- 15 12月, 2012 1 次提交
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由 Shaohua Li 提交于
In MD raid case, discard granularity might not be power of 2, for example, a 4-disk raid5 has 3*chunk_size discard granularity. Correct the calculation for such cases. Reported-by: NNeil Brown <neilb@suse.de> Signed-off-by: NShaohua Li <shli@fusionio.com> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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- 06 12月, 2012 5 次提交
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由 Bart Van Assche 提交于
The function bsg_goose_queue() does not have any in-tree callers, so let's remove it. Signed-off-by: NBart Van Assche <bvanassche@acm.org> Acked-by: NTejun Heo <tj@kernel.org> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Bart Van Assche 提交于
Some request_fn implementations, e.g. scsi_request_fn(), unlock the queue lock internally. This may result in multiple threads executing request_fn for the same queue simultaneously. Keep track of the number of active request_fn calls and make sure that blk_cleanup_queue() waits until all active request_fn invocations have finished. A block driver may start cleaning up resources needed by its request_fn as soon as blk_cleanup_queue() finished, so blk_cleanup_queue() must wait for all outstanding request_fn invocations to finish. Signed-off-by: NBart Van Assche <bvanassche@acm.org> Reported-by: NChanho Min <chanho.min@lge.com> Cc: James Bottomley <JBottomley@Parallels.com> Cc: Mike Christie <michaelc@cs.wisc.edu> Acked-by: NTejun Heo <tj@kernel.org> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Bart Van Assche 提交于
A block driver may start cleaning up resources needed by its request_fn as soon as blk_cleanup_queue() finished, so request_fn must not be invoked after draining finished. This is important when blk_run_queue() is invoked without any requests in progress. As an example, if blk_drain_queue() and scsi_run_queue() run in parallel, blk_drain_queue() may have finished all requests after scsi_run_queue() has taken a SCSI device off the starved list but before that last function has had a chance to run the queue. Signed-off-by: NBart Van Assche <bvanassche@acm.org> Cc: James Bottomley <JBottomley@Parallels.com> Cc: Mike Christie <michaelc@cs.wisc.edu> Cc: Chanho Min <chanho.min@lge.com> Acked-by: NTejun Heo <tj@kernel.org> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Bart Van Assche 提交于
QUEUE_FLAG_DEAD is used to indicate that queuing new requests must stop. After this flag has been set queue draining starts. However, during the queue draining phase it is still safe to invoke the queue's request_fn, so QUEUE_FLAG_DYING is a better name for this flag. This patch has been generated by running the following command over the kernel source tree: git grep -lEw 'blk_queue_dead|QUEUE_FLAG_DEAD' | xargs sed -i.tmp -e 's/blk_queue_dead/blk_queue_dying/g' \ -e 's/QUEUE_FLAG_DEAD/QUEUE_FLAG_DYING/g'; \ sed -i.tmp -e "s/QUEUE_FLAG_DYING$(printf \\t)*5/QUEUE_FLAG_DYING$(printf \\t)5/g" \ include/linux/blkdev.h; \ sed -i.tmp -e 's/ DEAD/ DYING/g' -e 's/dead queue/a dying queue/' \ -e 's/Dead queue/A dying queue/' block/blk-core.c Signed-off-by: NBart Van Assche <bvanassche@acm.org> Acked-by: NTejun Heo <tj@kernel.org> Cc: James Bottomley <JBottomley@Parallels.com> Cc: Mike Christie <michaelc@cs.wisc.edu> Cc: Jens Axboe <axboe@kernel.dk> Cc: Chanho Min <chanho.min@lge.com> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Jeff Moyer 提交于
In realtime environments, it may be desirable to keep the per-bdi flusher threads from running on certain cpus. This patch adds a cpu_list file to /sys/class/bdi/* to enable this. The default is to tie the flusher threads to the same numa node as the backing device (though I could be convinced to make it a mask of all cpus to avoid a change in behaviour). Thanks to Jeremy Eder for the original idea. Signed-off-by: NJeff Moyer <jmoyer@redhat.com> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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- 03 11月, 2012 1 次提交
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由 Sasha Levin 提交于
