use __always_unused attribute compiler: Introduce __always_unused tracing: Exit with error if a weak function is used in recordmcount.pl tracing: Move conditional into update_funcs() in recordmcount.pl tracing: Add regex for weak functions in recordmcount.pl tracing: Move mcount section search to front of loop in recordmcount.pl tracing: Fix objcopy revision check in recordmcount.pl tracing: Check absolute path of input file in recordmcount.pl tracing: Correct the check for number of arguments in recordmcount.pl ...
2009-12-05Merge branch 'tracing-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: tracing: Fix trace_marker output tracing: Fix event format export tracing: Fix return value of tracing_stats_read()
2009-12-05Merge branch 'irq-core-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: genirq: Fix spurious irq seqfile conversion genirq: switch /proc/irq/*/spurious to seq_file irq: Do not attempt to create subdirectories if /proc/irq/<irq> failed irq: Remove unused debug_poll_all_shared_irqs() irq: Fix docbook comments irq: trivial: Fix typo in comment for #endif
2009-12-05Merge branch 'core-softlockup-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-softlockup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: softlockup: Fix hung_task_check_count sysctl
2009-12-05Merge branch 'core-signal-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-signal-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: signal: Print warning message when dropping signals signal: Fix alternate signal stack check
2009-12-05Merge branch 'core-rcu-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (31 commits) rcu: Make RCU's CPU-stall detector be default rcu: Add expedited grace-period support for preemptible RCU rcu: Enable fourth level of TREE_RCU hierarchy rcu: Rename "quiet" functions rcu: Re-arrange code to reduce #ifdef pain rcu: Eliminate unneeded function wrapping rcu: Fix grace-period-stall bug on large systems with CPU hotplug rcu: Eliminate __rcu_pending() false positives rcu: Further cleanups of use of lastcomp rcu: Simplify association of forced quiescent states with grace periods rcu: Accelerate callback processing on CPUs not detecting GP end rcu: Mark init-time-only rcu_bootup_announce() as __init rcu: Simplify association of quiescent states with grace periods rcu: Rename dynticks_completed to completed_fqs rcu: Enable synchronize_sched_expedited() fastpath rcu: Remove inline from forward-referenced functions rcu: Fix note_new_gpnum() uses of ->gpnum rcu: Fix synchronization for rcu_process_gp_end() uses of ->completed counter rcu: Prepare for synchronization fixes: clean up for non-NO_HZ handling of ->completed counter rcu: Cleanup: balance rcu_irq_enter()/rcu_irq_exit() calls ...
2009-12-05Merge branch 'core-printk-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-printk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: ratelimit: Make suppressed output messages more useful printk: Remove ratelimit.h from kernel.h ratelimit: Fix/allow use in atomic contexts ratelimit: Use per ratelimit context locking
2009-12-05Merge branch 'core-locking-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: mutex: Fix missing conditions to build mutex_spin_on_owner() mutex: Better control mutex adaptive spinning config locking, task_struct: Reduce size on TRACE_IRQFLAGS and 64bit locking: Use __[SPIN|RW]_LOCK_UNLOCKED in [spin|rw]_lock_init() locking: Remove unused prototype locking: Reduce ifdefs in kernel/spinlock.c locking: Make inlining decision Kconfig based
2009-12-05Merge branch 'core-ipi-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-ipi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: generic-ipi: Add smp_call_function_any() generic-ipi: Fix misleading smp_call_function*() description
2009-12-05Merge branch 'core-iommu-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (63 commits) x86, Calgary IOMMU quirk: Find nearest matching Calgary while walking up the PCI tree x86/amd-iommu: Remove amd_iommu_pd_table x86/amd-iommu: Move reset_iommu_command_buffer out of locked code x86/amd-iommu: Cleanup DTE flushing code x86/amd-iommu: Introduce iommu_flush_device() function x86/amd-iommu: Cleanup attach/detach_device code x86/amd-iommu: Keep devices per domain in a list x86/amd-iommu: Add device bind reference counting x86/amd-iommu: Use dev->arch->iommu to store iommu related information x86/amd-iommu: Remove support for domain sharing x86/amd-iommu: Rearrange dma_ops related functions x86/amd-iommu: Move some pte allocation functions in the right section x86/amd-iommu: Remove iommu parameter from dma_ops_domain_alloc x86/amd-iommu: Use get_device_id and check_device where appropriate x86/amd-iommu: Move find_protection_domain to helper functions x86/amd-iommu: Simplify get_device_resources() x86/amd-iommu: Let domain_for_device handle aliases x86/amd-iommu: Remove iommu specific handling from dma_ops path x86/amd-iommu: Remove iommu parameter from __(un)map_single x86/amd-iommu: Make alloc_new_range aware of multiple IOMMUs ...
