- 10 9月, 2005 4 次提交
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由 Christoph Hellwig 提交于
The SAS transport class contains common code to deal with SAS HBAs, an aproximated representation of SAS topologies in the driver model, and various sysfs attributes to expose these topologies and managment interfaces to userspace. In addition to the basic SCSI core objects this transport class introduces two additional intermediate objects: The SAS PHY as represented by struct sas_phy defines an "outgoing" PHY on a SAS HBA or Expander, and the SAS remote PHY represented by struct sas_rphy defines an "incoming" PHY on a SAS Expander or end device. Note that this is purely a software concept, the underlying hardware for a PHY and a remote PHY is the exactly the same. There is no concept of a SAS port in this code, users can see what PHYs form a wide port based on the port_identifier attribute, which is the same for all PHYs in a port. This submission doesn't handle hot-plug addition or removal of SAS devices and thus doesn't do scanning in a workqueue yet, that will be added in phase2 after this submission. In a third phase I will add additional managment infrastructure. I think this submission is ready for 2.6.14, but additional comments are of course very welcome. I'd like to thanks James Smart a lot for his very useful input on the design. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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由 Douglas Gilbert 提交于
The soon to be released smartmontools 5.34 uses the READ DEFECT DATA command on SCSI disks. A disk that has defect list entries (or worse, an increasing number of them) is at risk. Currently the first invocation of smartctl causes this: scsi: unknown opcode 0x37 message to appear the console and in the log. The READ DEFECT DATA SCSI command does not change the state of a disk. Its opcode (0x37) is valid for SBC devices (e.g. disks) and SMC-2 devices (media changers) where it is called INITIALIZE STATUS ELEMENT WITH RANGE and again doesn't change the external state of the device. Changelog: - mark SCSI opcode 0x37 (READ DEFECT DATA) as safe_for_read Signed-off-by: NDouglas Gilbert <dougg@torque.net> Acked-by: NJens Axboe <axboe@suse.de> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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由 Douglas Gilbert 提交于
Further to the problem discussed in this post: http://marc.theaimsgroup.com/?l=linux-scsi&m=112540053711489&w=2 It seems that the sg driver does not need to set the VM_IO flag on pages that it memory maps to the user space since they are not from the IO space. Ahmed Teirelbar <ahmed.teirelbar@adic.com> wants the facility and has tested this patch as I have without adverse effects. The oops protection is still important. Some users really did try and use dio transfers from the sg driver to memory mapped IO space (on a video capture card if my memory serves) during the lk 2.4 series. I'm not sure how successful it was but that will now be politely refused in lk 2.6.13+ . Changelog: - set the page flags for sg's reserved buffer mmap-ed to the user space to VM_RESERVED (rather than VM_RESERVED | VM_IO ) Signed-off-by: NDouglas Gilbert <dougg@torque.net> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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由 James Bottomley 提交于
Actually, just one problem and one cosmetic fix: 1) We need to dequeue for the loop and kill case (it seems easiest simply to dequeue in the scsi_kill_request() routine) 2) There's no real need to drop the queue lock. __scsi_done() is lock agnostic, so since there's no requirement, let's just leave it in to avoid any locking issues. Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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- 09 9月, 2005 4 次提交
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由 James Bottomley 提交于
From: Alan Stern <stern@rowland.harvard.edu> This patch (as559b) adds a new routine, scsi_unprep_request, which gets called every place a request is requeued. (That includes scsi_queue_insert as well as scsi_requeue_command.) It also changes scsi_kill_requests to make it call __scsi_done with result equal to DID_NO_CONNECT << 16. (I'm not sure if it's necessary to call scsi_init_cmd_errh here; maybe you can check on that.) Finally, the patch changes the return value from scsi_end_request, to avoid returning a stale pointer in the case where the request was requeued. Fortunately the return value is used in only place, and the change actually simplified it. Signed-off-by: NAlan Stern <stern@rowland.harvard.edu> Rejections fixed up and Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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由 Neil Brown 提交于