This hashtable implementation is using hlist buckets to provide a simple hashtable to prevent it from getting reimplemented all over the kernel. Signed-off-by: NSasha Levin <levinsasha928@gmail.com> [ Merging this now, so that subsystems can start applying Sasha's patches that use this - Linus ] Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 01 11月, 2012 1 次提交
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由 Xiao Guangrong 提交于
After commit b3356bf0 (KVM: emulator: optimize "rep ins" handling), the pieces of io data can be collected and write them to the guest memory or MMIO together Unfortunately, kvm splits the mmio access into 8 bytes and store them to vcpu->mmio_fragments. If the guest uses "rep ins" to move large data, it will cause vcpu->mmio_fragments overflow The bug can be exposed by isapc (-M isapc): [23154.818733] general protection fault: 0000 [#1] SMP DEBUG_PAGEALLOC [ ......] [23154.858083] Call Trace: [23154.859874] [<ffffffffa04f0e17>] kvm_get_cr8+0x1d/0x28 [kvm] [23154.861677] [<ffffffffa04fa6d4>] kvm_arch_vcpu_ioctl_run+0xcda/0xe45 [kvm] [23154.863604] [<ffffffffa04f5a1a>] ? kvm_arch_vcpu_load+0x17b/0x180 [kvm] Actually, we can use one mmio_fragment to store a large mmio access then split it when we pass the mmio-exit-info to userspace. After that, we only need two entries to store mmio info for the cross-mmio pages access Signed-off-by: NXiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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- 29 10月, 2012 2 次提交
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由 Mikulas Patocka 提交于
Use rcu_read_lock_sched / rcu_read_unlock_sched / synchronize_sched instead of rcu_read_lock / rcu_read_unlock / synchronize_rcu. This is an optimization. The RCU-protected region is very small, so there will be no latency problems if we disable preempt in this region. So we use rcu_read_lock_sched / rcu_read_unlock_sched that translates to preempt_disable / preempt_disable. It is smaller (and supposedly faster) than preemptible rcu_read_lock / rcu_read_unlock. Signed-off-by: NMikulas Patocka <mpatocka@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Mikulas Patocka 提交于
This patch introduces new barrier pair light_mb() and heavy_mb() for percpu rw semaphores. This patch fixes a bug in percpu-rw-semaphores where a barrier was missing in percpu_up_write. This patch improves performance on the read path of percpu-rw-semaphores: on non-x86 cpus, there was a smp_mb() in percpu_up_read. This patch changes it to a compiler barrier and removes the "#if defined(X86) ..." condition. From: Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: NMikulas Patocka <mpatocka@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 26 10月, 2012 1 次提交
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由 Will Deacon 提交于
rb_erase_augmented() is a static function annotated with __always_inline. This causes a compile failure when attempting to use the rbtree implementation as a library (e.g. kvm tool): rbtree_augmented.h:125:24: error: expected `=', `,', `;', `asm' or `__attribute__' before `void' Include linux/compiler.h in rbtree_augmented.h so that the __always_inline macro is resolved correctly. Signed-off-by: NWill Deacon <will.deacon@arm.com> Cc: Pekka Enberg <penberg@kernel.org> Reviewed-by: NMichel Lespinasse <walken@google.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 25 10月, 2012 2 次提交
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由 Joe Perches 提交于
The __used attribute prevents gcc from eliminating unnecessary, otherwise optimized away, metadata for debugging logging messages. Remove the __used attribute. Signed-off-by: NJoe Perches <joe@perches.com> Acked-by: NJason Baron <jbaron@redhat.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Yinghai Lu 提交于
We will not map partial pages, so need to make sure memblock allocation will not allocate those bytes out. Also we will use for_each_mem_pfn_range() to loop to map memory range to keep them consistent. Signed-off-by: NYinghai Lu <yinghai@kernel.org> Link: http://lkml.kernel.org/r/CAE9FiQVZirvaBMFYRfXMmWEcHbKSicQEHz4VAwUv0xFCk51ZNw@mail.gmail.comAcked-by: NJacob Shin <jacob.shin@amd.com> Signed-off-by: NH. Peter Anvin <hpa@linux.intel.com> Cc: <stable@vger.kernel.org>
