- 09 6月, 2009 1 次提交
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由 Tejun Heo 提交于
CUSE enables implementing character devices in userspace. With recent additions of ioctl and poll support, FUSE already has most of what's necessary to implement character devices. All CUSE has to do is bonding all those components - FUSE, chardev and the driver model - nicely. When client opens /dev/cuse, kernel starts conversation with CUSE_INIT. The client tells CUSE which device it wants to create. As the previous patch made fuse_file usable without associated fuse_inode, CUSE doesn't create super block or inodes. It attaches fuse_file to cdev file->private_data during open and set ff->fi to NULL. The rest of the operation is almost identical to FUSE direct IO case. Each CUSE device has a corresponding directory /sys/class/cuse/DEVNAME (which is symlink to /sys/devices/virtual/class/DEVNAME if SYSFS_DEPRECATED is turned off) which hosts "waiting" and "abort" among other things. Those two files have the same meaning as the FUSE control files. The only notable lacking feature compared to in-kernel implementation is mmap support. Signed-off-by: NTejun Heo <tj@kernel.org> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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- 28 4月, 2009 14 次提交
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由 Tejun Heo 提交于
Export the following symbols for CUSE. fuse_conn_put() fuse_conn_get() fuse_conn_kill() fuse_send_init() fuse_do_open() fuse_sync_release() fuse_direct_io() fuse_do_ioctl() fuse_file_poll() fuse_request_alloc() fuse_get_req() fuse_put_request() fuse_request_send() fuse_abort_conn() fuse_dev_release() fuse_dev_operations Signed-off-by: NTejun Heo <tj@kernel.org> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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由 Tejun Heo 提交于
Update fuse_conn_init() such that it doesn't take @sb and move bdi registration into a separate function. Also separate out fuse_conn_kill() from fuse_put_super(). These will be used to implement cuse. Signed-off-by: NTejun Heo <tj@kernel.org> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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由 Miklos Szeredi 提交于
Use ff->fc and ff->nodeid instead of file->f_dentry->d_inode in the fuse_file_poll() implementation. This prepares this function for use by CUSE, where the inode is not owned by a fuse filesystem. Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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由 Miklos Szeredi 提交于
Create a helper for sending an IOCTL request that doesn't use a struct inode. This prepares this function for use by CUSE, where the inode is not owned by a fuse filesystem. Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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由 Miklos Szeredi 提交于
Make fuse_sync_release() a generic helper function that doesn't need a struct inode pointer. This makes it suitable for use by CUSE. Change return value of fuse_release_common() from int to void. Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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由 Miklos Szeredi 提交于
Create a helper for sending an OPEN request that doesn't need a struct inode pointer. Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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由 Miklos Szeredi 提交于
Move setting ff->fh, ff->nodeid and file->private_data outside fuse_finish_open(). Add ->open_flags member to struct fuse_file. This simplifies the argument passing to fuse_finish_open() and fuse_release_fill(), and paves the way for creating an open helper that doesn't need an inode pointer. Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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由 Miklos Szeredi 提交于
Use ff->fc and ff->nodeid instead of passing down the inode. This prepares this function for use by CUSE, where the inode is not owned by a fuse filesystem. Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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由 Miklos Szeredi 提交于
Add new members ->fc and ->nodeid to struct fuse_file. This will aid in converting functions for use by CUSE, where the inode is not owned by a fuse filesystem. Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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由 Miklos Szeredi 提交于
Move code operating on the inode out from fuse_direct_io(). This prepares this function for use by CUSE, where the inode is not owned by a fuse filesystem. Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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由 Miklos Szeredi 提交于
