aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/block
Commit message (Collapse)AuthorAge
* [PATCH] slab: remove SLAB_ATOMICChristoph Lameter2006-12-07
| | | | | | | | SLAB_ATOMIC is an alias of GFP_ATOMIC Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge branch 'master' of ↵David Howells2006-12-05
|\ | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: drivers/ata/libata-scsi.c include/linux/libata.h Futher merge of Linus's head and compilation fixups. Signed-Off-By: David Howells <dhowells@redhat.com>
| * [POWERPC] iSeries: improve viodasd initialisationStephen Rothwell2006-12-04
| | | | | | | | | | | | | | | | | | On error, make sure that we undo all necessary operations. This also gets rid of a must_check warning. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | WorkStruct: make allyesconfigDavid Howells2006-11-22
| | | | | | | | | | | | Fix up for make allyesconfig. Signed-Off-By: David Howells <dhowells@redhat.com>
* | WorkStruct: Pass the work_struct pointer instead of context dataDavid Howells2006-11-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pass the work_struct pointer to the work function rather than context data. The work function can use container_of() to work out the data. For the cases where the container of the work_struct may go away the moment the pending bit is cleared, it is made possible to defer the release of the structure by deferring the clearing of the pending bit. To make this work, an extra flag is introduced into the management side of the work_struct. This governs auto-release of the structure upon execution. Ordinarily, the work queue executor would release the work_struct for further scheduling or deallocation by clearing the pending bit prior to jumping to the work function. This means that, unless the driver makes some guarantee itself that the work_struct won't go away, the work function may not access anything else in the work_struct or its container lest they be deallocated.. This is a problem if the auxiliary data is taken away (as done by the last patch). However, if the pending bit is *not* cleared before jumping to the work function, then the work function *may* access the work_struct and its container with no problems. But then the work function must itself release the work_struct by calling work_release(). In most cases, automatic release is fine, so this is the default. Special initiators exist for the non-auto-release case (ending in _NAR). Signed-Off-By: David Howells <dhowells@redhat.com>
* | WorkStruct: Merge the pending bit into the wq_data pointerDavid Howells2006-11-22
| | | | | | | | | | | | | | | | Reclaim a word from the size of the work_struct by folding the pending bit and the wq_data pointer together. This shouldn't cause misalignment problems as all pointers should be at least 4-byte aligned. Signed-Off-By: David Howells <dhowells@redhat.com>
* | WorkStruct: Typedef the work function prototypeDavid Howells2006-11-22
|/ | | | | | | | | Define a type for the work function prototype. It's not only kept in the work_struct struct, it's also passed as an argument to several functions. This makes it easier to change it. Signed-Off-By: David Howells <dhowells@redhat.com>
* aoe: Add forgotten NULL at end of attribute list in aoeblk.cDennis Stosberg2006-11-16
| | | | | | | | | This caused the system to stall when the aoe module was loaded. The error was introduced in commit 4ca5224f3ea4779054d96e885ca9b3980801ce13 Signed-off-by: Dennis Stosberg <dennis@stosberg.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] cpqarray: fix iostatJens Axboe2006-11-14
| | | | | | | cpqarray needs to call disk_stat_add() for iostat to work. Signed-off-by: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] cciss: fix iostatJens Axboe2006-11-14
| | | | | | | cciss needs to call disk_stat_add() for iostat to work. Signed-off-by: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] cciss: fix printk format warningRandy Dunlap2006-10-28
| | | | | | | | | | | Fix printk format warnings: drivers/block/cciss.c:2000: warning: long long int format, long unsigned int arg (arg 2) drivers/block/cciss.c:2035: warning: long long int format, long unsigned int arg (arg 2) Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: Mike Miller <mike.miller@hp.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] cciss: Fix warnings (and bug on 1TB discs)Matthew Wilcox2006-10-21
| | | | | | | | | | | | | | CCISS was producing warnings about shifts being greater than the size of the type and pointers being of incompatible type. Turns out this is because it's calling do_div on a 32-bit quantity. Upon further investigation, the sector_t total_size is being assigned to an int, and then we're calling do_div on that int. Obviously, sector_div is called for here, and I took the chance to refactor the code a little. Signed-off-by: Matthew Wilcox <matthew@wil.cx> Acked-by: Mike Miller <mike.miller@hp.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* aoe: fix sysfs_create_file warningsGreg Kroah-Hartman2006-10-18