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- 24 10月, 2012 2 次提交
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由 Srivatsa S. Bhat 提交于
The perf_cpu_notifier() macro invokes smp_processor_id() multiple times. Optimize it by using a local variable. Signed-off-by: NSrivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Reviewed-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: peterz@infradead.org Cc: acme@ghostprotocols.net Link: http://lkml.kernel.org/r/20121016075817.3572.76733.stgit@srivatsabhat.in.ibm.comSigned-off-by: NIngo Molnar <mingo@kernel.org>
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由 Srivatsa S. Bhat 提交于
The CPU_STARTING notifiers are supposed to be run with irqs disabled. But the perf_cpu_notifier() macro invokes them without doing that. Fix it. Signed-off-by: NSrivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Reviewed-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: peterz@infradead.org Cc: acme@ghostprotocols.net Link: http://lkml.kernel.org/r/20121016075809.3572.47848.stgit@srivatsabhat.in.ibm.comSigned-off-by: NIngo Molnar <mingo@kernel.org>
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- 23 10月, 2012 2 次提交
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由 Chanwoo Choi 提交于
This patch add platform data for MUIC device to initialize register on probe() call because it should unmask interrupt mask register and initialize some register related to MUIC device. Signed-off-by: NChanwoo Choi <cw00.choi@samsung.com> Signed-off-by: NMyungjoo Ham <myungjoo.ham@samsung.com> Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
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由 Yuchung Cheng 提交于
Add a bit TCPI_OPT_SYN_DATA (32) to the socket option TCP_INFO:tcpi_options. It's set if the data in SYN (sent or received) is acked by SYN-ACK. Server or client application can use this information to check Fast Open success rate. Signed-off-by: NYuchung Cheng <ycheng@google.com> Acked-by: NNeal Cardwell <ncardwell@google.com> Acked-by: NEric Dumazet <edumazet@google.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 22 10月, 2012 1 次提交
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由 anish kumar 提交于
With this change now individual drivers can use standard cable names as below: static const char *arizona_cable[] = { extcon_cable_name[EXTCON_USB], extcon_cable_name[EXTCON_USB_HOST], "CUSTOM_CABLE" NULL, } Signed-off-by: Nanish kumar <anish198519851985@gmail.com> Signed-off-by: NMyungJoo Ham <myungjoo.ham@samsung.com>
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- 20 10月, 2012 2 次提交
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由 Cyrill Gorcunov 提交于
free_pid_ns() operates in a recursive fashion: free_pid_ns(parent) put_pid_ns(parent) kref_put(&ns->kref, free_pid_ns); free_pid_ns thus if there was a huge nesting of namespaces the userspace may trigger avalanche calling of free_pid_ns leading to kernel stack exhausting and a panic eventually. This patch turns the recursion into an iterative loop. Based on a patch by Andrew Vagin. [akpm@linux-foundation.org: export put_pid_ns() to modules] Signed-off-by: NCyrill Gorcunov <gorcunov@openvz.org> Cc: Andrew Vagin <avagin@openvz.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Pavel Emelyanov <xemul@parallels.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Richard Weinberger 提交于
Commit 5ab1c309 ("coredump: pass siginfo_t* to do_coredump() and below, not merely signr") added siginfo_t to linux/coredump.h but forgot to include asm/siginfo.h. This breaks the build for UML/i386. (And any other arch where asm/siginfo.h is not magically preincluded...) In file included from arch/x86/um/elfcore.c:2:0: include/linux/coredump.h:15:25: error: unknown type name 'siginfo_t' make[1]: *** [arch/x86/um/elfcore.o] Error 1 Signed-off-by: NRichard Weinberger <richard@nod.at> Cc: Denys Vlasenko <vda.linux@googlemail.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Amerigo Wang <amwang@redhat.com> Cc: "Jonathan M. Foote" <jmfoote@cert.org> Cc: Roland McGrath <roland@hack.frob.com> Cc: Pedro Alves <palves@redhat.com> Cc: Fengguang Wu <fengguang.wu@intel.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 19 10月, 2012 1 次提交
