- 22 4月, 2010 1 次提交
-
-
由 Roland Dreier 提交于
Several RDMA user-access drivers have file_operations structures with no .llseek method set. None of the drivers actually do anything with f_pos, so this means llseek is essentially a NOP, instead of returning an error as leaving other file_operations methods unimplemented would do. This is mostly harmless, except that a NULL .llseek means that default_llseek() is used, and this function grabs the BKL, which we would like to avoid. Since llseek does nothing useful on these files, we would like it to return an error to userspace instead of silently grabbing the BKL and succeeding. For nearly all of the file types, we take the belt-and-suspenders approach of setting the .llseek method to no_llseek and also calling nonseekable_open(); the exception is the uverbs_event files, which are created with anon_inode_getfile(), which already sets f_mode the same way as nonseekable_open() would. This work is motivated by Arnd Bergmann's bkl-removal tree. Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
- 10 4月, 2010 9 次提交
-
-
git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband由 Linus Torvalds 提交于
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: IB/mlx4: Check correct variable for allocation failure RDMA/nes: Correct cap.max_inline_data assignment in nes_query_qp() RDMA/cm: Set num_paths when manually assigning path records IB/cm: Fix device_create() return value check
-
git://git390.marist.edu/pub/scm/linux-2.6由 Linus Torvalds 提交于
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: [S390] Update default configuration. [S390] nss: add missing .previous statement to asm function [S390] increase default size of vmalloc area [S390] s390: disable change bit override [S390] fix io_return critical section cleanup [S390] sclp_async: potential buffer overflow [S390] arch/s390/kernel: Add missing unlock
-
git://git.kernel.dk/linux-2.6-block由 Linus Torvalds 提交于
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: (34 commits) cfq-iosched: Fix the incorrect timeslice accounting with forced_dispatch loop: Update mtime when writing using aops block: expose the statistics in blkio.time and blkio.sectors for the root cgroup backing-dev: Handle class_create() failure Block: Fix block/elevator.c elevator_get() off-by-one error drbd: lc_element_by_index() never returns NULL cciss: unlock on error path cfq-iosched: Do not merge queues of BE and IDLE classes cfq-iosched: Add additional blktrace log messages in CFQ for easier debugging i2o: Remove the dangerous kobj_to_i2o_device macro block: remove 16 bytes of padding from struct request on 64bits cfq-iosched: fix a kbuild regression block: make CONFIG_BLK_CGROUP visible Remove GENHD_FL_DRIVERFS block: Export max number of segments and max segment size in sysfs block: Finalize conversion of block limits functions block: Fix overrun in lcm() and move it to lib vfs: improve writeback_inodes_wb() paride: fix off-by-one test drbd: fix al-to-on-disk-bitmap for 4k logical_block_size ...
-
git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6由 Linus Torvalds 提交于
* 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (29 commits) drm/nouveau: bail out of auxch transaction if we repeatedly recieve defers drm/nv50: implement gpio set/get routines drm/nv50: parse/use some more de-magiced parts of gpio table entries drm/nouveau: store raw gpio table entry in bios gpio structs drm/nv40: Init some tiling-related PGRAPH state. drm/nv50: Add NVA3 support in ctxprog/ctxvals generator. drm/nv50: another dodgy DP hack drm/nv50: punt hotplug irq handling out to workqueue drm/nv50: preserve an unknown SOR_MODECTRL value for DP encoders drm/nv50: Allow using the NVA3 new compute class. drm/nv50: cleanup properly if PDISPLAY init fails drm/nouveau: fixup the init failure paths some more drm/nv50: fix instmem init on IGPs if stolen mem crosses 4GiB mark drm/nv40: add LVDS table quirk for Dell Latitude D620 drm/nv40: rework lvds table parsing drm/nouveau: detect vram amount once, and save the value drm/nouveau: remove some unused members from drm_nouveau_private drm/nouveau: Make use of TTM busy_placements. drm/nv50: add more 0x100c80 flushy magic drm/nv50: fix fbcon when framebuffer above 4GiB mark ...
