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2006-10-03[PATCH] kernel-doc for kernel/dma.cRandy Dunlap
Add kernel-doc function headers in kernel/dma.c and use it in DocBook. Clean up kernel-doc in mca_dma.h (the colon (':') represents a section header). Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-03[PATCH] low performance of lib/sort.ckeios
It is a non-standard heap-sort algorithm implementation because the index of child node is wrong . The sort function still outputs right result, but the performance is O( n * ( log(n) + 1 ) ) , about 10% ~ 20% worse than standard algorithm. Signed-off-by: keios <keios.cn@gmail.com> Acked-by: Matt Mackall <mpm@selenic.com> Acked-by: Zou Nan hai <nanhai.zou@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-03[PATCH] Create kallsyms_lookup_size_offset()Franck Bui-Huu
Some uses of kallsyms_lookup() do not need to find out the name of a symbol and its module's name it belongs. This is specially true in arch specific code, which needs to unwind the stack to show the back trace during oops (mips is an example). In this specific case, we just need to retreive the function's size and the offset of the active intruction inside it. Adds a new entry "kallsyms_lookup_size_offset()" This new entry does exactly the same as kallsyms_lookup() but does not require any buffers to store any names. It returns 0 if it fails otherwise 1. Signed-off-by: Franck Bui-Huu <vagabon.xyz@gmail.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-03[PATCH] FRV: Permit large kmalloc allocations [try #2]David Howells
Permit kmalloc() to make allocations of up to 32MB if so configured. This may be useful under NOMMU conditions where vmalloc() can't do this. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-03[PATCH] VFS: Make filldir_t and struct kstat deal in 64-bit inode numbersDavid Howells
These patches make the kernel pass 64-bit inode numbers internally when communicating to userspace, even on a 32-bit system. They are required because some filesystems have intrinsic 64-bit inode numbers: NFS3+ and XFS for example. The 64-bit inode numbers are then propagated to userspace automatically where the arch supports it. Problems have been seen with userspace (eg: ld.so) using the 64-bit inode number returned by stat64() or getdents64() to differentiate files, and failing because the 64-bit inode number space was compressed to 32-bits, and so overlaps occur. This patch: Make filldir_t take a 64-bit inode number and struct kstat carry a 64-bit inode number so that 64-bit inode numbers can be passed back to userspace. The stat functions then returns the full 64-bit inode number where available and where possible. If it is not possible to represent the inode number supplied by the filesystem in the field provided by userspace, then error EOVERFLOW will be issued. Similarly, the getdents/readdir functions now pass the full 64-bit inode number to userspace where possible, returning EOVERFLOW instead when a directory entry is encountered that can't be properly represented. Note that this means that some inodes will not be stat'able on a 32-bit system with old libraries where they were before - but it does mean that there will be no ambiguity over what a 32-bit inode number refers to. Note similarly that directory scans may be cut short with an error on a 32-bit system with old libraries where the scan would work before for the same reasons. It is judged unlikely that this situation will occur because modern glibc uses 64-bit capable versions of stat and getdents class functions exclusively, and that older systems are unlikely to encounter unrepresentable inode numbers anyway. [akpm: alpha build fix] Signed-off-by: David Howells <dhowells@redhat.com> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-03[PATCH] pid.h cleanupAndrew Morton
Make the pid.h macros look less revolting in an 80-col window. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02[PATCH] Add unifdef to gitignorePaul Mundt
This seems to have been missed when unifdef went in via Sam's tree.. Signed-off-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02[PATCH] hp100: fix conditional compilation messJeff Garzik
