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path: root/drivers/scsi/sg.c
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* blktrace: Add blktrace ioctls to SCSI generic devicesChristof Schmitt2008-01-28
| | | | | | | | | | | | | | Since the SCSI layer uses the request queues from the block layer, blktrace can also be used to trace the requests to all SCSI devices (like SCSI tape drives), not only disks. The only missing part is the ioctl interface to start and stop tracing. This patch adds the SETUP, START, STOP and TEARDOWN ioctls from blktrace to the sg device files. With this change, blktrace can be used for SCSI devices like for disks, e.g.: blktrace -d /dev/sg1 -o - | blkparse -i - Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* [SCSI] sg: fix /proc/scsi/sg/devices when no SCSI devicesTony Battersby2008-01-23
| | | | | | | | | | | | | | The patch "[SCSI] sg: use idr to replace static arrays" in 2.6.24-rc1 causes a bogus line to appear in /proc/scsi/sg/devices containing "-1 -1 -1 -1 -1 -1 -1 -1 -1" when there are no SCSI devices in the system. In 2.6.23, /proc/scsi/sg/devices is empty when there are no SCSI devices in the system. A similar problem exists with /proc/scsi/sg/device_strs. The following patch restores the behavior of 2.6.23. Signed-off-by: Tony Battersby <tonyb@cybernetics.com> Acked-by: Douglas Gilbert <dougg@torque.net> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] sg: handle class_device_create failure properlyFUJITA Tomonori2008-01-23
| | | | | | Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Douglas Gilbert <dougg@torque.net> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] sg: set class_data after successFUJITA Tomonori2008-01-23
| | | | | | | | | If cdev_add fails in sg_add, sg_remove crashes since class_data is bogus. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Douglas Gilbert <dougg@torque.net> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] sg: Only print SCSI data direction warning once for a commandAndi Kleen2008-01-23
| | | | | | | | | | | | | | | | | | When I use cdparanoia my logs get spammed a lot by printk: 464 messages suppressed. sg_write: data in/out 30576/30576 bytes for SCSI command 0xbe--guessing data in; program cdparanoia not setting count and/or reply_len properly printk: 1078 messages suppressed. and many more of those. With this patch the message is only printed once for a command in a row. v1->v2: Prevent rate limit messages too (pointed out by jejb) Signed-off-by: Andi Kleen <ak@suse.de> Acked-by: Douglas Gilbert <dougg@torque.net> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* Initialise scatter/gather list in sg driverAnton Blanchard2007-10-29
| | | | | | | | | | | | | | | | | | | After turning on DEBUG_SG I hit a fail: kernel BUG at include/linux/scatterlist.h:50! sg_build_indirect sg_build_reserve sg_open chrdev_open __dentry_open do_filp_open do_sys_open We should initialise the sg list when we allocate it in sg_build_sgat. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* SG: Change sg_set_page() to take length and offset argumentJens Axboe2007-10-24
| | | | | | | | | | Most drivers need to set length and offset as well, so may as well fold those three lines into one. Add sg_assign_page() for those two locations that only needed to set the page, where the offset/length is set outside of the function context. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* [SG] Update drivers to use sg helpersJens Axboe2007-10-22
| | | | Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* scsi generic: sg chaining supportJens Axboe2007-10-16
| | | | Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* [SCSI] sg: use idr to replace static arraysJames Bottomley2007-10-12
| | | | | | | | | | | | sg uses a scheme to reallocate a single contiguous array of all its pointers for lookup and management. This didn't matter too much when sg could only attach 256 nodes, but now the maximum has been bumped up to 32k we're starting to push the limits of the maximum allocatable contiguous memory. The solution to this is to eliminate the static array and do everything via idr, which this patch does. Acked-by: Douglas Gilbert <dougg@torque.net> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] sg: increase sglist_len of the sg_scatter_hold structureFUJITA Tomonori2007-10-12
| | | | | | | | | | | | | | unsigned short is too small for sizeof(struct scatterlist) * min(q->max_hw_segments, q->max_phys_segments). This fixes memory leak with 4096 segments since 16 (likely sg size with x86) * 4096 sets sglist_len to zero. This might not happen without sg chaining support. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Douglas Gilbert <dougg@torque.net> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] sg: remove unnecessary checkEric Sesterhenn2007-05-28