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由 Lars-Peter Clausen 提交于
Some datasheets use a different unit to specify the channel scale than what IIO expects it to be. This patch adds two helper macros which allow to convert units commonly used in datasheets to IIO units: * acceleration: g -> meter / second**2 * angular velocity: degree (/ second) -> rad (/ second) This makes it much more convenient to specify and also easier to verify a channel's scale attribute. Signed-off-by: NLars-Peter Clausen <lars@metafoo.de> Signed-off-by: NJonathan Cameron <jic23@kernel.org>
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- 18 10月, 2012 4 次提交
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由 Kim Phillips 提交于
drivers/of/irq.c:195:57: warning: restricted __be32 degrades to integer drivers/of/irq.c:196:51: warning: restricted __be32 degrades to integer drivers/of/irq.c:199:57: warning: restricted __be32 degrades to integer drivers/of/irq.c:201:58: warning: restricted __be32 degrades to integer drivers/of/irq.c:470:37: warning: incorrect type in assignment (different modifiers) drivers/of/irq.c:470:37: expected int ( *[usertype] irq_init_cb )( ... ) drivers/of/irq.c:470:37: got void const *const data drivers/of/irq.c:96:5: error: symbol 'of_irq_map_raw' redeclared with different type (originally declared at include/linux/of_irq.h:61) - incompatible argument 2 (different base types) drivers/of/of_pci_irq.c:91:40: warning: incorrect type in argument 2 (different base types) drivers/of/of_pci_irq.c:91:40: expected unsigned int const [usertype] *intspec drivers/of/of_pci_irq.c:91:40: got restricted __be32 *<noident> drivers/of/of_pci_irq.c:91:53: warning: incorrect type in argument 4 (different base types) drivers/of/of_pci_irq.c:91:53: expected unsigned int const [usertype] *addr drivers/of/of_pci_irq.c:91:53: got restricted __be32 *<noident> Signed-off-by: NKim Phillips <kim.phillips@freescale.com> Signed-off-by: NRob Herring <rob.herring@calxeda.com>
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由 Kim Phillips 提交于
drivers/of/address.c:66:29: warning: incorrect type in argument 1 (different base types) drivers/of/address.c:66:29: expected restricted __be32 const [usertype] *cell drivers/of/address.c:66:29: got unsigned int [usertype] *addr drivers/of/address.c:87:32: warning: incorrect type in argument 1 (different base types) drivers/of/address.c:87:32: expected restricted __be32 const [usertype] *cell drivers/of/address.c:87:32: got unsigned int [usertype] *addr drivers/of/address.c:91:30: warning: incorrect type in assignment (different base types) drivers/of/address.c:91:30: expected unsigned int [unsigned] [usertype] <noident> drivers/of/address.c:91:30: got restricted __be32 [usertype] <noident> drivers/of/address.c:92:22: warning: incorrect type in assignment (different base types) drivers/of/address.c:92:22: expected unsigned int [unsigned] [usertype] <noident> drivers/of/address.c:92:22: got restricted __be32 [usertype] <noident> drivers/of/address.c:147:35: warning: incorrect type in argument 1 (different base types) drivers/of/address.c:147:35: expected restricted __be32 const [usertype] *addr drivers/of/address.c:147:35: got unsigned int [usertype] *addr drivers/of/address.c:157:34: warning: incorrect type in argument 1 (different base types) drivers/of/address.c:157:34: expected restricted __be32 const [usertype] *cell drivers/of/address.c:157:34: got unsigned int [usertype] * drivers/of/address.c:256:29: warning: restricted __be32 degrades to integer drivers/of/address.c:256:36: warning: restricted __be32 degrades to integer drivers/of/address.c:262:34: warning: incorrect type in argument 1 (different base types) drivers/of/address.c:262:34: expected restricted __be32 const [usertype] *cell drivers/of/address.c:262:34: got unsigned int [usertype] * drivers/of/address.c:372:41: warning: incorrect type in argument 1 (different base types) drivers/of/address.c:372:41: expected restricted __be32 const [usertype] *cell drivers/of/address.c:372:41: got unsigned int [usertype] *addr drivers/of/address.c:395:53: warning: incorrect type in argument 2 (different base types) drivers/of/address.c:395:53: expected restricted __be32 const [usertype] *addr drivers/of/address.c:395:53: got unsigned int [usertype] *addr drivers/of/address.c:443:50: warning: incorrect type in argument 2 (different base types) drivers/of/address.c:443:50: expected restricted __be32 const [usertype] *addr drivers/of/address.c:443:50: got unsigned int *<noident> drivers/of/address.c:455:49: warning: incorrect type in argument 1 (different base types) drivers/of/address.c:455:49: expected restricted __be32 const [usertype] *cell drivers/of/address.c:455:49: got unsigned int *<noident> drivers/of/address.c:480:60: warning: incorrect type in argument 2 (different base types) drivers/of/address.c:480:60: expected restricted __be32 const [usertype] *addr drivers/of/address.c:480:60: got unsigned int *<noident> drivers/of/address.c:412:5: warning: symbol '__of_translate_address' was not declared. Should it be static? drivers/of/address.c:520:14: error: symbol 'of_get_address' redeclared with different type (originally declared at include/linux/of_address.h:22) - different base types Signed-off-by: NKim Phillips <kim.phillips@freescale.com> Signed-off-by: NRob Herring <rob.herring@calxeda.com>
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由 Olof Johansson 提交于
Fixes build error on s3c6400_defconfig, introduced by commit 06455bbc, "dt/s3c64xx/spi: Use of_get_child_by_name to get a named child". drivers/spi/spi-s3c64xx.c: In function 's3c64xx_get_slave_ctrldata': drivers/spi/spi-s3c64xx.c:838:2: error: implicit declaration of function 'of_get_child_by_name' [-Werror=implicit-function-declaration] Signed-off-by: NOlof Johansson <olof@lixom.net> Signed-off-by: NRob Herring <rob.herring@calxeda.com>
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由 Greg Kroah-Hartman 提交于
There are no users of this macro anymore in the kernel tree, so finally delete it. Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 17 10月, 2012 7 次提交
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由 David Howells 提交于
Signed-off-by: NDavid Howells <dhowells@redhat.com> Acked-by: NArnd Bergmann <arnd@arndb.de> Acked-by: NThomas Gleixner <tglx@linutronix.de> Acked-by: NMichael Kerrisk <mtk.manpages@gmail.com> Acked-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: NDave Jones <davej@redhat.com> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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由 David Howells 提交于
Remove non-UAPI Kbuild files that have become empty as a result of UAPI disintegration. They used to have only header-y lines in them and those have now moved to the Kbuild files in the corresponding uapi/ directories. Possibly these should not be removed but rather have a comment inserted to say they are intentionally left blank. This would make it easier to add generated header lines in future without having to restore the infrastructure. Note that at this point not all the UAPI disintegration parts have been merged, so it is likely that more empty Kbuild files will turn up. It is probably necessary to make the files non-empty to prevent the patch program from automatically deleting them when it reduces them to nothing. Signed-off-by: NDavid Howells <dhowells@redhat.com>
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由 David Howells 提交于
Remove empty conditionals from include/linux/Kbuild as the contents, with new conditionals, have moved to include/uapi/linux/Kbuild. Signed-off-by: NDavid Howells <dhowells@redhat.com>
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由 Aaro Koskinen 提交于
Delete soon-obsolete e-mail address. Signed-off-by: NAaro Koskinen <aaro.koskinen@nokia.com> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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由 David Howells 提交于
It seems I accidentally switched the guard on linux/elf-fdpic.h from #ifdef __KERNEL__ to #ifndef __KERNEL__ when attempting to expand the guarded region to cover the elf_fdpic_params struct when doing the UAPI split - with the result that the struct became unavailable to kernel code. Move incorrectly guarded bits back to the kernelspace header. Whilst we're at it, the __KERNEL__ guards can be deleted as they're no longer necessary. Reported-by: NFengguang Wu <fengguang.wu@intel.com> Reported-by: NLars-Peter Clausen <lars@metafoo.de> Signed-off-by: NDavid Howells <dhowells@redhat.com> cc: Fengguang Wu <fengguang.wu@intel.com> cc: Lars-Peter Clausen <lars@metafoo.de> cc: uclinux-dev@uclinux.org Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Al Viro 提交于
