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* clocksource: pass clocksource to read() callbackMagnus Damm2009-04-2154-79/+94
| | | | | | | | | | | | | | Pass clocksource pointer to the read() callback for clocksources. This allows us to share the callback between multiple instances. [hugh@veritas.com: fix powerpc build of clocksource pass clocksource mods] [akpm@linux-foundation.org: cleanup] Signed-off-by: Magnus Damm <damm@igel.co.jp> Acked-by: John Stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* pxafb: lcsr1 is unused without CONFIG_FB_PXA_OVERLAYDenis V. Lunev2009-04-211-7/+9
| | | | | | | | | | | | | Fixes the warning: drivers/video/pxafb.c: In function 'pxafb_handle_irq': drivers/video/pxafb.c:1442: warning: unused variable 'lcsr1' [akpm@linux-foundation.org: save an ifdef] Signed-off-by: Denis V. Lunev <den@openvz.org> Cc: Eric Miao <eric.miao@marvell.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* asiliantfb: add missing return statementVlada Peric2009-04-211-0/+1
| | | | | | | | | | | | | | | Commit 032220ba (asiliantfb: fix cmap memory leaks) changed the function init_asiliant from void to int, resulting in the following compile warning: drivers/video/asiliantfb.c: In function `init_asiliant': drivers/video/asiliantfb.c:536: warning: control reaches end of non-void function Fix the warning by returning 0. Signed-off-by: Vlada Peric <vlada.peric@gmail.com> Cc: Andres Salomon <dilinger@debian.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixesLinus Torvalds2009-04-212-1/+9
|\ | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes: GFS2: Fix page_mkwrite() return code GFS2: Clear dirty bit at end of inode glock sync
| * GFS2: Fix page_mkwrite() return codeSteven Whitehouse2009-04-201-1/+3
| | | | | | | | | | | | | | | | This allows for the possibility of returning VM_FAULT_OOM as well as VM_FAULT_SIGBUS. This ensures that the correct action is taken. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
| * GFS2: Clear dirty bit at end of inode glock syncSteven Whitehouse2009-04-201-0/+6
| | | | | | | | | | | | | | | | The dirty bit can get set during the inode glock sync. Its too complicated to change that at the moment, so this is the quick fix - to clear the bit again at the end of the function. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* | Merge branch 'sh/for-2.6.30' of ↵Linus Torvalds2009-04-215-21/+59
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 * 'sh/for-2.6.30' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: sh: Fix mmap2 for handling differing PAGE_SIZEs. sh: sh7723: Don't default enable the RTC clock. sh: sh7722: Don't default enable the RTC clock. rtc: rtc-sh: clock framework support.
| * \ Merge branch 'sh/stable-updates' into sh/for-2.6.30Paul Mundt2009-04-21387-4322/+5559
| |\ \
| | * | sh: Fix mmap2 for handling differing PAGE_SIZEs.Toshinobu Sugioka2009-04-211-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | mmap2 uses a fixed page shift of 12, regardless of the PAGE_SIZE setting. Fix up the mmap2 code to add some sanity checks on the mapping, and to update pgoff accordingly. Error handling bits based on 4280e3126f641898f0ed1a931645373d3489e2a6 ("frv: fix mmap2 error handling"). Signed-off-by: Toshinobu Sugioka <sugioka@itonet.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | sh: sh7723: Don't default enable the RTC clock.Paul Mundt2009-04-161-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | rtc-sh takes care of this now, so no need to have this always enabled. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | sh: sh7722: Don't default enable the RTC clock.Paul Mundt2009-04-161-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | rtc-sh takes care of this now, so no need to have this always enabled. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | rtc: rtc-sh: clock framework support.Paul Mundt2009-04-162-19/+50
| | |/ | |/| | | | | | | | | | | | | | | | | | | This adds clock framework support to the rtc-sh driver. With this in place, platforms can default to leaving the clock disabled rather than placing it in the always enabled state. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* | | Merge branch 'for-linus' of ↵Linus Torvalds2009-04-2127-351/+207
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: reiserfs: fix j_last_flush_trans_id type fs: Mark get_filesystem_list() as __init function. kill vfs_stat_fd / vfs_lstat_fd Separate out common fstatat code into vfs_fstatat ecryptfs: use memdup_user() ncpfs: use memdup_user() xfs: use memdup_user() sysfs: use memdup_user() btrfs: use memdup_user() xattr: use memdup_user() autofs4: use memchr() in invalid_string() Documentation/filesystems: remove out of date reference to BKL being held Fix i_mutex vs. readdir handling in nfsd fs/compat_ioctl: fix build when !BLOCK Fix autofs_expire() No need for crossing to mountpoint in audit_tag_tree() Safer nfsd_cross_mnt() Touch all affected namespaces on propagation of mount Fix AUTOFS_DEV_IOCTL_REQUESTER_CMD
| * | | reiserfs: fix j_last_flush_trans_id typeAl Viro2009-04-201-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conversion in commit 600ed41675d8c384519d8f0b3c76afed39ef2f4b had missed that one, but converted format from %lu to %u. As the result, /proc/..../journal got buggered on 64bit boxen. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | fs: Mark get_filesystem_list() as __init function.Tetsuo Handa2009-04-202-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "int get_filesystem_list(char * buf)" is called by only "static void __init get_fs_names(char *page)". We can mark get_filesystem_list() as "__init". Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | kill vfs_stat_fd / vfs_lstat_fdChristoph Hellwig2009-04-203-73/+52