| | | | | | | | | | | coverity spotted this (cid #758). All callers dereference sfp, so we dont need this check. In addition to this, we dereference it earlier in the function. Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de> Acked-by: Douglas Gilbert <dougg@torque.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* header cleaning: don't include smp_lock.h when not usedRandy Dunlap2007-05-08
| | | | | | | | | | | | Remove includes of <linux/smp_lock.h> where it is not used/needed. Suggested by Al Viro. Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc, sparc64, and arm (all 59 defconfigs). Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [SCSI] sg: cap reserved_size values at max_sectorsAlan Stern2007-04-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch (as857) modifies the SG_GET_RESERVED_SIZE and SG_SET_RESERVED_SIZE ioctls in the sg driver, capping the values at the device's request_queue's max_sectors value. This will permit cdrecord to obtain a legal value for the maximum transfer length, fixing Bugzilla #7026. The patch also caps the initial reserved_size value. There's no reason to have a reserved buffer larger than max_sectors, since it would be impossible to use the extra space. The corresponding ioctls in the block layer are modified similarly, and the initial value for the reserved_size is set as large as possible. This will effectively make it default to max_sectors. Note that the actual value is meaningless anyway, since block devices don't have a reserved buffer. Finally, the BLKSECTGET ioctl is added to sg, so that there will be a uniform way for users to determine the actual max_sectors value for any raw SCSI transport. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: Jens Axboe <jens.axboe@oracle.com> Acked-by: Douglas Gilbert <dougg@torque.net> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] sg: fix incorrect last scatg lengthDouglas Gilbert2006-11-09
| | | | | | | | | | | | | | | For certain LLDs the sg driver can cause on oops when the transfer length is large and not a multiple of PAGE_SIZE. ChangeLog: - correct the length of the last scatter gather list element. - fix some printk()s that have the wrong function name. Signed-off-by: Douglas Gilbert <dougg@torque.net> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] sg: fixes for large page_sizeDouglas Gilbert2006-09-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This sg driver patch addresses the problem with larger page sizes reported by Brian King in this post: http://marc.theaimsgroup.com/?l=linux-scsi&m=115867718623631&w=2 Some other related matters are also addressed. Some of these prevent oopses when the SG_SCATTER_SZ or scatter_elem_sz are set to inappropriate values. The scatter_elem_sz has been tested up to 4 MB which should make the largest data transfer with one SCSI command, 32 MB less one block, achievable with a relatively small number of elements in the scatter gather list. ChangeLog: - add scatter_elem_sz boot time parameter and sysfs module parameter that is initialized to SG_SCATTER_SZ - the driver will then adjust scatter_elem_sz to be the max(given(scatter_elem_sz), PAGE_SIZE) It will also round it up, if necessary, to be a power of two - clean up sg.h header, correct bad urls and some statements that are no longer valid - make the def_reserved_size sysfs module attribute writable Signed-off-by: Douglas Gilbert <dougg@torque.net> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] sg: fix incorrect page problemDouglas Gilbert2006-08-26
| | | | | | | | | There's a problem where sg is executing a ->nopage operation on a compound page, it actually calls get_page() on the first page in the compound rather than the page which is being mapped. The fix is to select the correct page by indexing into the compound. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* Merge ../scsi-misc-2.6James Bottomley2006-07-03
|\ | | | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/scsi/nsp32.c drivers/scsi/pcmcia/nsp_cs.c Removal of randomness flag conflicts with SA_ -> IRQF_ global replacement. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * [SCSI] sg.c: Fix bad error handling inIshai Rabinovitz2006-06-30
| | | | | | | | | | | | | | | | | | | | | | | | | | I got a NULL derefrence in cdev_del+1 when called from sg_remove. By looking at the code of sg_add, sg_alloc and sg_remove (all in drivers/scsi/sg.c) I found out that sg_add is calling sg_alloc but if it fails afterwards it does not deallocate the space that was allocated in sg_alloc and the redundant entry has NULL in cdev. When sg_remove is being called, it tries to perform cdev_del to this NULL cdev and fails. Signed-off-by: Ishai Rabinovitz <ishai@mellanox.co.il> Acked-by: Douglas Gilbert <dougg@torque.net> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | Remove obsolete #include <linux/config.h>Jörn Engel2006-06-30