Had not been used for more than a decade and half; it used to be a part of (in-kernel) ->select() API and it has been pining for fjords since 2.1.23pre1. This is an ex-parrot... Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 David Howells 提交于
There are some bits of linux/fs.h which are only used within the kernel and shouldn't be in the UAPI. Move these from uapi/linux/fs.h into linux/fs.h. Signed-off-by: NDavid Howells <dhowells@redhat.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 13 10月, 2012 8 次提交
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由 David Howells 提交于
Signed-off-by: NDavid Howells <dhowells@redhat.com> Acked-by: NArnd Bergmann <arnd@arndb.de> Acked-by: NThomas Gleixner <tglx@linutronix.de> Acked-by: NMichael Kerrisk <mtk.manpages@gmail.com> Acked-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: NDave Jones <davej@redhat.com>
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由 David Howells 提交于
Signed-off-by: NDavid Howells <dhowells@redhat.com> Acked-by: NArnd Bergmann <arnd@arndb.de> Acked-by: NThomas Gleixner <tglx@linutronix.de> Acked-by: NMichael Kerrisk <mtk.manpages@gmail.com> Acked-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: NDave Jones <davej@redhat.com>
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由 David Howells 提交于
It seems that was linux/blk_types.h incorrectly exported to fix up some missing bits required by the exported parts of linux/fs.h (READ, WRITE, READA, etc.). So unexport linux/blk_types.h and unexport the relevant bits of linux/fs.h. Signed-off-by: NDavid Howells <dhowells@redhat.com> cc: Jens Axboe <jaxboe@fusionio.com> cc: Tejun Heo <tj@kernel.org> cc: Al Viro <viro@ZenIV.linux.org.uk>
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由 David Howells 提交于
Unexport part of linux/ppp-comp.h as userspace can't make use of that bit. Signed-off-by: NDavid Howells <dhowells@redhat.com> cc: Paul Mackerras <paulus@samba.org> cc: David Miller <davem@davemloft.net>
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由 Jeff Layton 提交于
In the common case where a name is much smaller than PATH_MAX, an extra allocation for struct filename is unnecessary. Before allocating a separate one, try to embed the struct filename inside the buffer first. If it turns out that that's not long enough, then fall back to allocating a separate struct filename and redoing the copy. Signed-off-by: NJeff Layton <jlayton@redhat.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Jeff Layton 提交于
Keep a pointer to the audit_names "slot" in struct filename. Have all of the audit_inode callers pass a struct filename ponter to audit_inode instead of a string pointer. If the aname field is already populated, then we can skip walking the list altogether and just use it directly. Signed-off-by: NJeff Layton <jlayton@redhat.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Jeff Layton 提交于
...and fix up the callers. For do_file_open_root, just declare a struct filename on the stack and fill out the .name field. For do_filp_open, make it also take a struct filename pointer, and fix up its callers to call it appropriately. For filp_open, add a variant that takes a struct filename pointer and turn filp_open into a wrapper around it. Signed-off-by: NJeff Layton <jlayton@redhat.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Jeff Layton 提交于
Currently, if we call getname() on a userland string more than once, we'll get multiple copies of the string and multiple audit_names records. Add a function that will allow the audit_names code to satisfy getname requests using info from the audit_names list, avoiding a new allocation and audit_names records. Signed-off-by: NJeff Layton <jlayton@redhat.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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