Move out code from fuse_write_fill() which is not common to all callers. Remove two function arguments which become unnecessary. Also remove unnecessary memset(), the request is already initialized to zero. Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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由 Miklos Szeredi 提交于
Use struct path instead of separate dentry and vfsmount in req->misc.release. Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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由 Tejun Heo 提交于
* fuse_file_alloc() was structured in weird way. The success path was split between else block and code following the block. Restructure the code such that it's easier to read and modify. * Unindent success path of fuse_release_common() to ease future changes. Signed-off-by: NTejun Heo <tj@kernel.org> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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由 Miklos Szeredi 提交于
Destroy bdi on error in fuse_fill_super(). This was an omission from commit 26c36791 "fuse: destroy bdi on umount", which moved the bdi_destroy() call from fuse_conn_put() to fuse_put_super(). Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz> CC: stable@kernel.org
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- 22 4月, 2009 25 次提交
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由 Linus Torvalds 提交于
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由 Arjan van de Ven 提交于
There is currently only one way for userspace to say "wait for my storage device to get ready for the modules I just loaded": to load the scsi_wait_scan module. Expectations of userspace are that once this module is loaded, all the (storage) devices for which the drivers were loaded before the module load are present. Now, there are some issues with the implementation, and the async stuff got caught in the middle of this: The existing code only waits for the scsy async probing to finish, but it did not take into account at all that probing might not have begun yet. (Russell ran into this problem on his computer and the fix works for him) This patch fixes this more thoroughly than the previous "fix", which had some bad side effects (namely, for kernel code that wanted to wait for the scsi scan it would also do an async sync, which would deadlock if you did it from async context already.. there's a report about that on lkml): The patch makes the module first wait for all device driver probes, and then it will wait for the scsi parallel scan to finish. Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Tested-by: NRussell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Jonathan Corbet 提交于
Fix a comment typo in slow-work.h ...a trivial mistake, but it will mess up kerneldoc if nothing else. Signed-off-by: NJonathan Corbet <corbet@lwn.net> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 David Howells 提交于
Collect the DECLARE/DEFINE declarations together in linux/percpu-defs.h so that they're in one place, and give them descriptive comments, particularly the SHARED_ALIGNED variant. It would be nice to collect these in linux/percpu.h, but that's not possible without sorting out the severe #include recursion between the x86 arch headers and the general headers (and possibly other arches too). Signed-off-by: NDavid Howells <dhowells@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 David Howells 提交于
In non-SMP mode, the variable section attribute specified by DECLARE_PER_CPU() does not agree with that specified by DEFINE_PER_CPU(). This means that architectures that have a small data section references relative to a base register may throw up linkage errors due to too great a displacement between where the base register points and the per-CPU variable. On FRV, the .h declaration says that the variable is in the .sdata section, but the .c definition says it's actually in the .data section. The linker throws up the following errors: kernel/built-in.o: In function `release_task': kernel/exit.c:78: relocation truncated to fit: R_FRV_GPREL12 against symbol `per_cpu__process_counts' defined in .data section in kernel/built-in.o kernel/exit.c:78: relocation truncated to fit: R_FRV_GPREL12 against symbol `per_cpu__process_counts' defined in .data section in kernel/built-in.o To fix this, DECLARE_PER_CPU() should simply apply the same section attribute as does DEFINE_PER_CPU(). However, this is made slightly more complex by virtue of the fact that there are several variants on DEFINE, so these need to be matched by variants on DECLARE. Signed-off-by: NDavid Howells <dhowells@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable由 Linus Torvalds 提交于
* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: Btrfs: fix btrfs fallocate oops and deadlock Btrfs: use the right node in reada_for_balance Btrfs: fix oops on page->mapping->host during writepage Btrfs: add a priority queue to the async thread helpers Btrfs: use WRITE_SYNC for synchronous writes
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git://jdelvare.pck.nerim.net/jdelvare-2.6由 Linus Torvalds 提交于
* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: go7007: Convert to the new i2c device binding model
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由 Roel Kluin 提交于
`!' has a higher precedence than `&', parentheses are misplaced. Signed-off-by: NRoel Kluin <roel.kluin@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Acked-by: NSonic Zhang <sonic.zhang@analog.com> Cc: Bryan Wu <cooloney@kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 KOSAKI Motohiro 提交于
Commit a6dc60f8 ("vmscan: rename sc.may_swap to may_unmap") removed the may_swap flag, but memcg had used it as a flag for "we need to use swap?", as the name indicate. And in the current implementation, memcg cannot reclaim mapped file caches when mem+swap hits the limit. re-introduce may_swap flag and handle it at get_scan_ratio(). This patch doesn't influence any scan_control users other than memcg. Signed-off-by: NKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: NDaisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Acked-by: NJohannes Weiner <hannes@cmpxchg.org> Cc: Balbir Singh <balbir@linux.vnet.ibm.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Dave Jiang 提交于
Error found by Jeff Haran. The error detect register is 0s when no errors are detected. The check code is incorrect, so reverse check sense. Reported-by: NJeff Haran <jharan@Brocade.COM> Signed-off-by: NDave Jiang <djiang@mvista.com> Signed-off-by: NDoug Thompson <dougthompson@xmission.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: NKumar Gala <galak@kernel.crashing.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Eric Paris 提交于
Addresses http://bugzilla.kernel.org/show_bug.cgi?id=13133 ODEBUG: object is on stack, but not annotated ------------[ cut here ]------------ WARNING: at lib/debugobjects.c:253 __debug_object_init+0x1f3/0x276() Hardware name: VMware Virtual Platform Modules linked in: mptspi(+) mptscsih mptbase scsi_transport_spi ext3 jbd mbcache Pid: 540, comm: insmod Not tainted 2.6.28-mm1 #2 Call Trace: [<c042c51c>] warn_slowpath+0x74/0x8a [<c0469600>] ? start_critical_timing+0x96/0xb7 [<c060c8ea>] ? _spin_unlock_irqrestore+0x2f/0x3c [<c0446fad>] ? trace_hardirqs_off_caller+0x18/0xaf [<c044704f>] ? trace_hardirqs_off+0xb/0xd [<c060c8ea>] ? _spin_unlock_irqrestore+0x2f/0x3c [<c042cb84>] ? release_console_sem+0x1a5/0x1ad [<c05013e6>] __debug_object_init+0x1f3/0x276 [<c0501494>] debug_object_init+0x13/0x17 [<c0433c56>] init_timer+0x10/0x1a [<e08e5b54>] mpt_config+0x1c1/0x2b7 [mptbase] [<e08e3b82>] ? kmalloc+0x8/0xa [mptbase] [<e08e3b82>] ? kmalloc+0x8/0xa [mptbase] [<e08e6fa2>] mpt_do_ioc_recovery+0x950/0x1212 [mptbase] [<c04496c2>] ? __lock_acquire+0xa69/0xacc [<c060c8f1>] ? _spin_unlock_irqrestore+0x36/0x3c [<c060c3af>] ? _spin_unlock_irq+0x22/0x26 [<c04f2d8b>] ? string+0x2b/0x76 [<c04f310e>] ? vsnprintf+0x338/0x7b3 [<c04496c2>] ? __lock_acquire+0xa69/0xacc [<c060c8ea>] ? _spin_unlock_irqrestore+0x2f/0x3c [<c04496c2>] ? __lock_acquire+0xa69/0xacc [<c044897d>] ? debug_check_no_locks_freed+0xeb/0x105 [<c060c8f1>] ? _spin_unlock_irqrestore+0x36/0x3c [<c04488bc>] ? debug_check_no_locks_freed+0x2a/0x105 [<c0446b8c>] ? lock_release_holdtime+0x43/0x48 [<c043f742>] ? up_read+0x16/0x29 [<c05076f8>] ? pci_get_slot+0x66/0x72 [<e08e89ca>] mpt_attach+0x881/0x9b1 [mptbase] [<e091c8e5>] mptspi_probe+0x11/0x354 [mptspi] Noticing that every caller of mpt_config has its CONFIGPARMS struct declared on the stack and thus the &pCfg->timer is always on the stack I changed init_timer() to init_timer_on_stack() and it seems to have shut up..... Cc: "Moore, Eric Dean" <Eric.Moore@lsil.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Thomas Gleixner <tglx@linutronix.de> Acked-by: N"Desai, Kashyap" <Kashyap.Desai@lsi.com> Cc: <stable@kernel.org> [2.6.29.x] Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Robin Holt 提交于
For an upcoming distro release, we need to have the xp kernel module loadable even when not on UV equipment. The xpc module will not load. This will allow one set of modules dependent upon xp to work on either UV or non-UV equipment. Signed-off-by: NRobin Holt <holt@sgi.com> Signed-off-by: NJack Steiner <steiner@sgi.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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由 WANG Cong 提交于
Got this warning from Kconfig: boolean symbol INPUT tested for 'm'? test forced to 'n' because INPUT is tristate, not bool. Signed-off-by: NWANG Cong <xiyou.wangcong@gmail.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 David Howells 提交于