The previous hp100 changeset attempted to kill warnings, but was only tested on !CONFIG_ISA platforms. The correct conditional compilation setup involves tested CONFIG_ISA rather than just MODULE. Fixes link on CONFIG_ISA platforms (i386) in current -git. Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02[PATCH] revert "insert IOAPIC(s) and Local APIC into resource map"Andrew Morton
Commit 54dbc0c9ebefb38840c6b07fa6eabaeb96c921f5 is causing various people's machines to fail to map PCI resources. Revert it in preparation for addressing the show-APICs-in-/proc/iomem requirement in a different manner. Cc: Aaron Durbin <adurbin@google.com> Cc: Andi Kleen <ak@muc.de> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: IB/ehca: Tweak trace message format IB/ehca: Fix device registration IB/ipath: Fix RDMA reads RDMA/cma: Optimize error handling RDMA/cma: Eliminate unnecessary remove_list RDMA/cma: Set status correctly on route resolution error RDMA/cma: Fix device removal race RDMA/cma: Fix leak of cm_ids in case of failures
2006-10-02IB/ehca: Tweak trace message formatHoang-Nam Nguyen
Add an extra space to make things more readable. Signed-off-by: Hoang-Nam Nguyen <hnguyen@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-10-02IB/ehca: Fix device registrationHoang-Nam Nguyen
Move the call to ib_register_device() later, since a device should not be registered until it is completely read to be used. This fixes crashes that occur if an upper-layer driver such as IPoIB is loaded before the ehca module. Signed-off-by: Hoang-Nam Nguyen <hnguyen@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-10-02IB/ipath: Fix RDMA readsRalph Campbell
The PSN used to generate the request following a RDMA read was incorrect and some state booking wasn't maintained correctly. This patch fixes that. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
2006-10-02RDMA/cma: Optimize error handlingKrishna Kumar
Reorganize code relating to cma_get_net_info() and rdam_create_id() to optimize error case handling (no need to alloc memory/etc. as part of rdma_create_id() if input parameters are wrong). Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com> Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-10-02RDMA/cma: Eliminate unnecessary remove_listKrishna Kumar
Eliminate remove_list by using list_del_init() instead during device removal handling. Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com> Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-10-02RDMA/cma: Set status correctly on route resolution errorSean Hefty
On reporting a route error, also include the status for the error, rather than indicating a status of 0 when an error has occurred. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-10-02RDMA/cma: Fix device removal raceKrishna Kumar
The race is as follows: A process : cma_process_remove() calls cma_remove_id_dev(), which sets id state to CMA_DEVICE_REMOVAL and calls wait_event(dev_remove). B process : cma_req_handler() had incremented dev_remove, and calls cma_acquire_ib_dev() and on failure calls cma_release_remove(), which does a wake_up of cma_process_remove(). Then cma_req_handler() calls rdma_destroy_id(); A Process : cma_remove_id_dev() gets woken and checks the state of id, and since it is still (wrongly) CMA_DEVICE_REMOVAL, it calls notify_user(id) and if that fails, the caller - cma_process_remove() calls rdma_destroy_id(id). Two processes can call rdma_destroy_id(), resulting in one de-referencing kfreed id_priv. Fix is for process B to set CMA_DESTROYING in cma_req_handler() so that process A will return instead of doing a rdma_destroy_id(). Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com> Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-10-02RDMA/cma: Fix leak of cm_ids in case of failuresKrishna Kumar
cma_connect_ib() and cma_connect_iw() leak cm_id's in failure cases. Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com> Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-10-02Merge master.kernel.org:/pub/scm/linux/kernel/git/wim/linux-2.6-watchdogLinus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog: [WATCHDOG] improve machzwd detection [WATCHDOG] use ENOTTY instead of ENOIOCTLCMD in ioctl() [WATCHDOG] s3c24XX nowayout [WATCHDOG] pnx4008: add cpu_relax() [WATCHDOG] pnx4008_wdt.c - spinlock fixes. [WATCHDOG] pnx4008_wdt.c - remove patch [WATCHDOG] pnx4008_wdt.c - nowayout patch [WATCHDOG] pnx4008: add watchdog support [WATCHDOG] i8xx_tco remove pci_find_device. [WATCHDOG] alim remove pci_find_device
2006-10-02[WATCHDOG] improve machzwd detectionDave Jones