2009-12-05Merge 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: (31 commits) GFS2: Fix glock refcount issues writeback: remove unused nonblocking and congestion checks (gfs2) GFS2: drop rindex glock to refresh rindex list GFS2: Tag all metadata with jid GFS2: Locking order fix in gfs2_check_blk_state GFS2: Remove dirent_first() function GFS2: Display nobarrier option in /proc/mounts GFS2: add barrier/nobarrier mount options GFS2: remove division from new statfs code GFS2: Improve statfs and quota usability GFS2: Use dquot_send_warning() VFS: Export dquot_send_warning GFS2: Add set_xquota support GFS2: Add get_xquota support GFS2: Clean up gfs2_adjust_quota() and do_glock() GFS2: Remove constant argument from qd_get() GFS2: Remove constant argument from qdsb_get() GFS2: Add proper error reporting to quota sync via sysfs GFS2: Add get_xstate quota function GFS2: Remove obsolete code in quota.c ...
2009-12-05Merge branch 'next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6 * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6: (30 commits) TOMOYO: Add recursive directory matching operator support. remove CONFIG_SECURITY_FILE_CAPABILITIES compile option SELinux: print denials for buggy kernel with unknown perms Silence the existing API for capability version compatibility check. LSM: Move security_path_chmod()/security_path_chown() to after mutex_lock(). SELinux: header generation may hit infinite loop selinux: Fix warnings security: report the module name to security_module_request Config option to set a default LSM sysctl: require CAP_SYS_RAWIO to set mmap_min_addr tpm: autoload tpm_tis based on system PnP IDs tpm_tis: TPM_STS_DATA_EXPECT workaround define convenient securebits masks for prctl users (v2) tpm: fix header for modular build tomoyo: improve hash bucket dispersion tpm add default function definitions LSM: imbed ima calls in the security hooks SELinux: add .gitignore files for dynamic classes security: remove root_plug SELinux: fix locking issue introduced with c6d3aaa4e35c71a3 ...
2009-12-05Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6: (50 commits) pcmcia: rework the irq_req_t typedef pcmcia: remove deprecated handle_to_dev() macro pcmcia: pcmcia_request_window() doesn't need a pointer to a pointer pcmcia: remove unused "window_t" typedef pcmcia: move some window-related code to pcmcia_ioctl.c pcmcia: Change window_handle_t logic to unsigned long pcmcia: Pass struct pcmcia_socket to pcmcia_get_mem_page() pcmcia: Pass struct pcmcia_device to pcmcia_map_mem_page() pcmcia: Pass struct pcmcia_device to pcmcia_release_window() drivers/pcmcia: remove unnecessary kzalloc pcmcia: correct handling for Zoomed Video registers in topic.h pcmcia: fix printk formats pcmcia: autoload module pcmcia pcmcia/staging: update comedi drivers PCMCIA: stop duplicating pci_irq in soc_pcmcia_socket PCMCIA: ss: allow PCI IRQs > 255 PCMCIA: soc_common: remove 'dev' member from soc_pcmcia_socket PCMCIA: soc_common: constify soc_pcmcia_socket ops member PCMCIA: sa1111: remove duplicated initializers PCMCIA: sa1111: wrap soc_pcmcia_socket to contain sa1111 specific data ...