Insert PCI root bus resources for the FRV-based MB93090 development kit motherboard. This is required because the CPU's window onto the PCI bus address space is considerably smaller than the CPU's full address space and non-PCI devices lie outside of the PCI window that we might want to access. Without this patch, the PCI root bus uses the platform-level bus resources, and these are then confined to the PCI window, thus making platform_device_add() reject devices outside of this window. Signed-off-by: NDavid Howells <dhowells@redhat.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Krzysztof Halasa 提交于
With no IRQ available/defined, RTC-CMOS driver prints something like: rtc0: alarms up to one no, y3k, 114 bytes nvram ^^^^ I guess the following is a bit easier to understand: rtc0: no alarms, y3k, 114 bytes nvram Signed-off-by: NKrzysztof Halasa <khc@pm.waw.pl> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 David Brownell 提交于
This is a doc-only patch which I hope will reduce the number of spi_master controller driver patches starting out with a common implementation bug. (As in: almost every spi_master driver I see starts out with its version of this bug. Sigh.) It just re-emphasizes that the setup() method may be called for one device while a transfer is active on another ... which means that most driver implementations shouldn't touch any registers. Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Robert P. J. Day 提交于
Add a parenthesized string of "H8300" for more convenient searchability in the MAINTAINERS file. Signed-off-by: NRobert P. J. Day <rpjday@crashcourse.ca> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Joe Perches <joe@perches.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Matt Mackall 提交于
Impact: make more work for myself Signed-off-by: NMatt Mackall <mpm@selenic.com> Cc: David Woodhouse <dwmw2@infradead.org> Acked-by: NPaul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Roel Kluin 提交于
On line 944 the return value of flush() is considered as a boolean, but limit reaches -1 upon timeout which evaluates to true. On 540, 594, 720 the same occurs for wait_ssp_rx_stall() On 536 the same occurs for wait_dma_channel_stop() Signed-off-by: NRoel Kluin <roel.kluin@gmail.com> Acked-by: NEric Miao <eric.miao@marvell.com> Cc: David Brownell <david-b@pacbell.net> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Joe Perches 提交于
Signed-off-by: NJoe Perches <joe@perches.com> Acked-by: NPekka Enberg <penberg@cs.helsinki.fi> Acked-by: NEduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Joe Perches 提交于
There are no more arches with suspend support using these directories. Signed-off-by: NJoe Perches <joe@perches.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Daniel Ribeiro 提交于
If DMA is enabled, any spi_sync call after suspend/resume would block forever, because DRCMR is lost on suspend. This patch restores DRCMR to the same values set by probe. Signed-off-by: NDaniel Ribeiro <drwyrm@gmail.com> Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Helge Deller 提交于
On parisc machines, which don't have HIL, removing the hp_sdc module panics the kernel. Fix this by returning early in hp_sdc_exit() if no HP SDC controller was found. Add functionality to probe for the hp_sdc_mlc kernel module (which takes care of the upper layer HIL functionality on parisc) after two seconds. This is needed to get all the other HIL drivers (keyboard / mouse/ ..) drivers automatically loaded by udev later as well. Signed-off-by: NHelge Deller <deller@gmx.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Frans Pop <elendil@planet.nl> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Grant Grundler <grundler@parisc-linux.org> Acked-by: NDmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 KAMEZAWA Hiroyuki 提交于
mm->owner should be accessed with rcu_dereference(). Reported-by: NKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: NKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Acked-by: NBalbir Singh <balbir@linux.vnet.ibm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Akinobu Mita 提交于
This fixes the following BUG: # mount -o size=MM -t hugetlbfs none /huge hugetlbfs: Bad value 'MM' for mount option 'size=MM' ------------[ cut here ]------------ kernel BUG at fs/super.c:996! Due to BUG_ON(!mnt->mnt_sb); in vfs_kern_mount(). Also, remove unused #include <linux/quotaops.h> Cc: William Irwin <wli@holomorphy.com> Cc: <stable@kernel.org> Signed-off-by: NAkinobu Mita <akinobu.mita@gmail.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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