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There's really no reason to keep vfs_stat_fd and vfs_lstat_fd with Oleg's vfs_fstatat. Use vfs_fstatat for the few cases having the directory fd, and switch all others to vfs_stat / vfs_lstat. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | Separate out common fstatat code into vfs_fstatatOleg Drokin2009-04-207-97/+54
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a version incorporating Christoph's suggestion. Separate out common *fstatat functionality into a single function instead of duplicating it all over the code. Signed-off-by: Oleg Drokin <green@linuxhacker.ru> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | ecryptfs: use memdup_user()Li Zefan2009-04-201-10/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove open-coded memdup_user(). Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | ncpfs: use memdup_user()Li Zefan2009-04-201-14/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove open-coded memdup_user() Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | xfs: use memdup_user()Li Zefan2009-04-202-24/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove open-coded memdup_user() Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | sysfs: use memdup_user()Li Zefan2009-04-201-10/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove open-coded memdup_user(). Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | btrfs: use memdup_user()Li Zefan2009-04-202-46/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove open-coded memdup_user(). Note this changes some GFP_NOFS to GFP_KERNEL, since copy_from_user() may cause pagefault, it's pointless to pass GFP_NOFS to kmalloc(). Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | xattr: use memdup_user()Li Zefan2009-04-201-7/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove open-coded memdup_user() Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | autofs4: use memchr() in invalid_string()Al Viro2009-04-201-6/+4
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | Documentation/filesystems: remove out of date reference to BKL being heldAdrian McMenamin2009-04-201-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Documentation/filesystems/vfs.txt incorrectly states that the kernel is locked during the call to statfs (Documentation/filesystems/Locking correctly says it is not). This patch removes the offending sentence. remove reference to BKL being held in statfs Signed-off-by: Adrian McMenamin <adrian@mcmen.demon.co.uk> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | Fix i_mutex vs. readdir handling in nfsdDavid Woodhouse2009-04-203-43/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 14f7dd63 ("Copy XFS readdir hack into nfsd code") introduced a bug to generic code which had been extant for a long time in the XFS version -- it started to call through into lookup_one_len() and hence into the file systems' ->lookup() methods without i_mutex held on the directory. This patch fixes it by locking the directory's i_mutex again before calling the filldir functions. The original deadlocks which commit 14f7dd63 was designed to avoid are still avoided, because they were due to fs-internal locking, not i_mutex. While we're at it, fix the return type of nfsd_buffered_readdir() which should be a __be32 not an int -- it's an NFS errno, not a Linux errno. And return nfserrno(-ENOMEM) when allocation fails, not just -ENOMEM. Sparse would have caught that, if it wasn't so busy bitching about __cold__. Commit 05f4f678 ("nfsd4: don't do lookup within readdir in recovery code") introduced a similar problem with calling lookup_one_len() without i_mutex, which this patch also addresses. To fix that, it was necessary to fix the called functions so that they expect i_mutex to be held; that part was done by J. Bruce Fields. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Umm-I-can-live-with-that-by: Al Viro <viro@zeniv.linux.org.uk> Reported-by: J. R. Okajima <hooanon05@yahoo.co.jp> Tested-by: J. Bruce Fields <bfields@citi.umich.edu> LKML-Reference: <8036.1237474444@jrobl> Cc: stable@kernel.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | fs/compat_ioctl: fix build when !BLOCKAlexander Beregalov2009-04-201-4/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In file included from fs/compat_ioctl.c:61: include/linux/loop.h:59: error: field 'lo_bio_list' has incomplete type Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | Fix autofs_expire()Al Viro2009-04-201-16/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | mnt should remain the same for all iterations through the list; as it is, if we have a busy mount, mnt follows into it and isn't restored for the next iteration. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | No need for crossing to mountpoint in audit_tag_tree()Al Viro2009-04-202-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | is_under() will DTRT anyway. And yes, is_subdir() behaviour is intentional. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | Safer nfsd_cross_mnt()Al Viro2009-04-201-2/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | AFAICS, we have a subtle bug there: if we have crossed mountpoint *and* it got mount --move'd away, we'll be holding only one reference to fs containing dentry - exp->ex_path.mnt. IOW, we ought to dput() before exp_put(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | Touch all affected namespaces on propagation of mountAl Viro2009-04-201-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | We shouldn't just touch the namespace of current process Caught-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | Fix AUTOFS_DEV_IOCTL_REQUESTER_CMDAl Viro2009-04-201-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Missing conversion from kernel to userland dev_t; this sucker breaks as soon as we get sufficiently many autofs mounts for new_encode_dev(s_dev) != s_dev. Note: this is the minimal fix. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | | Fix SYSCALL_ALIAS for older MIPS assemblerThomas Bogendoerfer2009-04-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Older MIPS assembler don't support .set for defining aliases. Using = works for old and new assembers. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Acked-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | NFS: Fix the XDR iovec calculation in nfs3_xdr_setaclargsTrond Myklebust2009-04-211-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit ae46141ff08f1965b17c531b571953c39ce8b9e2 (NFSv3: Fix posix ACL code) introduces a bug in the calculation of the XDR header iovec. In the case where we are inlining the acls, we need to adjust the length of the iovec req->rq_svec, in addition to adjusting the total buffer length. Tested-by: Leonardo Chiquitto <leonardo.lists@gmail.com> Tested-by: Suresh Jayaraman <sjayaraman@suse.de> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | Merge branch 'release' of ↵Linus Torvalds2009-04-202-10/+6
|\ \ \ \ | |/ / / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] fix allmodconfig compilation breakage. [IA64] smp_flush_tlb_mm() should only send IPI's to cpus in cpu_vm_mask [IA64] export smp_send_reschedule
| * | | [IA64] fix allmodconfig compilation breakage.Isaku Yamahata2009-04-201-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes the following compilation error caused by recursive inclusion of kernel.h which defines BUILD_BUG_ON(). In this case, the case it catches will be caught by the case CONFIG_PARAVIRT=n, so removing it would not hurt compile time check very much. So fix the breakage by removing it. CC arch/ia64/kernel/asm-offsets.s In file included from include/linux/bitops.h:17, from include/linux/kernel.h:15, from include/linux/sched.h:52, from arch/ia64/kernel/asm-offsets.c:9: arch/ia64/include/asm/bitops.h: In function 'set_bit': arch/ia64/include/asm/bitops.h:47: error: implicit declaration of function 'BUILD_BUG_ON' Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | | [IA64] smp_flush_tlb_mm() should only send IPI's to cpus in cpu_vm_maskDimitri Sivanich2009-04-161-8/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Having flush_tlb_mm->smp_flush_tlb_mm() send an IPI to every cpu on the system is occasionally triggering spin_lock contention in generic_smp_call_function_interrupt(). Follow x86 arch's lead and only sends IPIs to the cpus in mm->cpu_vm_mask. Experiments with this change have shown significant improvement in this contention issue. Signed-off-by: Dimitri Sivanich <sivanich@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | | [IA64] export smp_send_rescheduleMarcelo Tosatti2009-04-161-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | KVM will use smp_send_reschedule to force a cpu out of guest mode. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | | | Merge branch 'for-linus' of ↵Linus Torvalds2009-04-203-21/+47
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6: PM/Suspend: Introduce two new platform callbacks to avoid breakage
| * | | | PM/Suspend: Introduce two new platform callbacks to avoid breakageRafael J. Wysocki2009-04-193-21/+47
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 900af0d973856d6feb6fc088c2d0d3fde57707d3 (PM: Change suspend code ordering) changed the ordering of suspend code in such a way that the platform .prepare() callback is now executed after the device drivers' late suspend callbacks have run. Unfortunately, this turns out to break ARM platforms that need to talk via I2C to power control devices during the .prepare() callback. For this reason introduce two new platform suspend callbacks, .prepare_late() and .wake(), that will be called just prior to disabling non-boot CPUs and right after bringing them back on line, respectively, and use them instead of .prepare() and .finish() for ACPI suspend. Make the PM core execute the .prepare() and .finish() platform suspend callbacks where they were executed previously (that is, right after calling the regular suspend methods provided by device drivers and right before executing their regular resume methods, respectively). It is not necessary to make analogous changes to the hibernation code and data structures at the moment, because they are only used by ACPI platforms. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Reported-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Len Brown <len.brown@intel.com>
* | | | | Merge branch 'drm-linus' of ↵Linus Torvalds2009-04-204-8/+20
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: agp: zero pages before sending to userspace drm: check for minor master before allowing drop master. drm: set/clear is_master when master changed drm: clean dirty memory after device release drm: count reaches -1
| * | | | | agp: zero pages before sending to userspaceShaohua Li2009-04-201-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | AGP pages might be mapped into userspace finally, so the pages should be set to zero before userspace can use it. Otherwise there is potential information leakage. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