If a filesystem, while writing out data, decides that it is good to issue a cache flush on a SCSI drive (or other 'sd' device), it will call blkdev_issue_flush which calls ->issue_flush_fn which is scsi_issue_flush_fn. This calls sd_issue_flush which calls sd_sync_cache, which calls scsi_execute_request. This will (as sshdr != NULL) call kmalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL) If memory is tight, the presence of GFP_KERNEL may cause write requests to be sent to some filesystem to free up memory, however if that filesystem is waiting for the issue_flush_fn to complete, you could get a deadlock. I wonder if it might be more appropriate to use GFP_NOIO as in the following patch. I wonder if it might be even more appropriate to cope better with a kmalloc failure, especially as in this use, sd_sync_cache only will use the sense information to print out a more informative error message. Signed-off-by: NNeil Brown <neilb@suse.de> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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由 Alan Stern 提交于
This patch (as544) adds a private entry point to scsi_remove_device, for use when callers already own the scan_mutex. The appropriate callers are modified to use the new entry point. Signed-off-by: NAlan Stern <stern@rowland.harvard.edu> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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由 Alan Stern 提交于
This patch (as543) adds a private entry point to scsi_scan_target, for use when the caller already owns the scan_mutex, and updates the kerneldoc for that routine (which was badly out-of-date). It converts scsi_scan_channel to use the new entry point. Lastly, it modifies scsi_get_host_dev to make it acquire the scan_mutex, necessary since the routine adds a new scsi_device even if it doesn't do any actual scanning. Signed-off-by: NAlan Stern <stern@rowland.harvard.edu> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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- 08 9月, 2005 32 次提交
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由 Linus Torvalds 提交于
With the previous commit that introduces the klist enhancements, we can now re-do 2b7d6a8c again.
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由 James Bottomley 提交于
The problem is that klists claim to provide semantics for safe traversal of lists which are being modified. The failure case is when traversal of a list causes element removal (a fairly common case). The issue is that although the list node is refcounted, if it is embedded in an object (which is universally the case), then the object will be freed regardless of the klist refcount leading to slab corruption because the klist iterator refers to the prior element to get the next. The solution is to make the klist take and release references to the embedding object meaning that the embedding object won't be released until the list relinquishes the reference to it. (akpm: fast-track this because it's needed for the 2.6.13 scsi merge) Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Linus Torvalds 提交于
Revert commit 2b7d6a8c. The "fix" was known to not even compile. Duh. That's not a fix. That's just stupid. Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Linus Torvalds 提交于
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由 Linus Torvalds 提交于
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由 Linus Torvalds 提交于
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由 Linus Torvalds 提交于
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由 Linus Torvalds 提交于
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由 Linus Torvalds 提交于
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由 Linus Torvalds 提交于
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由 viro@ZenIV.linux.org.uk 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 viro@ZenIV.linux.org.uk 提交于
Now that asm-powerpc/* is using ifdefs on __powerpc64__ we need to add it to CHECKFLAGS on ppc64. Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 viro@ZenIV.linux.org.uk 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 viro@ZenIV.linux.org.uk 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 viro@ZenIV.linux.org.uk 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 viro@ZenIV.linux.org.uk 提交于
CARD_... in hisax are all used with #if; CARD_FN_ENTERNOW_PCI lacks define to 0 if corresponding config option is not set. Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 viro@ZenIV.linux.org.uk 提交于
NDEBUG and NDEBUG_ABORT are almost always used as integers in NCR5380; added define to 0 if they are not defined, switched lone ifdef NDEBUG into if. Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 viro@ZenIV.linux.org.uk 提交于