-
由 David Howells 提交于
radix_tree_tag_get() is not safe to use concurrently with radix_tree_tag_set() or radix_tree_tag_clear(). The problem is that the double tag_get() in radix_tree_tag_get(): if (!tag_get(node, tag, offset)) saw_unset_tag = 1; if (height == 1) { int ret = tag_get(node, tag, offset); may see the value change due to the action of set/clear. RCU is no protection against this as no pointers are being changed, no nodes are being replaced according to a COW protocol - set/clear alter the node directly. The documentation in linux/radix-tree.h, however, says that radix_tree_tag_get() is an exception to the rule that "any function modifying the tree or tags (...) must exclude other modifications, and exclude any functions reading the tree". The problem is that the next statement in radix_tree_tag_get() checks that the tag doesn't vary over time: BUG_ON(ret && saw_unset_tag); This has been seen happening in FS-Cache: https://www.redhat.com/archives/linux-cachefs/2010-April/msg00013.html To this end, remove the BUG_ON() from radix_tree_tag_get() and note in various comments that the value of the tag may change whilst the RCU read lock is held, and thus that the return value of radix_tree_tag_get() may not be relied upon unless radix_tree_tag_set/clear() and radix_tree_delete() are excluded from running concurrently with it. Reported-by: NRomain DEGEZ <romain.degez@smartjog.com> Signed-off-by: NDavid Howells <dhowells@redhat.com> Acked-by: NNick Piggin <npiggin@suse.de> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
由 Pekka Enberg 提交于
As suggested by Linus, fix up kmem_ptr_validate() to handle non-kernel pointers more graciously. The patch changes kmem_ptr_validate() to use the newly introduced kern_ptr_validate() helper to check that a pointer is a valid kernel pointer before we attempt to convert it into a 'struct page'. Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Matt Mackall <mpm@selenic.com> Cc: Nick Piggin <npiggin@suse.de> Signed-off-by: NPekka Enberg <penberg@cs.helsinki.fi> Acked-by: NChristoph Lameter <cl@linux-foundation.org> Acked-by: NDavid Rientjes <rientjes@google.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
由 Pekka Enberg 提交于
As suggested by Linus, introduce a kern_ptr_validate() helper that does some sanity checks to make sure a pointer is a valid kernel pointer. This is a preparational step for fixing SLUB kmem_ptr_validate(). Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Christoph Lameter <cl@linux-foundation.org> Cc: David Rientjes <rientjes@google.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Matt Mackall <mpm@selenic.com> Cc: Nick Piggin <npiggin@suse.de> Signed-off-by: NPekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
由 Linus Torvalds 提交于
This reverts commit ba168fc3. It changes user-visible sysfs interfaces, and breaks some existing user space applications which apparently rely on the fact that the output does not contain the "0x" prefix. Requested-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Acked-by: NKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Acked-by: NWu Fengguang <fengguang.wu@intel.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
由 Roland Dreier 提交于
-
- 09 4月, 2010 30 次提交
-
-
由 Martin Schwidefsky 提交于
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
-
由 Heiko Carstens 提交于
The savesys_ipl_nss asm function is put into the .init.text section however it is missing a ".previous" section which would restore the previous section. Luckily all functions in early.c are init functions so it doesn't matter currently. Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
-
由 Martin Schwidefsky 提交于
The default size of the vmalloc area is currently 1 GB. The memory resource controller uses about 10 MB of vmalloc space per gigabyte of memory. That turns a system with more than ~100 GB memory unbootable with the default vmalloc size. It costs us nothing to increase the default size to some more adequate value, e.g. 128 GB. Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
-
由 Christian Borntraeger 提交于
commit 6a985c61 ([S390] s390: use change recording override for kernel mapping) deactivated the change bit recording for the kernel mapping to improve the performance. This works most of the time, but there are cases (e.g. kernel runs in home space, futex atomic compare xcmg) where we modify user memory with the kernel mapping instead of the user mapping. Instead of fixing these cases, this patch just deactivates change bit override to avoid future problems with other kernel code that might use the kernel mapping for user memory. CC: stable@kernel.org Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
-
由 Martin Schwidefsky 提交于
If a machine check interrupts the io interrupt handler on one of the instructions between io_return and io_leave the critical section cleanup code will move the return psw to io_work_loop. By doing that the switch from the asynchronous interrupt stack to the process stack is skipped. If e.g. TIF_NEED_RESCHED is set things break because the scheduler is called with the asynchronous interrupts stack. Moving the psw back to io_return instead fixes the problem. Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
-
由 Dan Carpenter 提交于
"len" hasn't been properly range checked so we shouldn't use it as an array offset. This can only be written to by root but it would still be annoying to accidentally write more than 3 characters and corrupt your memory. Signed-off-by: NDan Carpenter <error27@gmail.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
-
由 Julia Lawall 提交于
In the default case the lock is not unlocked. The return is converted to a goto, to share the unlock at the end of the function. A simplified version of the semantic patch that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r exists@ expression E1; identifier f; @@ f (...) { <+... * spin_lock_irq (E1,...); ... when != E1 * return ...; ...+> } // </smpl> Signed-off-by: NJulia Lawall <julia@diku.dk> Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