On a machine with no machzwd, loading the module prints out.. machzwd: MachZ ZF-Logic Watchdog driver initializing. 0xffff machzwd: Watchdog using action = RESET - the 0xffff printk is unnecessary - 0xffff seems to be 'hardware not present' - fix CodingStyle. (This driver could use some more work here) Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Signed-off-by: Andrew Morton <akpm@osdl.org>
2006-10-02[WATCHDOG] use ENOTTY instead of ENOIOCTLCMD in ioctl()Samuel Tardieu
Return ENOTTY instead of ENOIOCTLCMD in user-visible ioctl() results The watchdog drivers used to return ENOIOCTLCMD for bad ioctl() commands. ENOIOCTLCMD should not be visible by the user, so use ENOTTY instead. Signed-off-by: Samuel Tardieu <sam@rfc1149.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org>
2006-10-02[WATCHDOG] s3c24XX nowayoutBen Dooks
If the driver is not configured for `no way out`, then the open method should not automatically allow the setting of allow_close to CLOSE_STATE_ALLOW. The setting of allow_close nullifies the use of the magic close via the write path. It means that in the default state, the watchdog will shut-down even if the magic close has not been issued. Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2006-10-02[WATCHDOG] pnx4008: add cpu_relax()Vitaly Wool
Added cpu_relax as suggested by Alan Cox. Signed-off-by: Vitaly Wool <vitalywool@gmail.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2006-10-02[WATCHDOG] pnx4008_wdt.c - spinlock fixes.Wim Van Sebroeck
Add io spinlocks to prevent possible race conditions between start and stop operations that are issued from different child processes where the master process opened /dev/watchdog. Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2006-10-02Add prototype for sigset_from_compat()Linus Torvalds
Duh. I screwed up editing David Howells patch in commit 3f2e05e90e0846c42626e3d272454f26be34a1bc, and the actual declaration for the sigset_from_compat() function went missing. My bad. Olaf Hering saved the day and noticed that I'm a moron. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02[WATCHDOG] pnx4008_wdt.c - remove patchWim Van Sebroeck
Change remove code so that we first detach the driver from userspace, then clean up the clock and then clean up the memory we allocated. Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2006-10-02[WATCHDOG] pnx4008_wdt.c - nowayout patchWim Van Sebroeck
Change nowayout to: WATCHDOG_NOWAYOUT as defined in include/linux/watchdog.h . Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2006-10-02[WATCHDOG] pnx4008: add watchdog supportVitaly Wool
Add watchdog support for Philips PNX4008 ARM board inlined. Signed-off-by: Vitaly Wool <vitalywool@gmail.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2006-10-02[WATCHDOG] i8xx_tco remove pci_find_device.Jiri Slaby
Use refcounting for pci device obtaining. Use PCI_DEVICE macro. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Cc: Andrew Morton <akpm@osdl.org>
2006-10-02[WATCHDOG] alim remove pci_find_deviceJiri Slaby
Convert pci_find_device to pci_get_device + pci_dev_put in alim watchdog cards' drivers (refcounting). Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Signed-off-by: Andrew Morton <akpm@osdl.org>
2006-10-02Merge branch 'upstream-linus' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6 * 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: (37 commits) [netdrvr] hp100: encapsulate all non-module code drivers/net/wireless/{airo,ipw2100}: fix error handling bugs [netdrvr] phy: Fix bugs in error handling [PATCH] spidernet: Use pci_dma_mapping_error() [PATCH] sky2: version 1.9 [PATCH] sky2: fragmented receive for large MTU [PATCH] sky2: use netif_tx_lock instead of LLTX [PATCH] sky2: incremental transmit completion [PATCH] sky2: name irq after eth for irqbalance [PATCH] sky2: workarounds for some 88e806x chips [PATCH] sky2: use standard pci register capabilties for error register [PATCH] sky2: gigabit full duplex negotiation e100, e1000, ixgb: increment version numbers ixgb: convert to netdev_priv(netdev) ixgb: combine more rx descriptors to improve performance e1000: possible memory leak in e1000_set_ringparam e1000: Janitor: Use #defined values for literals e1000: don't strip vlan ID if 8021q claims it e1000: rework polarity, NVM, eeprom code and fixes. e1000: driver state fixes (race fix) ...
