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2009-08-04sunrpc: fix memory leak in unix_gid cache.NeilBrown
When we look up an entry in the uid->gidlist cache, we take a reference to the content but don't drop the reference to the cache entry. So it never gets freed. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-08-04sunrpc/cache: recheck cache validity after cache_defer_reqNeilBrown
If cache_defer_req did not leave the request on a queue, then it could possibly have waited long enough that the cache became valid. So check the status after the call. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-08-04sunrpc/cache: make sure deferred requests eventually get revisited.NeilBrown
While deferred requests normally get revisited quite quickly, it is possible for a request to remain in the deferral queue when the cache item is discarded. We can easily make sure that doesn't happen by calling cache_revisit_request just before the final 'put'. Also there is a small chance that a race would cause one thread to defer a request against a cache item while another thread is failing to queue an upcall for that item. So when the upcall fails, make sure to revisit all deferred requests. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-08-04sunrpc/cache: rename queue_loose to cache_dequeueNeilBrown
'loose' was a mis-spelling of 'lose', and even that wasn't a good word choice. So give this function a more useful name. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-07-28nfsd41: encode replay sequence from the slot valuesAndy Adamson
The sequence operation is not cached; always encode the sequence operation on a replay from the slot table and session values. This simplifies the sessions replay logic in nfsd4_proc_compound. If this is a replay of a compound that was specified not to be cached, return NFS4ERR_RETRY_UNCACHED_REP. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-07-28nfsd41: rename nfsd4_enc_uncached_replayAndy Adamson
This function is only used for SEQUENCE replay. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-07-28nfsd41: Use separate DRC for setclientidAndy Adamson
Instead of trying to share the generic 4.1 reply cache code for the CREATE_SESSION reply cache, it's simpler to handle CREATE_SESSION separately. The nfs41 single slot clientid DRC holds the results of create session processing. CREATE_SESSION can be preceeded by a SEQUENCE operation (an embedded CREATE_SESSION) and the create session single slot cache must be maintained. nfsd4_replay_cache_entry() and nfsd4_store_cache_entry() do not implement the replay of an embedded CREATE_SESSION. The clientid DRC slot does not need the inuse, cachethis or other fields that the multiple slot session cache uses. Replace the clientid DRC cache struct nfs4_slot cache with a new nfsd4_clid_slot cache. Save the xdr struct nfsd4_create_session into the cache at the end of processing, and on a replay, replace the struct for the replay request with the cached version all while under the state lock. nfsd4_proc_compound will handle both the solo and embedded CREATE_SESSION case via the normal use of encode_operation. Errors that do not change the create session cache: A create session NFS4ERR_STALE_CLIENTID error means that a client record (and associated create session slot) could not be found and therefore can't be changed. NFSERR_SEQ_MISORDERED errors do not change the slot cache. All other errors get cached. Remove the clientid DRC specific check in nfs4svc_encode_compoundres to put the session only if cstate.session is set which will now always be true. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-07-28nfsd41: change check_slot_seqid parametersAndy Adamson
For separation of session slot and clientid slot processing. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-07-28nfsd41: remove redundant forechannel max requests checkAndy Adamson
This check is done in set_forechannel_maxreqs. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-07-28nfsd41: hange from page to memory based drc limitsAndy Adamson
NFSD_SLOT_CACHE_SIZE is the size of all encoded operation responses (excluding the sequence operation) that we want to cache. For now, keep NFSD_SLOT_CACHE_SIZE at PAGE_SIZE. It will be reduced when the DRC is changed from page based to memory based. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-07-28nfsd41: reserve less memory for DRCAndy Adamson
Also remove a slightly misleading comment. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-07-28nfsd41: minor set_forechannel_maxreqs cleanupAndy Adamson
Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-07-28nfsd41: reclaim DRC memory on session freeAndy Adamson
This fixes a leak which would eventually lock out new clients. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-07-28nfsd: minor write_pool_threads exit cleanupJ. Bruce Fields
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-07-28Fix memory leak in write_pool_threadsEric Sesterhenn