|/ | | | | Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [SCSI] drivers/scsi: Use ARRAY_SIZE macroTobias Klauser2006-06-10
| | | | | | | | | Use ARRAY_SIZE macro instead of sizeof(x)/sizeof(x[0]) and remove duplicates of the macro. Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] sg: fix leak when dio setup failsDouglas Gilbert2006-04-13
| | | | | | | | | | | | | | when the sg driver is unable to setup direct IO, free that scatter gather list prior to falling back to indirect IO Further to this thread started by Bryan Holty: http://marc.theaimsgroup.com/?l=linux-scsi&m=114306885116728&w=2 Here is the reworked patch again. This time it has been tested with a program provided by Bryan. Signed-off-by: Douglas Gilbert <dougg@torque.net> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] fix sg leak when scsi_execute_async failsMike Christie2006-04-13
| | | | | | | | | Doug found a bug where if scsi_execute_async fails, we are leaking sg resources. scsi_do_req never failed so we did not have to handle that case before. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] unify SCSI_IOCTL_SEND_COMMAND implementationsChristoph Hellwig2006-04-13
| | | | | | | | | | | | | | | | | | | | | | We currently have two implementations of this obsolete ioctl, one in the block layer and one in the scsi code. Both of them have drawbacks. This patch kills the scsi layer version after updating the block version with the missing bits: - argument checking - use scatterlist I/O - set number of retries based on the submitted command This is the last user of non-S/G I/O except for the gdth driver, so getting this in ASAP and through the scsi tree would be nie to kill the non-S/G I/O path. Jens, what do you think about adding a check for non-S/G I/O in the midlayer? Thanks to Or Gerlitz for testing this patch. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6Linus Torvalds2006-03-22
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (138 commits) [SCSI] libata: implement minimal transport template for ->eh_timed_out [SCSI] eliminate rphy allocation in favour of expander/end device allocation [SCSI] convert mptsas over to end_device/expander allocations [SCSI] allow displaying and setting of cache type via sysfs [SCSI] add scsi_mode_select to scsi_lib.c [SCSI] 3ware 9000 add big endian support [SCSI] qla2xxx: update MAINTAINERS [SCSI] scsi: move target_destroy call [SCSI] fusion - bump version [SCSI] fusion - expander hotplug suport in mptsas module [SCSI] fusion - exposing raid components in mptsas [SCSI] fusion - memory leak, and initializing fields [SCSI] fusion - exclosure misspelled [SCSI] fusion - cleanup mptsas event handling functions [SCSI] fusion - removing target_id/bus_id from the VirtDevice structure [SCSI] fusion - static fix's [SCSI] fusion - move some debug firmware event debug msgs to verbose level [SCSI] fusion - loginfo header update [SCSI] add scsi_reprobe_device [SCSI] megaraid_sas: fix extended timeout handling ...
| * Merge ../linux-2.6James Bottomley2006-03-14
| |\
| * | [SCSI] MODULE_ALIAS_{BLOCK,CHAR}DEV_MAJOR for drivers/scsiRene Herman2006-03-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add device-major aliases in drivers/scsi, allowing kmod autoload: MODULE_ALIAS_CHARDEV_MAJOR(SCSI_CHANGER_MAJOR) MODULE_ALIAS_CHARDEV_MAJOR(OSST_MAJOR) MODULE_ALIAS_CHARDEV_MAJOR(SCSI_TAPE_MAJOR) MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_CDROM_MAJOR) MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISKN_MAJOR) Signed-off-by: Andrew Morton <akpm@osdl.org> Acked-by: Kai Makisara <kai.makisara@kolumbus.fi> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * | [SCSI] Remove devfs support from the SCSI subsystemGreg KH2006-02-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As devfs has been disabled from the kernel tree for a number of months now (5 to be exact), here's a patch against 2.6.16-rc1-git1 that removes support for it from the SCSI subsystem. The patch also removes the scsi_disk devfs_name field as it's no longer needed. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * | [SCSI] SCSI core kmalloc2kzallocJes Sorensen2006-02-27
| | | | | | | | | | | | | | | | | | | | | | | | Change the core SCSI code to use kzalloc rather than kmalloc+memset where possible. Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | | [PATCH] sg: use compound pagesNick Piggin2006-03-22