2006-10-02Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6: JFS: White space cleanup [PATCH] JFS: return correct error when i-node allocation failed JFS: Remove shadow variable from fs/jfs/jfs_txnmgr.c:xtLog()
2006-10-02Merge git://git.infradead.org/mtd-2.6Linus Torvalds
* git://git.infradead.org/mtd-2.6: [MTD] Cleanup of 'ioremap balanced with iounmap for drivers/mtd subsystem' [MTD] fix nftl_write warning [MTD] fix printk warning [MTD ONENAND] Check OneNAND lock scheme & all block unlock command support [MTD ONENAND] Remove unused MTD_ONENAND_SYNC_READ configuration [MTD ONENAND] Fix OneNAND probe [MTD NAND] Provide prototype for newly-exported nand_wait_ready() [MTD] Remove #ifndef __KERNEL__ hack in <mtd/mtd-abi.h> [MTD NAND] Allow override of page read and write functions. [MTD NAND] Allocate chip->buffers separately to allow it to be overridden [MTD NAND] Split nand_scan() into two parts; allow board driver to intervene [MTD NAND] Export nand_wait_ready() for use by board drivers
2006-10-02Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (35 commits) Input: wistron - add support for Acer TravelMate 2424NWXCi Input: wistron - fix setting up special buttons Input: add KEY_BLUETOOTH and KEY_WLAN definitions Input: add new BUS_VIRTUAL bus type Input: add driver for stowaway serial keyboards Input: make input_register_handler() return error codes Input: remove cruft that was needed for transition to sysfs Input: fix input module refcounting Input: constify input core Input: libps2 - rearrange exports Input: atkbd - support Microsoft Natural Elite Pro keyboards Input: i8042 - disable MUX mode on Toshiba Equium A110 Input: i8042 - get rid of polling timer Input: send key up events at disconnect Input: constify psmouse driver Input: i8042 - add Amoi to the MUX blacklist Input: logips2pp - add sugnature 56 (Cordless MouseMan Wheel), cleanup Input: add driver for Touchwin serial touchscreens Input: add driver for Touchright serial touchscreens Input: add driver for Penmount serial touchscreens ...
2006-10-02Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: [MIPS] Remove unused galileo-boars header files [MIPS] Rename SERIAL_PORT_DEFNS for EV64120 [MIPS] Add UART IRQ number for EV64120 [MIPS] Remove excite_flash.c [MIPS] Update i8259 resources. [MIPS] Make unwind_stack() can dig into interrupted context [MIPS] Stacktrace build-fix and improvement [MIPS] QEMU: Add support for little endian mips [MIPS] Remove __flush_icache_page [MIPS] lockdep: update defconfigs [MIPS] lockdep: Add STACKTRACE_SUPPORT and enable LOCKDEP_SUPPORT [MIPS] lockdep: fix TRACE_IRQFLAGS_SUPPORT
2006-10-02[PATCH] BLOCK: Revert patch to hack around undeclared sigset_t in linux/compat.hDavid Howells
Revert Andrew Morton's patch to temporarily hack around the lack of a declaration of sigset_t in linux/compat.h to make the block-disablement patches build on IA64. This got accidentally pushed to Linus and should be fixed in a different manner. Also make linux/compat.h #include asm/signal.h to gain a definition of sigset_t so that it can externally declare sigset_from_compat(). This has been compile-tested for i386, x86_64, ia64, mips, mips64, frv, ppc and ppc64 and run-tested on frv. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02[PATCH] replace cad_pid by a struct pidCedric Le Goater
There are a few places in the kernel where the init task is signaled. The ctrl+alt+del sequence is one them. It kills a task, usually init, using a cached pid (cad_pid). This patch replaces the pid_t by a struct pid to avoid pid wrap around problem. The struct pid is initialized at boot time in init() and can be modified through systctl with /proc/sys/kernel/cad_pid [ I haven't found any distro using it ? ] It also introduces a small helper routine kill_cad_pid() which is used where it seemed ok to use cad_pid instead of pid 1. [akpm@osdl.org: cleanups, build fix] Signed-off-by: Cedric Le Goater <clg@fr.ibm.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02[PATCH] introduce get_task_pid() to fix unsafe get_pid()Oleg Nesterov
proc_pid_make_inode: ei->pid = get_pid(task_pid(task)); I think this is not safe. get_pid() can be preempted after checking "pid != NULL". Then the task exits, does detach_pid(), and RCU frees the pid. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02[PATCH] proc: comment what proc_fill_cache doesEric W. Biederman
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02[PATCH] proc: remove the useless SMP-safe comments from /procEric W. Biederman