| | | | | | | | | | | | Moved the attributes into a group, making the compiler be quiet about ignoring the return value of the file create calls. This also also fixed a bug when removing the files, which were not symlinks. Cc: "Ed L. Cashin" <ecashin@coraid.com> Cc: Alan Cox <alan@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* aoe: revert printk macrosEd L. Cashin2006-10-18
| | | | | | | | | | | This patch addresses the concern that the aoe driver should not introduce unecessary conventions that must be learned by the reader. It reverts patch 6. Signed-off-by: "Ed L. Cashin" <ecashin@coraid.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* aoe: update driver versionEd L. Cashin2006-10-18
| | | | | | | | | Update aoe driver version number to 32. Signed-off-by: "Ed L. Cashin" <ecashin@coraid.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* aoe: remove sysfs commentEd L. Cashin2006-10-18
| | | | | | | | | Remove unecessary comment. Signed-off-by: "Ed L. Cashin" <ecashin@coraid.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* aoe: use bio->bi_idxEd L. Cashin2006-10-18
| | | | | | | | | Instead of starting with bio->bi_io_vec, use the offset in bio->bi_idx. Signed-off-by: "Ed L. Cashin" <ecashin@coraid.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* aoe: module parameter for device timeoutEd L. Cashin2006-10-18
| | | | | | | | | | | | | The aoe_deadsecs module parameter sets the number of seconds that elapse before a nonresponsive AoE device is marked as dead. This is runtime settable in sysfs or settable with a module load or kernel boot parameter. Signed-off-by: "Ed L. Cashin" <ecashin@coraid.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* aoe: zero copy write 2 of 2Ed L. Cashin2006-10-18
| | | | | | | | | | Avoid memory copy on writes. (This patch follows patch 4.) Signed-off-by: "Ed L. Cashin" <ecashin@coraid.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* aoe: improve retransmission heuristicsEd L. Cashin2006-10-18
| | | | | | | | | Add a dynamic minimum timer for better retransmission behavior. Signed-off-by: "Ed L. Cashin" <ecashin@coraid.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* aoe: jumbo frame support 2 of 2Ed L. Cashin2006-10-18
| | | | | | | | | | Add support for jumbo ethernet frames. (This patch follows patch 5.) Signed-off-by: "Ed L. Cashin" <ecashin@coraid.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* aoe: clean up printks via macrosEd L. Cashin2006-10-18
| | | | | | | | | | Use simple macros to clean up the printks. (This patch is reverted by the 14th patch to follow.) Signed-off-by: "Ed L. Cashin" <ecashin@coraid.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* aoe: jumbo frame support 1 of 2Ed L. Cashin2006-10-18
| | | | | | | | | | Add support for jumbo ethernet frames. (This patch depends on patch 7 to follow.) Signed-off-by: "Ed L. Cashin" <ecashin@coraid.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* aoe: zero copy write 1 of 2Ed L. Cashin2006-10-18
| | | | | | | | | | | | | | | | | | | | | | | Avoid memory copy on writes. (This patch depends on fixes in patch 9 to follow.) Although skb->len should not be set when working with linear skbuffs, the skb->tail pointer maintained by skb_put/skb_trim is not relevant to what happens when the skb_fill_page_desc function is called. This issue was raised without comment in linux-kernel and netdev earlier this month: http://thread.gmane.org/gmane.linux.kernel/446474/ http://thread.gmane.org/gmane.linux.network/45444/ So until there is something analogous to skb_put that works for zero-copy write skbuffs, we will do what the other callers of skb_fill_page_desc are doing. Signed-off-by: "Ed L. Cashin" <ecashin@coraid.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* aoe: remove unused NARGS enumEd L. Cashin2006-10-18
| | | | | | | | | The NARGS enum is left over from older code versions. Signed-off-by: "Ed L. Cashin" <ecashin@coraid.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* aoe: update copyright dateEd L. Cashin2006-10-18
| | | | | | | | | Update the copyright year to 2006. Signed-off-by: "Ed L. Cashin" <ecashin@coraid.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* aoe: eliminate isbusy messageEd L. Cashin2006-10-18
| | | | | | | | | This message doesn't help users because the circumstance isn't problematic. Signed-off-by: "Ed L. Cashin" <ecashin@coraid.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] rd: memory leak on rd_init() failureAkinobu Mita2006-10-17