kmemleak produces the following warning unreferenced object 0xc9ec02a0 (size 8): comm "cat", pid 19048, jiffies 730243 backtrace: [<c01bf970>] create_object+0x100/0x240 [<c01bfadb>] kmemleak_alloc+0x2b/0x60 [<c01bcd4b>] __kmalloc+0x14b/0x270 [<c02fd027>] write_pool_threads+0x87/0x1d0 [<c02fcc08>] nfsctl_transaction_write+0x58/0x70 [<c02fcc6f>] nfsctl_transaction_read+0x4f/0x60 [<c01c2574>] vfs_read+0x94/0x150 [<c01c297d>] sys_read+0x3d/0x70 [<c0102d6b>] sysenter_do_call+0x12/0x32 [<ffffffff>] 0xffffffff write_pool_threads() only frees nthreads on error paths, in the success case we leak it. Signed-off-by: Eric Sesterhenn <eric.sesterhenn@lsexperts.de> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-07-14nfsd41: use globals for DRC limitsAndy Adamson
The version 4.1 DRC memory limit and tracking variables are server wide and session specific. Replace struct svc_serv fields with globals. Stop using the svc_serv sv_lock. Add a spinlock to serialize access to the DRC limit management variables which change on session creation and deletion (usage counter) or (future) administrative action to adjust the total DRC memory limit. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com>
2009-07-14SUNRPC: handle IPv6 PKTINFO when extracting destination addressChuck Lever
PKTINFO is needed to scrape the caller's IP address off the socket so RPC datagram replies are routed correctly. Fill in missing pieces in the kernel RPC server's UDP receive path to request IPv6 PKTINFO and correctly parse the IPv6 cmsg header. Without this patch, kernel RPC services drop all incoming requests on UDP on IPv6. Related commit: 7a37f5787e76bf1765c1add3a9a7163f841a28bb Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Cc: Neil Brown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-07-14NFSv4: ACL in operations 'open' and 'create' should be usedYu Zhiguo
ACL in operations 'open' and 'create' is decoded but never be used. It should be set as the initial ACL for the object according to RFC3530. If error occurs when setting the ACL, just clear the ACL bit in the returned attr bitmap. Signed-off-by: Yu Zhiguo <yuzg@cn.fujitsu.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-07-10nfsd41: gather and report statistics also for v4.1 opsBenny Halevy
Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-07-03svcrdma: fix error handling of rdma_alloc_frmr()Wei Yongjun
ib_alloc_fast_reg_mr() and ib_alloc_fast_reg_page_list() returns ERR_PTR() and not NULL. Compile tested only. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-06-24Linux 2.6.31-rc1Linus Torvalds
2009-06-24Revert "PCI: use ACPI _CRS data by default"Linus Torvalds
This reverts commit 9e9f46c44e487af0a82eb61b624553e2f7118f5b. Quoting from the commit message: "At this point, it seems to solve more problems than it causes, so let's try using it by default. It's an easy revert if it ends up causing trouble." And guess what? The _CRS code causes trouble. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-24Merge git://git.infradead.org/battery-2.6Linus Torvalds
* git://git.infradead.org/battery-2.6: da9030_battery: Fix race between event handler and monitor Add MAX17040 Fuel Gauge driver w1: ds2760_battery: add support for sleep mode feature w1: ds2760: add support for EEPROM read and write ds2760_battery: cleanups in ds2760_battery_probe()
2009-06-24Merge branches 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/{vfs-2.6,audit-current} * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: another race fix in jfs_check_acl() Get "no acls for this inode" right, fix shmem breakage inline functions left without protection of ifdef (acl) * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current: audit: inode watches depend on CONFIG_AUDIT not CONFIG_AUDIT_SYSCALL
2009-06-24another race fix in jfs_check_acl()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-06-24Get "no acls for this inode" right, fix shmem breakageAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-06-24audit: inode watches depend on CONFIG_AUDIT not CONFIG_AUDIT_SYSCALLEric Paris
Even though one cannot make use of the audit watch code without CONFIG_AUDIT_SYSCALL the spaghetti nature of the audit code means that the audit rule filtering requires that it at least be compiled. Thus build the audit_watch code when we build auditfilter like it was before cfcad62c74abfef83762dc05a556d21bdf3980a2 Clearly this is a point of potential future cleanup.. Reported-by: Frans Pop <elendil@planet.nl> Signed-off-by: Eric Paris <eparis@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-06-24inline functions left without protection of ifdef (acl)Markus Trippelsdorf
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-06-24Merge branch 'futexes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'futexes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: futex: Fix the write access fault problem for real
2009-06-24futex: Fix the write access fault problem for realThomas Gleixner
commit 64d1304a64 (futex: setup writeable mapping for futex ops which modify user space data) did address only half of the problem of write access faults. The patch was made on two wrong assumptions: 1) access_ok(VERIFY_WRITE,...) would actually check write access. On x86 it does _NOT_. It's a pure address range check. 2) a RW mapped region can not go away under us. That's wrong as well. Nobody can prevent another thread to call mprotect(PROT_READ) on that region where the futex resides. If that call hits between the get_user_pages_fast() verification and the actual write access in the atomic region we are toast again. The solution is to not rely on access_ok and get_user() for any write access related fault on private and shared futexes. Instead we need to fault it in with verification of write access. There is no generic non destructive write mechanism which would fault the user page in trough a #PF, but as we already know that we will fault we can as well call get_user_pages() directly and avoid the #PF overhead. If get_user_pages() returns -EFAULT we know that we can not fix it anymore and need to bail out to user space. Remove a bunch of confusing comments on this issue as well. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: stable@kernel.org