| * | | | | drm: check for minor master before allowing drop master.Dave Airlie2009-04-201-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When fast user switching a lot eventually we get to the point, where we were checking for the wrong thing in this function. Signed-off-by: Dave Airlie <airlied@redhat.com>
| * | | | | drm: set/clear is_master when master changedJonas Bonn2009-04-201-1/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The variable is_master is being used to track the drm_file that is currently master, so its value needs to be updated accordingly when the master is changed. Signed-off-by: Jonas Bonn <jonas@southpole.se> Signed-off-by: Dave Airlie <airlied@redhat.com>
| * | | | | drm: clean dirty memory after device releaseMa Ling2009-04-201-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In current code we register/unregister connector object by drm_sysfs_connector_add/remove function. However under some cases, we need to dynamically register or unregister device multiple times, so we have to go through register -> unregister ->register routine. Because after device_unregister function our memory is dirty, we need to do clean operation in order to re-register the device, otherwise the system will crash. The patch intends to clean device after device release. Signed-off-by: Ma Ling <ling.ma@intel.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
| * | | | | drm: count reaches -1Roel Kluin2009-04-201-5/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With a postfix decrement in the test count will reach -1 rather than 0, subsequent tests fail. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
* | | | | | Merge branch 'for-linus' of git://neil.brown.name/mdLinus Torvalds2009-04-204-25/+51
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://neil.brown.name/md: md: support bitmaps on RAID10 arrays larger then 2 terabytes md: update sync_completed and reshape_position even more often. md: improve usefulness and accuracy of sysfs file md/sync_completed. md: allow setting newly added device to 'in_sync' via sysfs. md: tiny md.h cleanups
| * | | | | | md: support bitmaps on RAID10 arrays larger then 2 terabytesNeilBrown2009-04-201-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | .. and other arrays with components larger than 2 terabytes. We use a "long" rather than a "sector_t" in part of the bitmap size calculations, which is sad. Reported-by: "Mario 'BitKoenig' Holbe" <Mario.Holbe@TU-Ilmenau.DE> Signed-off-by: NeilBrown <neilb@suse.de>
| * | | | | | md: update sync_completed and reshape_position even more often.NeilBrown2009-04-172-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are circumstances when a user-space process might need to "oversee" a resync/reshape process. For example when doing an in-place reshape of a raid5, it is prudent to take a backup of each section before reshaping it as this is the only way to provide safety against an unplanned shutdown (i.e. crash/power failure). The sync_max sysfs value can be used to stop the resync from advancing beyond a particular point. So user-space can: suspend IO to the first section and back it up set 'sync_max' to the end of the section wait for 'sync_completed' to reach that point resume IO on the first section and move on to the next section. However this process requires the kernel and user-space to run in lock-step which could introduce unnecessary delays. It would be better if a 'double buffered' approach could be used with userspace and kernel space working on different sections with the 'next' section always ready when the 'current' section is finished. One problem with implementing this is that sync_completed is only guaranteed to be updated when the sync process reaches sync_max. (it is updated on a time basis at other times, but it is hard to rely on that). This defeats some of the double buffering. With this patch, sync_completed (and reshape_position) get updated as the current position approaches sync_max, so there is room for userspace to advance sync_max early without losing updates. To be precise, sync_completed is updated when the current sync position reaches half way between the current value of sync_completed and the value of sync_max. This will usually be a good time for user space to update sync_max. If sync_max does not get updated, the updates to sync_completed (together with associated metadata updates) will occur at an exponentially increasing frequency which will get unreasonably fast (one update every page) immediately before the process hits sync_max and stops. So the update rate will be unreasonably fast only for an insignificant period of time. Signed-off-by: NeilBrown <neilb@suse.de>
| * | | | | | md: improve usefulness and accuracy of sysfs file md/sync_completed.NeilBrown2009-04-143-12/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The sync_completed file reports how much of a resync (or recovery or reshape) has been completed. However due to the possibility of out-of-order completion of writes, it is not certain to be accurate. We have an internal value - mddev->curr_resync_completed - which is an accurate value (though it might not always be quite so uptodate). So: - make curr_resync_completed be uptodate a little more often, particularly when raid5 reshape updates status in the metadata - report curr_resync_completed in the sysfs file - allow poll/select to report all updates to md/sync_completed. This makes sync_completed completed usable by any external metadata handler that wants to record this status information in its metadata. Signed-off-by: NeilBrown <neilb@suse.de>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 18:41:43 +0000