| |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sg increments the refcount of constituent pages in its higher order memory allocations when they are about to be mapped by userspace. This is done so the subsequent get_page/put_page when doing the mapping and unmapping does not free the page. Move over to the preferred way, that is, using compound pages instead. This fixes a whole class of possible obscure bugs where a get_user_pages on a constituent page may outlast the user mappings or even the driver. Signed-off-by: Nick Piggin <npiggin@suse.de> Cc: Hugh Dickins <hugh@veritas.com> Cc: Douglas Gilbert <dougg@torque.net> Cc: James Bottomley <James.Bottomley@steeleye.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [SCSI] sg: Remove aha1542 hackBrian King2006-02-27
|/ | | | | | | | | | | | Remove a hack in the sg driver that alters the total buffer length for SG_IO commands to ensure buffers are not odd byte lengths. This breaks on the ipr driver since it requires the request_bufflen to equal the length specified in the cdb. The block layer SG_IO code does not appear to have this hack. Signed-off-by: Douglas Gilbert <dougg@torque.net> Signed-off-by: Brian King <brking@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [PATCH] sg gfp_t annotationsAl Viro2006-02-07
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [SCSI] Prevent scsi_execute_async from guessing cdb lengthbrking@us.ibm.com2006-01-26
| | | | | | | | | | | | | | When the scsi_execute_async interface was added it ended up reducing the flexibility of userspace to send arbitrary scsi commands through sg using SG_IO. The SG_IO interface allows userspace to specify the CDB length. This is now ignored in scsi_execute_async and it is guessed using the COMMAND_SIZE macro, which is not always correct, particularly for vendor specific commands. This patch adds a cmd_len parameter to the scsi_execute_async interface to allow the caller to specify the length of the CDB. Signed-off-by: Brian King <brking@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [PATCH] Fix sg_page_malloc() memsetHugh Dickins2006-01-09
| | | | | | | | | sg_page_malloc should clear the data buffer, not that extent of mem_map. This fixes Jesper's sg_page_free "Bad page states" Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [SCSI] convert sg to scsi_execute_asyncMike Christie2005-12-14
| | | | | | | | | | | | | | | | | | | | Convert sg to always send scatterlists, and kill scsi_request usage. TODO: - move DIO code to common place or make block layers usable for ULDs. - move buffer allocation code to common place for all ULDs to use. And make buffer allocation code obey all queue limits so we can find out about problems before calling scsi_execute_async. Currently, sg.c could allocate a buffer that is too large, and send the request to scsi_execute_async. scsi_execute_async will then check it against all the queue limits and return a failure in this case. It would nicer to know about the queue limit violation right away. - move indirect (copy_to/from_user) paths commone place or make block layers usable for ULDs. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] sg: fix a bug in st_map_user_pages failure pathHugh Dickins2005-12-02
| | | | | | | | | | | sg's st_map_user_pages is modelled on an earlier version of st's sgl_map_user_pages, and has the same bug: if get_user_pages got some but not all of the pages, then those got were released, but the positive res code returned implied that they were still to be freed. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Douglas Gilbert <dougg@torque.net> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] sg and st unmap_user_pages allow PageReservedHugh Dickins2005-12-02
| | | | | | | | | | | | | | | | 2.6.15-rc1 made sg's st_unmap_user_pages and st's sgl_unmap_user_pages BUG on a PageReserved page. But that's wrong: they could be unmapping the ZERO_PAGE, which is marked PG_reserved; and perhaps others (while get_user_pages is still permitted on VM_PFNMAP areas - that may change). More change is needed here: sg claims to dirty even pages written from, and st claims not to dirty even pages read into; and SetPageDirty is not adequate for this nowadays. Fixes to those follow in a later patch: for the moment just fix the 2.6.15 regression. Signed-off-by: Hugh Dickins <hugh@veritas.com> Acked-by: Nick Piggin <npiggin@suse.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [PATCH] changing CONFIG_LOCALVERSION rebuilds too much, for no good reasonOlaf Hering2005-11-09
| | | | | | | | | | | | | | | | | | | | | This patch removes almost all inclusions of linux/version.h. The 3 #defines are unused in most of the touched files. A few drivers use the simple KERNEL_VERSION(a,b,c) macro, which is unfortunatly in linux/version.h. There are also lots of #ifdef for long obsolete kernels, this was not touched. In a few places, the linux/version.h include was move to where the LINUX_VERSION_CODE was used. quilt vi `find * -type f -name "*.[ch]"|xargs grep -El '(UTS_RELEASE|LINUX_VERSION_CODE|KERNEL_VERSION|linux/version.h)'|grep -Ev '(/(boot|coda|drm)/|~$)'` search pattern: /UTS_RELEASE\|LINUX_VERSION_CODE\|KERNEL_VERSION\|linux\/\(utsname\|version\).h Signed-off-by: Olaf Hering <olh@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] kfree cleanup: drivers/scsiJesper Juhl2005-11-07