2009-06-24SLUB: Don't pass __GFP_FAIL for the initial allocationPekka Enberg
SLUB uses higher order allocations by default but falls back to small orders under memory pressure. Make sure the GFP mask used in the initial allocation doesn't include __GFP_NOFAIL. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-24Don't warn about order-1 allocations with __GFP_NOFAILLinus Torvalds
Traditionally, we never failed small orders (even regardless of any __GFP_NOFAIL flags), and slab will allocate order-1 allocations even for small allocations that could fit in a single page (in order to avoid excessive fragmentation). Maybe we should remove this warning entirely, but before making that judgement, at least limit it to bigger allocations. Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-24Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: Staging: octeon-ethernet: Fix race freeing transmit buffers. Staging: octeon-ethernet: Convert to use net_device_ops. MIPS: Cavium: Add CPU hotplugging code. MIPS: SMP: Allow suspend and hibernation if CPU hotplug is available MIPS: Add arch generic CPU hotplug DMA: txx9dmac: use dma_unmap_single if DMA_COMPL_{SRC,DEST}_UNMAP_SINGLE set MIPS: Sibyte: Fix build error if CONFIG_SERIAL_SB1250_DUART is undefined. MIPS: MIPSsim: Fix build error if MSC01E_INT_BASE is undefined. MIPS: Hibernation: Remove SMP TLB and cacheflushing code. MIPS: Build fix - include <linux/smp.h> into all smp_processor_id() users. MIPS: bug.h Build fix - include <linux/compiler.h>.
2009-06-24Staging: octeon-ethernet: Fix race freeing transmit buffers.David Daney
The existing code had the following race: Thread-1 Thread-2 inc/read in_use inc/read in_use inc tx_free_list[qos].len inc tx_free_list[qos].len The actual in_use value was incremented twice, but thread-1 is going to free memory based on its stale value, and will free one too many times. The result is that memory is freed back to the kernel while its packet is still in the transmit buffer. If the memory is overwritten before it is transmitted, the hardware will put a valid checksum on it and send it out (just like it does with good packets). If by chance the TCP flags are clobbered but not the addresses or ports, the result can be a broken TCP stream. The fix is to track the number of freed packets in a single location (a Fetch-and-Add Unit register). That way it can never get out of sync with itself. We try to free up to MAX_SKB_TO_FREE (currently 10) buffers at a time. If fewer are available we adjust the free count with the difference. The action of claiming buffers to free is atomic so two threads cannot claim the same buffers. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-06-24Staging: octeon-ethernet: Convert to use net_device_ops.David Daney
Convert the driver to use net_device_ops as it is now mandatory. Also compensate for the removal of struct sk_buff's dst field. The changes are mostly mechanical, the content of ethernet-common.c was moved to ethernet.c and ethernet-common.{c,h} are removed. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-06-24MIPS: Cavium: Add CPU hotplugging code.Ralf Baechle
Thanks to Cavium Inc. for the code contribution and help. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-06-24MIPS: SMP: Allow suspend and hibernation if CPU hotplug is availableRalf Baechle
The SMP implementation of suspend and hibernate depends on CPU hotplugging. In the past we didn't have CPU hotplug so suspend and hibernation were not possible on SMP systems. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-06-24MIPS: Add arch generic CPU hotplugRalf Baechle
Each platform has to add support for CPU hotplugging itself by providing suitable definitions for the cpu_disable and cpu_die of the smp_ops methods and setting SYS_SUPPORTS_HOTPLUG_CPU. A platform should only set SYS_SUPPORTS_HOTPLUG_CPU once all it's smp_ops definitions have the necessary changes. This patch contains the changes to the dummy smp_ops definition for uni-processor systems. Parts of the code contributed by Cavium Inc. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-06-24DMA: txx9dmac: use dma_unmap_single if DMA_COMPL_{SRC,DEST}_UNMAP_SINGLE setAtsushi Nemoto
This patch does not change actual behaviour since dma_unmap_page is just an alias of dma_unmap_single on MIPS. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Cc: Ralf Baechle <ralf@linux-mips.org> Acked-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-06-24MIPS: Sibyte: Fix build error if CONFIG_SERIAL_SB1250_DUART is undefined.Ralf Baechle
This fixes kernel.org bugzilla 13596, see http://bugzilla.kernel.org/show_bug.cgi?id=13596 Reported-by: dvice_null@yahoo.com Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-06-24MIPS: MIPSsim: Fix build error if MSC01E_INT_BASE is undefined.Ralf Baechle