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02[PATCH] proc: remove trailing blank entry from pid_entry arraysEric W. Biederman
It was pointed out that since I am taking ARRAY_SIZE anyway the trailing empty entry is silly and just wastes space. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02[PATCH] proc: properly compute TGID_OFFSETEric W. Biederman
The value doesn't change but this ensures I will have the proper value when other files are added to proc_base_stuff. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02[PATCH] proc: drop tasklist lock in task_state()Oleg Nesterov
task_state() needs tasklist_lock to protect ->parent/->real_parent. However task->parent points to nowhere only when the actions below happen in order 1) release_task(task) 2) release_task(task->parent) 3) a grace period passed But 3) implies that the memory ops from 1) should be finished, so pid_alive() can't be true in such a case. Otherwise, we don't care if ->parent/->real_parent changes under us. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02[PATCH] proc: convert do_task_stat() to use lock_task_sighand()Oleg Nesterov
Drop tasklist_lock. ->siglock protects almost all interesting data (including sub-threads traversal) except: ->signal->tty protected by tty_mutex ->real_parent the task can't be unhashed while we are holding ->siglock, so ->real_parent can change from under us but we can safely dereference it under rcu_read_lock() ->pgrp/->session we can get inconsistent numbers if the task does sys_setsid/daemonize at the same time. I hope this is acceptable. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02[PATCH] proc: convert task_sig() to use lock_task_sighand()Oleg Nesterov
lock_task_sighand() can take ->siglock without holding tasklist_lock. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02[PATCH] proc: Use pid_task instead of open coding itEric W. Biederman
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02[PATCH] proc: Merge proc_tid_attr and proc_tgid_attrEric W. Biederman
The implementation is exactly the same and there is currently nothing to distinguish proc_tid_attr, and proc_tgid_attr. So it is pointless to have two separate implementations. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02[PATCH] proc: Remove the hard coded inode numbersEric W. Biederman
The hard coded inode numbers in proc currently limit its maintainability, its flexibility, and what can be done with the rest of system. /proc limits pid-max to 32768 on 32 bit systems it limits fd-max to 32768 on all systems, and placing the pid in the inode number really gets in the way of implementing subdirectories of per process information. Ever since people started adding to the middle of the file type enumeration we haven't been maintaing the historical inode numbers, all we have really succeeded in doing is keeping the pid in the proc inode number. The pid is already available in the directory name so no information is lost removing it from the inode number. So if something in user space cares if we remove the inode number from the /proc inode it is almost certainly broken. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02[PATCH] proc: Factor out an instantiate method from every lookup methodEric W. Biederman
To remove the hard coded proc inode numbers it is necessary to be able to create the proc inodes during readdir. The instantiate methods are the subset of lookup that is needed to accomplish that. This first step just splits the lookup methods into 2 functions. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02[PATCH] proc: Make the generation of the self symlink table drivenEric W. Biederman
This patch generalizes the concept of files in /proc that are related to processes but live in the root directory of /proc Ideally this would reuse infrastructure from the rest of the process specific parts of proc but unfortunately security_task_to_inode must not be called on files that are not strictly per process. security_task_to_inode really needs to be reexamined as the security label can change in important places that we are not currently catching, but I'm not certain that simplifies this problem. By at least matching the structure of the rest of proc we get more idiom reuse and it becomes easier to spot problems in the way things are put together. Later things like /proc/mounts are likely to be moved into proc_base as well. If union mounts are ever supported we may be able to make /proc a union mount, and properly split it into 2 filesystems. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>