| | | | | | | | | | | | If RAM disk driver initialization fails due to blk_alloc_queue() faulure, the gendisk structs stored in rd_disks[] will not be freed completely. This patch resolves that memory leak case by doing alloc_disk() and blk_alloc_queue() at the same time. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] z2_init() in non-modular caseAl Viro2006-10-11
| | | | | | | ... another victim - this time of 2.5.1-pre2 Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] amiga_floppy_init() in non-modular caseAl Viro2006-10-11
| | | | | | | | | It used to be called directly, but that got lost in 2.1.87-pre1. Similar breakage in ataflop got fixed 3 years ago, this one had gone unnoticed. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] DAC960: use memmove for overlapping areasAlexey Dobriyan2006-10-11
| | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Use linux/io.h instead of asm/io.hMatthew Wilcox2006-10-11
| | | | | | | | | In preparation for moving check_signature, change these users from asm/io.h to linux/io.h Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] __user annotations: loop.cAl Viro2006-10-10
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fix misannotations in loop.cAl Viro2006-10-10
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Various drivers' irq handlers: kill dead code, needless castsJeff Garzik2006-10-06
| | | | | | | | | | | | | | | | - Eliminate casts to/from void* - Eliminate checks for conditions that never occur. These typically fall into two classes: 1) Checking for 'dev_id == NULL', then it is never called with NULL as an argument. 2) Checking for invalid irq number, when the only caller (the system) guarantees the irq handler is called with the proper 'irq' number argument. Signed-off-by: Jeff Garzik <jeff@garzik.org>
* IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells2006-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
* Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/confighLinus Torvalds2006-10-04
|\ | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/davej/configh: Remove all inclusions of <linux/config.h> Manually resolved trivial path conflicts due to removed files in the sound/oss/ subdirectory.
| * Remove all inclusions of <linux/config.h>Dave Jones2006-10-04
| | | | | | | | | | | | kbuild explicitly includes this at build time. Signed-off-by: Dave Jones <davej@redhat.com>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpcLinus Torvalds2006-10-04
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (25 commits) [POWERPC] Add support for the mpc832x mds board [POWERPC] Add initial support for the e300c2 core [POWERPC] Add MPC8360EMDS default dts file [POWERPC] Add MPC8360EMDS board support [POWERPC] Add QUICC Engine (QE) infrastructure [POWERPC] Add QE device tree node definition [POWERPC] Don't try to just continue if xmon has no input device [POWERPC] Fix a printk in pseries_mpic_init_IRQ [POWERPC] Get default baud rate in udbg_scc [POWERPC] Fix zImage.coff on oldworld PowerMac [POWERPC] Fix xmon=off and cleanup xmon initialisation [POWERPC] Cleanup include/asm-powerpc/xmon.h [POWERPC] Update swim3 printk after blkdev.h change [POWERPC] Cell interrupt rework POWERPC: mpc82xx merge: board-specific/platform stuff(resend) POWERPC: 8272ads merge to powerpc: common stuff POWERPC: Added devicetree for mpc8272ads board [POWERPC] iSeries has no legacy I/O [POWERPC] implement BEGIN/END_FW_FTR_SECTION [POWERPC] iSeries does not need pcibios_fixup_resources ...
| * | [POWERPC] Update swim3 printk after blkdev.h changeOlaf Hering2006-10-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | drivers/block/swim3.c: In function 'swim3_interrupt': drivers/block/swim3.c:640: warning: format '%lx' expects type 'long unsigned int', but argument 3 has type 'unsigned int' drivers/block/swim3.c:746: warning: format '%lx' expects type 'long unsigned int', but argument 3 has type 'unsigned int' Update printk format string after blkdev.h change: Split struct request ->flags into two parts Signed-off-by: Olaf Hering <olaf@aepfle.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | | [PATCH] pktcdvd: rename a variable for better readabilityThomas Maier2006-10-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | pktcdvd: Rename a variable for better readability. Signed-off-by: Thomas Maier <balagi@justmail.de> Signed-off-by: Peter Osterlund <petero2@telia.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] pktcdvd: Replace pktcdvd strings with macro DRIVER_NAME.Thomas Maier2006-10-04
| |/ |/| | | | | | | | | | | | | | | pktcdvd: Replace pktcdvd strings with macro DRIVER_NAME. Signed-off-by: Thomas Maier <balagi@justmail.de> Signed-off-by: Peter Osterlund <petero2@telia.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | Fix bytes <-> kilobytes typo in Kconfig for ramdiskChristian Borntraeger2006-10-03