-
由 Divyesh Shah 提交于
When CFQ dispatches requests forcefully due to a barrier or changing iosched, it runs through all cfqq's dispatching requests and then expires each queue. However, it does not activate a cfqq before flushing its IOs resulting in using stale values for computing slice_used. This patch fixes it by calling activate queue before flushing reuqests from each queue. This is useful mostly for barrier requests because when the iosched is changing it really doesnt matter if we have incorrect accounting since we're going to break down all structures anyway. We also now expire the current timeslice before moving on with the dispatch to accurately account slice used for that cfqq. Signed-off-by: Divyesh Shah<dpshah@google.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
-
由 Dave Airlie 提交于
* 'nouveau/for-airlied' of ../drm-nouveau-next: (21 commits) drm/nouveau: bail out of auxch transaction if we repeatedly recieve defers drm/nv50: implement gpio set/get routines drm/nv50: parse/use some more de-magiced parts of gpio table entries drm/nouveau: store raw gpio table entry in bios gpio structs drm/nv40: Init some tiling-related PGRAPH state. drm/nv50: Add NVA3 support in ctxprog/ctxvals generator. drm/nv50: another dodgy DP hack drm/nv50: punt hotplug irq handling out to workqueue drm/nv50: preserve an unknown SOR_MODECTRL value for DP encoders drm/nv50: Allow using the NVA3 new compute class. drm/nv50: cleanup properly if PDISPLAY init fails drm/nouveau: fixup the init failure paths some more drm/nv50: fix instmem init on IGPs if stolen mem crosses 4GiB mark drm/nv40: add LVDS table quirk for Dell Latitude D620 drm/nv40: rework lvds table parsing drm/nouveau: detect vram amount once, and save the value drm/nouveau: remove some unused members from drm_nouveau_private drm/nouveau: Make use of TTM busy_placements. drm/nv50: add more 0x100c80 flushy magic drm/nv50: fix fbcon when framebuffer above 4GiB mark ...
-
由 Ben Skeggs 提交于
There's one known case where we never stop recieving DEFER, and loop here forever. Lets not do that.. Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
-
由 Ben Skeggs 提交于
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
-
由 Ben Skeggs 提交于
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
-
由 Ben Skeggs 提交于
And use our own version of the GPIO table for the INIT_GPIO opcode. Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
-
由 Francisco Jerez 提交于
Fixes garbled 3D on an nv46 card. Reported-by: NFrancesco Marella <francesco.marella@gmail.com> Signed-off-by: NFrancisco Jerez <currojerez@riseup.net> Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
-
由 Marcin Kościelnicki 提交于
Signed-off-by: NMarcin Kościelnicki <koriakin@0x04.net> Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
-
由 Ben Skeggs 提交于
Allows *some* DP cards to keep working in some corner cases that most people shouldn't hit. I hit it all the time with development, so this can stay for now. Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
-
由 Ben Skeggs 提交于
On DP outputs we'll likely end up running vbios init tables here, which may sleep. Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
-
由 Ben Skeggs 提交于
This value interacts with some registers we don't currently know how to program properly ourselves. The default of 5 that we were using matches what the VBIOS on early DP cards do, but later ones use 6, which would cause nouveau to program an incorrect mode on these chips. Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
-
由 Marcin Kościelnicki 提交于
Signed-off-by: NMarcin Kościelnicki <koriakin@0x04.net> Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
-
由 Ben Skeggs 提交于
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
-
由 Ben Skeggs 提交于
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
-
由 Ben Skeggs 提交于
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
-
由 Ben Skeggs 提交于
Should fix: https://bugzilla.redhat.com/show_bug.cgi?id=505132 https://bugzilla.redhat.com/show_bug.cgi?id=543091 https://bugzilla.redhat.com/show_bug.cgi?id=530425 https://bugs.edge.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/ +bug/539730 Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
-
由 Ben Skeggs 提交于
All indications seem to be that the version 0x30 table should be handled the same way as 0x40 (as used on G80), at least for the parts that we currently try use. This commit cleans up the parsing to make it clearer about what we're actually trying to achieve, and unifies the 0x30/0x40 parsing. Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
-
由 Ben Skeggs 提交于
As opposed to repeatedly reading the amount back from the GPU every time we need to know the VRAM size. We should now fail to load gracefully on detecting no VRAM, rather than something potentially messy happening. Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
-
由 Ben Skeggs 提交于
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
-
由 Francisco Jerez 提交于
Previously we were filling it the same as "placements", but in some cases there're valid alternatives that we were ignoring completely. Keeping a back-up memory type helps on several low-mem situations. Signed-off-by: NFrancisco Jerez <currojerez@riseup.net> Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
-
由 Ben Skeggs 提交于
Fixes the !vbo_fifo path in the 3D driver on certain chipsets. Still not really any good idea of what exactly the magic achieves, but it makes things work. While we're at it, in the PCIEGART path, flush on unbinding also. Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
-
由 Ben Skeggs 提交于
This can't actually happen right now, but lets fix it anyway. Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
-
由 Marcin Kościelnicki 提交于
Signed-off-by: NMarcin Kościelnicki <koriakin@0x04.net> Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
-