This fixes kernel.org bugzilla 13595, see http://bugzilla.kernel.org/show_bug.cgi?id=13595 Reported-by: dvice_null@yahoo.com Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-06-24MIPS: Hibernation: Remove SMP TLB and cacheflushing code.Ralf Baechle
We can't perform any flushes on SMP from swsusp_arch_resume because interrupts are disabled. A cross-CPU flush is unnecessary anyway because all but the local CPU have already been disabled. A local flush is not needed either because we didn't change any mappings. So just delete the code. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-06-24MIPS: Build fix - include <linux/smp.h> into all smp_processor_id() users.Ralf Baechle
Some of the were relying into smp.h being dragged in by another header which of course is fragile. <asm/cpu-info.h> uses smp_processor_id() only in macros and including smp.h there leads to an include loop, so don't change cpu-info.h. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-06-24MIPS: bug.h Build fix - include <linux/compiler.h>.Ralf Baechle
In the past this file somehow used to be dragged in. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-06-24Merge git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dmLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm: (48 commits) dm mpath: change to be request based dm: disable interrupt when taking map_lock dm: do not set QUEUE_ORDERED_DRAIN if request based dm: enable request based option dm: prepare for request based option dm raid1: add userspace log dm: calculate queue limits during resume not load dm log: fix create_log_context to use logical_block_size of log device dm target:s introduce iterate devices fn dm table: establish queue limits by copying table limits dm table: replace struct io_restrictions with struct queue_limits dm table: validate device logical_block_size dm table: ensure targets are aligned to logical_block_size dm ioctl: support cookies for udev dm: sysfs add suspended attribute dm table: improve warning message when devices not freed before destruction dm mpath: add service time load balancer dm mpath: add queue length load balancer dm mpath: add start_io and nr_bytes to path selectors dm snapshot: use barrier when writing exception store ...
2009-06-24Merge branch 'for-upstream' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwb * 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwb: uwb: allow WLP to be used with IPv6. uwb: event_size should be signed
2009-06-24Merge branch 'audit.b63' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current * 'audit.b63' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current: Fix rule eviction order for AUDIT_DIR Audit: clean up all op= output to include string quoting Audit: move audit_get_nd completely into audit_watch audit: seperate audit inode watches into a subfile Audit: clean up audit_receive_skb Audit: cleanup netlink mesg handling Audit: unify the printk of an skb when auditd not around Audit: dereferencing krule as if it were an audit_watch Audit: better estimation of execve record length Audit: fix audit watch use after free
2009-06-24MAINTAINERS: Change mailing list info for CRISJesper Nilsson
Posting to the dev-etrax mailing list is only allowed for subscribers, and the list is more geared toward user applications than kernel developers. Change to newly created mailing list for CRIS. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-24Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (72 commits) asus-laptop: remove EXPERIMENTAL dependency asus-laptop: use pr_fmt and pr_<level> eeepc-laptop: cpufv updates eeepc-laptop: sync eeepc-laptop with asus_acpi asus_acpi: Deprecate in favor of asus-laptop acpi4asus: update MAINTAINER and KConfig links asus-laptop: platform dev as parent for led and backlight eeepc-laptop: enable camera by default ACPI: Rename ACPI processor device bus ID acerhdf: Acer Aspire One fan control ACPI: video: DMI workaround broken Acer 7720 BIOS enabling display brightness ACPI: run ACPI device hot removal in kacpi_hotplug_wq ACPI: Add the reference count to avoid unloading ACPI video bus twice ACPI: DMI to disable Vista compatibility on some Sony laptops ACPI: fix a deadlock in hotplug case Show the physical device node of backlight class device. ACPI: pdc init related memory leak with physical CPU hotplug ACPI: pci_root: remove unused dev/fn information ACPI: pci_root: simplify list traversals ACPI: pci_root: use driver data rather than list lookup ...
2009-06-24Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (23 commits) switch xfs to generic acl caching helpers helpers for acl caching + switch to those switch shmem to inode->i_acl switch reiserfs to inode->i_acl switch reiserfs to usual conventions for caching ACLs reiserfs: minimal fix for ACL caching switch nilfs2 to inode->i_acl switch btrfs to inode->i_acl switch jffs2 to inode->i_acl switch jfs to inode->i_acl switch ext4 to inode->i_acl switch ext3 to inode->i_acl switch ext2 to inode->i_acl add caching of ACLs in struct inode fs: Add new pre-allocation ioctls to vfs for compatibility with legacy xfs ioctls cleanup __writeback_single_inode ... and the same for vfsmount id/mount group id Make allocation of anon devices cheaper update Documentation/filesystems/Locking devpts: remove module-related code ...
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