| | | | | | | | | | | | | | | | This is a small fix for a typo in Kconfig. The default value for the block size is 1024 bytes not 1024 kilobytes. Signed-off-by: Christian Borntraeger <borntrae@de.ibm.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* | remove mentionings of devfs in documentationAdrian Bunk2006-10-03
|/ | | | | | | | | Now that devfs is removed, there's no longer any need to document how to do this or that with devfs. This patch includes some improvements by Joe Perches. Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [PATCH] pr_debug: umem: repair nonexistant bh pr_debug referenceZach Brown2006-10-03
| | | | | | | | umem: repair nonexistant bh pr_debug reference Signed-off-by: Zach Brown <zach.brown@oracle.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] completions: lockdep annotate on stack completionsPeter Zijlstra2006-10-01
| | | | | | | | | | | All on stack DECLARE_COMPLETIONs should be replaced by: DECLARE_COMPLETION_ONSTACK Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Ingo Molnar <mingo@elte.hu> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] cciss: remove unneeded spaces in output for attached volumesMetathronius Galabant2006-10-01
| | | | | | | | | | | | | | | | | | | | It removes the awkwards spaces after the "=" when displaying the geometry of the attached volumes. Before: cciss: using DAC cycles blocks= 286734240 block_size= 512 heads= 255, sectors= 32, cylinders= 35139 After: cciss: using DAC cycles blocks=286734240 block_size=512 heads=255, sectors=32, cylinders=35139 Signed-off-by: Metathronius Galabant <m.galabant@gmail.com> Acked-by: Mike Miller <mike.miller@hp.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] cciss: support for >2TB logical volumesMike Miller (OS Dev)2006-10-01
| | | | | | | | | | Add support for logical volumes >2TB. All SAS/SATA controllers support large volumes. Signed-off-by: Mike Miller <mike.miller@hp.com> Cc: Jens Axboe <axboe@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Generic booleanRichard Knutsson2006-10-01
| | | | | | | | | | | | This patch defines: * a generic boolean-type, named 'bool' * aliases to 0 and 1, named 'false' and 'true' Removing colliding definitions of 'bool', 'false' and 'true'. Signed-off-by: Richard Knutsson <ricknu-0@student.ltu.se> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] BLOCK: Make it possible to disable the block layer [try #6]David Howells2006-09-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make it possible to disable the block layer. Not all embedded devices require it, some can make do with just JFFS2, NFS, ramfs, etc - none of which require the block layer to be present. This patch does the following: (*) Introduces CONFIG_BLOCK to disable the block layer, buffering and blockdev support. (*) Adds dependencies on CONFIG_BLOCK to any configuration item that controls an item that uses the block layer. This includes: (*) Block I/O tracing. (*) Disk partition code. (*) All filesystems that are block based, eg: Ext3, ReiserFS, ISOFS. (*) The SCSI layer. As far as I can tell, even SCSI chardevs use the block layer to do scheduling. Some drivers that use SCSI facilities - such as USB storage - end up disabled indirectly from this. (*) Various block-based device drivers, such as IDE and the old CDROM drivers. (*) MTD blockdev handling and FTL. (*) JFFS - which uses set_bdev_super(), something it could avoid doing by taking a leaf out of JFFS2's book. (*) Makes most of the contents of linux/blkdev.h, linux/buffer_head.h and linux/elevator.h contingent on CONFIG_BLOCK being set. sector_div() is, however, still used in places, and so is still available. (*) Also made contingent are the contents of linux/mpage.h, linux/genhd.h and parts of linux/fs.h. (*) Makes a number of files in fs/ contingent on CONFIG_BLOCK. (*) Makes mm/bounce.c (bounce buffering) contingent on CONFIG_BLOCK. (*) set_page_dirty() doesn't call __set_page_dirty_buffers() if CONFIG_BLOCK is not enabled. (*) fs/no-block.c is created to hold out-of-line stubs and things that are required when CONFIG_BLOCK is not set: (*) Default blockdev file operations (to give error ENODEV on opening). (*) Makes some /proc changes: (*) /proc/devices does not list any blockdevs. (*) /proc/diskstats and /proc/partitions are contingent on CONFIG_BLOCK. (*) Makes some compat ioctl handling contingent on CONFIG_BLOCK. (*) If CONFIG_BLOCK is not defined, makes sys_quotactl() return -ENODEV if given command other than Q_SYNC or if a special device is specified. (*) In init/do_mounts.c, no reference is made to the blockdev routines if CONFIG_BLOCK is not defined. This does not prohibit NFS roots or JFFS2. (*) The bdflush, ioprio_set and ioprio_get syscalls can now be absent (return error ENOSYS by way of cond_syscall if so). (*) The seclvl_bd_claim() and seclvl_bd_release() security calls do nothing if CONFIG_BLOCK is not set, since they can't then happen. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-14 17:13:11 -0500