2009-12-05avr32: Convert BUG() to use unreachable()David Daney
Use the new unreachable() macro instead of for(;;); Signed-off-by: David Daney <ddaney@caviumnetworks.com> Acked-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-05s390: Convert BUG() to use unreachable()David Daney
Use the new unreachable() macro instead of for(;;); Signed-off-by: David Daney <ddaney@caviumnetworks.com> Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> CC: Heiko Carstens <heiko.carstens@de.ibm.com> CC: linux390@de.ibm.com CC: linux-s390@vger.kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-05MIPS: Convert BUG() to use unreachable()David Daney
Use the new unreachable() macro instead of while(1); Signed-off-by: David Daney <ddaney@caviumnetworks.com> Acked-by: Ralf Baechle <ralf@linux-mips.org> CC: linux-mips@linux-mips.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-05x86: Convert BUG() to use unreachable()David Daney
Use the new unreachable() macro instead of for(;;);. When allyesconfig is built with a GCC-4.5 snapshot on i686 the size of the text segment is reduced by 3987 bytes (from 6827019 to 6823032). Signed-off-by: David Daney <ddaney@caviumnetworks.com> Acked-by: "H. Peter Anvin" <hpa@zytor.com> CC: Thomas Gleixner <tglx@linutronix.de> CC: Ingo Molnar <mingo@redhat.com> CC: x86@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-05Add support for GCC-4.5's __builtin_unreachable() to compiler.h (v2)David Daney
Starting with version 4.5, GCC has a new built-in function __builtin_unreachable() that can be used in places like the kernel's BUG() where inline assembly is used to transfer control flow. This eliminated the need for an endless loop in these places. The patch adds a new macro 'unreachable()' that will expand to either __builtin_unreachable() or an endless loop depending on the compiler version. Change from v1: Simplify unreachable() for non-GCC 4.5 case. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Acked-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-03GFS2: Fix glock refcount issuesSteven Whitehouse
This patch fixes some ref counting issues. Firstly by moving the point at which we drop the ref count after a dlm lock operation has completed we ensure that we never call gfs2_glock_hold() on a lock with a zero ref count. Secondly, by using atomic_dec_and_lock() in gfs2_glock_put() we ensure that at no time will a glock with zero ref count appear on the lru_list. That means that we can remove the check for this in our shrinker (which was racy). Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2009-12-03writeback: remove unused nonblocking and congestion checks (gfs2)Wu Fengguang
No one is calling wb_writeback and write_cache_pages with wbc.nonblocking=1 any more. And lumpy pageout will want to do nonblocking writeback without the congestion wait. Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2009-12-03GFS2: drop rindex glock to refresh rindex listBenjamin Marzinski
When a gfs2 filesystem is grown, it needs to rebuild the rindex list to be able to use the new space. gfs2 does this when the rindex is marked not uptodate, which happens when the rindex glock is dropped. However, on a single node setup, there is never any reason to drop the rindex glock, so gfs2 never invalidates the the rindex. This patch makes gfs2 automatically drop the rindex glock after filesystem grows, so it can refresh the rindex list. Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2009-12-03GFS2: Tag all metadata with jidSteven Whitehouse
There are two spare field in the header common to all GFS2 metadata. One is just the right size to fit a journal id in it, and this patch updates the journal code so that each time a metadata block is modified, we tag it with the journal id of the node which is performing the modification. The reason for this is that it should make it much easier to debug issues which arise if we can tell which node was the last to modify a particular metadata block. Since the field is updated before the block is written into the journal, each journal should only contain metadata which is tagged with its own journal id. The one exception to this is the journal header block, which might have a different node's id in it, if that journal was recovered by another node in the cluster. Thus each journal will contain a record of which nodes recovered it, via the journal header. The other field in the metadata header could potentially be used to hold information about what kind of operation was performed, but for the time being we just zero it on each transaction so that if we use it for that in future, we'll know that the information (where it exists) is reliable. I did consider using the other field to hold the journal sequence number, however since in GFS2's journaling we write the modified data into the journal and not the original data, this gives no information as to what action caused the modification, so I think we can probably come up with a better use for those 64 bits in the future. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2009-12-03GFS2: Locking order fix in gfs2_check_blk_stateSteven Whitehouse