All uses of ADDRLEN are comparisons with 64 (it's an address width). added define to 32 (again, we only care about comparisons with 64) if not defined. Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 viro@ZenIV.linux.org.uk 提交于
elf_aux is userland code; it uses symbol (ELF_CLASS) that doesn't exist in userland headers; pulled into kernel-offsets.h, switched elf_aux to using it. Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 viro@ZenIV.linux.org.uk 提交于
parcelfarce is dead... Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 viro@ZenIV.linux.org.uk 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 viro@ZenIV.linux.org.uk 提交于
A piece of the UML stubs patch got lost - it has Killed STUBS_CFLAGS - it's not needed and the only remaining use had been gratitious - it only polluted CFLAGS in description and does remove it in arch/um/Makefile-x86_64, but forgets to do the same in i386 counterpart. Lost chunk follows: Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 viro@ZenIV.linux.org.uk 提交于
Sanitized and fixed floppy dependencies: split the messy dependencies for BLK_DEV_FD by introducing a new symbol (ARCH_MAY_HAVE_PC_FDC), making BLK_DEV_FD depend on that one and taking declarations of ARCH_MAY_HAVE_PC_FDC to arch/*/Kconfig. While we are at it, fixed several obvious cases when BLK_DEV_FD should have been excluded (architectures lacking asm/floppy.h are *not* going to have floppy.c compile, let alone work). If you can come up with better name for that ("this architecture might have working PC-compatible floppy disk controller"), you are more than welcome - just s/ARCH_MAY_HAVE_PC_FDC/your_prefered_name/g in the patch below... Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 viro@zenIV.linux.org.uk 提交于
u64 is not uintptr_t; unsigned long is... Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Linus Torvalds 提交于
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由 Linus Torvalds 提交于
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由 Michael Krufky 提交于
Most of the patch is whitespace cleanup, but more importantly, this patch checks to see whether a callback is set before calling it. On cx88 boards (currently the only boards using lgdt330x in 2.6.13) every callback is set. However, newer drivers currently in development leave a callback undefined, and lgdt330x must not call it if it isn't defined. Signed-off-by: NPatrick Boettcher <pb@linuxtv.org> Signed-off-by: NMichael Krufky <mkrufky@m1k.net> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Michael Krufky 提交于
Patrick Keene wrote to the linux-dvb list, asking where in menuconfig he can enable dvb-bt8xx for his AVerMedia DVB card. I pointed the following out to him: config DVB_BT8XX tristate "Nebula/Pinnacle PCTV/Twinhan PCI cards" It has been agreed upon that this description is extremely misleading. This patch changes the one-liner description text of dvb-bt8xx to something more meaningful, and adds AVerMedia to the detailed description. Signed-off-by: NMichael Krufky <mkrufky@m1k.net> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Ralf Baechle 提交于
Rewrite of the Indycam / VINO video v4l2 drivers for the SGI Indy. Signed-off-by: NRalf Baechle <ralf@linux-mips.org> Signed-off-by: NMikael Nousiainen <tmnousia@cc.hut.fi> Cc: <video4linux-list@redhat.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Miklos Szeredi 提交于
Fix http://bugzilla.kernel.org/show_bug.cgi?id=4857 When pivot_root is called from an init script in an initramfs environment, it causes a circular reference in the mount tree. The cause of this is that pivot_root() is not prepared to handle pivoting an unattached mount. In an initramfs environment, rootfs is the root of the namespace, and so it is not attached. This patch fixes this and related problems, by returning -EINVAL if either the current root or the new root is detached. Signed-off-by: NMiklos Szeredi <miklos@szeredi.hu> Acked-by: NAl Viro <viro@parcelfarce.linux.theplanet.co.uk> Cc: <bigfish@asmallpond.org> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Keshavamurthy Anil S 提交于
This patch fixes a race condition where in system used to hang or sometime crash within minutes when kprobes are inserted on ISR routine and a task routine. The fix has been stress tested on i386, ia64, pp64 and on x86_64. To reproduce the problem insert kprobes on schedule() and do_IRQ() functions and you should see hang or system crash. Signed-off-by: NAnil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Signed-off-by: NAnanth N Mavinakayanahalli <ananth@in.ibm.com> Acked-by: NPrasanna S Panchamukhi <prasanna@in.ibm.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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