| | | | | | | | | | | | This is the drivers/scsi/ part of the big kfree cleanup patch. Remove pointless checks for NULL prior to calling kfree() in drivers/scsi/. Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Acked-by: Kai Makisara <kai.makisara@kolumbus.fi> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge by HandJames Bottomley2005-11-04
|\ | | | | | | | | | | | | Conflicts in dec_esp.c (Thanks Bacchus), scsi_transport_iscsi.c and scsi_transport_fc.h Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * [SCSI] move the mid-layer printk's over to shost/starget/sdev_printkJames Bottomley2005-10-28
| | | | | | | | | | | | | | | | | | This should eliminate (at least in the mid layer) to make numeric assumptions about any of the enumeration variables. As a side effect, it will also make all the messages consistent and line us up nicely for the error logging strategy (if it ever shows itself again). Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | Merge master.kernel.org:/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds2005-10-30
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| * | [PATCH] Use sg_set_buf/sg_init_one where applicableDavid Hardeman2005-10-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch uses sg_set_buf/sg_init_one in some places where it was duplicated. Signed-off-by: David Hardeman <david@2gen.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: Greg KH <greg@kroah.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Garzik <jgarzik@pobox.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* | | [PATCH] core remove PageReservedNick Piggin2005-10-30
|/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove PageReserved() calls from core code by tightening VM_RESERVED handling in mm/ to cover PageReserved functionality. PageReserved special casing is removed from get_page and put_page. All setting and clearing of PageReserved is retained, and it is now flagged in the page_alloc checks to help ensure we don't introduce any refcount based freeing of Reserved pages. MAP_PRIVATE, PROT_WRITE of VM_RESERVED regions is tentatively being deprecated. We never completely handled it correctly anyway, and is be reintroduced in future if required (Hugh has a proof of concept). Once PageReserved() calls are removed from kernel/power/swsusp.c, and all arch/ and driver code, the Set and Clear calls, and the PG_reserved bit can be trivially removed. Last real user of PageReserved is swsusp, which uses PageReserved to determine whether a struct page points to valid memory or not. This still needs to be addressed (a generic page_is_ram() should work). A last caveat: the ZERO_PAGE is now refcounted and managed with rmap (and thus mapcounted and count towards shared rss). These writes to the struct page could cause excessive cacheline bouncing on big systems. There are a number of ways this could be addressed if it is an issue. Signed-off-by: Nick Piggin <npiggin@suse.de> Refcount bug fix for filemap_xip.c Signed-off-by: Carsten Otte <cotte@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | Merge ../bleed-2.6Greg KH2005-10-28
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| * [PATCH] gfp_t: drivers/scsiAl Viro2005-10-28
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] Driver Core: fix up all callers of class_device_create()Greg Kroah-Hartman2005-10-28
| | | | | | | | | | | | | | | | The previous patch adding the ability to nest struct class_device changed the paramaters to the call class_device_create(). This patch fixes up all in-kernel users of the function. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | [PATCH] Driver core: pass interface to class interface methodsDmitry Torokhov2005-10-28
|/ | | | | | | | | | | Driver core: pass interface to class intreface methods Pass interface as argument to add() and remove() class interface methods. This way a subsystem can implement generic add/remove handlers and then call interface-specific ones. Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] proc_mkdir() should be used to create procfs directoriesAl Viro2005-09-29
| | | | | | | | A bunch of create_proc_dir_entry() calls creating directories had crept in since the last sweep; converted to proc_mkdir(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [SCSI] fix oops on usb storage device disconnectJames Bottomley2005-09-19
| | | | | | | | | We fix the oops by enforcing the host state model. There have also been two extra states added: SHOST_CANCEL_RECOVERY and SHOST_DEL_RECOVERY so we can take the model through host removal while the recovery thread is active. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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