In some cases we already have the rindex lock when we enter this function. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2009-12-03GFS2: Remove dirent_first() functionSteven Whitehouse
This function only had one caller left, and that caller only called it for leaf blocks, hence one branch of the "if" was never taken. In addition the call to get_left had already verified the metadata type, so the function can be reduced to a single line of code in its caller. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2009-12-03GFS2: Display nobarrier option in /proc/mountsSteven Whitehouse
Since the default is barriers on, this only displays the nobarrier option when that is active. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2009-12-03GFS2: add barrier/nobarrier mount optionsChristoph Hellwig
Currently gfs2 issues barrier unconditionally. There are various reasons to disable them, be that just for testing or for stupid devices flushing large battert backed caches. Add a nobarrier option that matches xfs and btrfs for this. Also add a symmetric barrier option to turn it back on at remount time. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2009-12-03GFS2: remove division from new statfs codeBenjamin Marzinski
It's not necessary to do any 64bit division for the statfs sync code, so remove it. Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2009-12-03GFS2: Improve statfs and quota usabilityBenjamin Marzinski
GFS2 now has three new mount options, statfs_quantum, quota_quantum and statfs_percent. statfs_quantum and quota_quantum simply allow you to set the tunables of the same name. Setting setting statfs_quantum to 0 will also turn on the statfs_slow tunable. statfs_percent accepts an integer between 0 and 100. Numbers between 1 and 100 will cause GFS2 to do any early sync when the local number of blocks free changes by at least statfs_percent from the totoal number of blocks free. Setting statfs_percent to 0 disables this. Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2009-12-03GFS2: Use dquot_send_warning()Steven Whitehouse
This adds support to GFS2 to send quota warnings via netlink. Also it removes a stray \r which was left over from when the code used to print warnings on the console. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2009-12-03VFS: Export dquot_send_warningSteven Whitehouse
Sending a message to userspace in a generic format to warn of events (e.g. quota exceeded) in the quota subsystem is a generically useful feature. This patch makes some minor changes to the send_message function from dquot.c renaming it quota_send_message, moving it to quota.c and exporting it for use by filesystems which do not use the dquot code. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2009-12-03GFS2: Add set_xquota supportSteven Whitehouse
This patch adds the ability to set GFS2 quota limit and warning levels via the XFS quota API. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2009-12-03GFS2: Add get_xquota supportSteven Whitehouse
This adds support for viewing the current GFS2 quota settings via the XFS quota API. The setting of quotas will be addressed in a later patch. Fields which are not supported here are left set to zero. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Reviewed-by: Bob Peterson <rpeterso@redhat.com>
2009-12-03GFS2: Clean up gfs2_adjust_quota() and do_glock()Steven Whitehouse
Both of these functions contained confusing and in one case duplicate code. This patch adds a new check in do_glock() so that we report -ENOENT if we are asked to sync a quota entry which doesn't exist. Due to the previous patch this is now reported correctly to userspace. Also there are a few new comments, and I hope that the code is easier to understand now. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2009-12-03GFS2: Remove constant argument from qd_get()Steven Whitehouse
This function was only ever called with the "create" argument set to true, so we can remove it. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2009-12-03GFS2: Remove constant argument from qdsb_get()Steven Whitehouse
The "create" argument to qdsb_get() was only ever set to true, so this patch removes that argument. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2009-12-03GFS2: Add proper error reporting to quota sync via sysfsSteven Whitehouse
For some reason, the errors were not making it to userspace. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2009-12-03GFS2: Add get_xstate quota functionSteven Whitehouse
This allows querying of the quota state via the XFS quota API. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2009-12-03GFS2: Remove obsolete code in quota.cSteven Whitehouse
There is no point in testing for GLF_DEMOTE here, we might as well always release the glock at that point. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2009-12-03GFS2: Hook gfs2_quota_sync into VFS via gfs2_quotactl_opsSteven Whitehouse
The plan is to add further operations to the gfs2_quotactl_ops in future patches. The sync operation is easy, so we start with that one. We plan to use the XFS quota control functions because they more closely match the GFS2 ones. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2009-12-03GFS2: Alter arguments of gfs2_quota/statfs_syncSteven Whitehouse
These two functions are altered so that gfs2_quota_sync may in future be called directly from the VFS. The GFS2 superblock changes to a VFS super block and there is an addition of an int argument which is currently ignored. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2009-12-03VFS: Use GFP_NOFS in posix_acl_from_xattr()Steven Whitehouse
GFS2 needs to call this from under a glock, so we need GFP_NOFS and I suspect that other filesystems might require this too. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2009-12-03GFS2: Add cached ACLs supportSteven Whitehouse
The other patches in this series have been building towards being able to support cached ACLs like other filesystems. The only real difference with GFS2 is that we have to invalidate the cache when we drop a glock, but that is dealt with in earlier patches. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2009-12-03GFS2: Clean up ACLsSteven Whitehouse
To prepare for support for caching of ACLs, this cleans up the GFS2 ACL support by pushing the xattr code back into xattr.c and changing the acl_get function into one which only returns ACLs so that we can drop the caching function into it shortly. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2009-12-03GFS2: Use gfs2_set_mode() instead of munge_mode()Steven Whitehouse
These two functions do the same thing, so lets only use one of them. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2009-12-03GFS2: Use forget_all_cached_acls()Steven Whitehouse
Invalidate all the cached ACLs when we drop the glock. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2009-12-03VFS: Add forget_all_cached_acls()Steven Whitehouse
This is required for cluster filesystems which want to use cached ACLs so that they can invalidate the cache when required. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Cc: Alexander Viro <aviro@redhat.com> Cc: Christoph Hellwig <hch@infradead.org>
2009-12-03GFS2: Fix up system xattrsSteven Whitehouse
This code has been shamelessly stolen from XFS at the suggestion of Christoph Hellwig. I've not added support for cached ACLs so far... watch for that in a later patch, although this is designed in such a way that they should be easy to add. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Cc: Christoph Hellwig <hch@infradead.org>
2009-12-03GFS2: Fix -o meta mounts for subsequent mounts (i.e. all but the first one)Steven Whitehouse
We have a long term plan to use the "-o meta" flag to GFS2 mounts to access the alternate root which is used to store metadata for a GFS2 filesystem. This will allow us to eventually remove support for the gfs2meta filesystem type (which is in any case just a "front end" to the gfs2 filesystem type with the meta/master root). Currently the "-o meta" option is only taken into account on the initial mount of the filesystem. Subsequent mounts of the same filesystem (i.e. on the same device) result in basically the same as bind mounting the root of the original mount. This patch changes that by using what is more or less a copy of get_sb_bdev() and extending it so that it will take into account the alternate root in all cases. The main difference is that we have to parse the mount options a bit earlier. We can then use them to select the appropriate root towards the end of the function. In addition this also fixes a bug where it was possible (but certainly not desirable) to set different ro/rw options for the meta root when mounted via the gfs2meta fs compared with the original mount. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Cc: Alexander Viro <aviro@redhat.com>
2009-12-03GFS2: Fix potential race in glock codeSteven Whitehouse
We need to be careful of the ordering between clearing the GLF_LOCK bit and scheduling the workqueue. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>