linux/arch/s390/include, branch v3.0.3

[S390] fix kvm defines for 31 bit compile

2011-06-06T12:14:56Z

KVM is not available for 31 bit but the KVM defines cause warnings: arch/s390/include/asm/pgtable.h: In function 'ptep_test_and_clear_user_dirty': arch/s390/include/asm/pgtable.h:817: warning: integer constant is too large for 'unsigned long' type arch/s390/include/asm/pgtable.h:818: warning: integer constant is too large for 'unsigned long' type arch/s390/include/asm/pgtable.h: In function 'ptep_test_and_clear_user_young': arch/s390/include/asm/pgtable.h:837: warning: integer constant is too large for 'unsigned long' type arch/s390/include/asm/pgtable.h:838: warning: integer constant is too large for 'unsigned long' type Add 31 bit versions of the KVM defines to remove the warnings. Signed-off-by: Martin Schwidefsky

[S390] use generic RCU page-table freeing code

2011-06-06T12:14:56Z

Replace the s390 specific rcu page-table freeing code with the generic variant. This requires to duplicate the definition for the struct mmu_table_batch as s390 does not use the generic tlb flush code. While we are at it remove the restriction that page table fragments can not be reused after a single fragment has been freed with rcu and split out allocation and freeing of page tables with pgstes. Signed-off-by: Martin Schwidefsky

[S390] qdio: Split SBAL entry flags

2011-06-06T12:14:56Z

The qdio SBAL entry flag is made-up of four different values that are independent of one another. Some of the bits are reserved by the hardware and should not be changed by qdio. Currently all four values are overwritten since the SBAL entry flag is defined as an u32. Split the SBAL entry flag into four u8's as defined by the hardware and don't touch the reserved bits. Signed-off-by: Jan Glauber Signed-off-by: Martin Schwidefsky

[S390] mm: fix storage key handling

2011-05-29T10:40:51Z

page_get_storage_key() and page_set_storage_key() expect a page address and not its page frame number. This got inconsistent with 2d42552d "[S390] merge page_test_dirty and page_clear_dirty". Result is that we read/write storage keys from random pages and do not have a working dirty bit tracking at all. E.g. SetPageUpdate() doesn't clear the dirty bit of requested pages, which for example ext4 doesn't like very much and panics after a while. Unable to handle kernel paging request at virtual user address (null) Oops: 0004 [#1] PREEMPT SMP DEBUG_PAGEALLOC Modules linked in: CPU: 1 Not tainted 2.6.39-07551-g139f37f-dirty #152 Process flush-94:0 (pid: 1576, task: 000000003eb34538, ksp: 000000003c287b70) Krnl PSW : 0704c00180000000 0000000000316b12 (jbd2_journal_file_inode+0x10e/0x138) R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:0 PM:0 EA:3 Krnl GPRS: 0000000000000000 0000000000000000 0000000000000000 0700000000000000 0000000000316a62 000000003eb34cd0 0000000000000025 000000003c287b88 0000000000000001 000000003c287a70 000000003f1ec678 000000003f1ec000 0000000000000000 000000003e66ec00 0000000000316a62 000000003c287988 Krnl Code: 0000000000316b04: f0a0000407f4 srp 4(11,%r0),2036,0 0000000000316b0a: b9020022 ltgr %r2,%r2 0000000000316b0e: a7740015 brc 7,316b38 >0000000000316b12: e3d0c0000024 stg %r13,0(%r12) 0000000000316b18: 4120c010 la %r2,16(%r12) 0000000000316b1c: 4130d060 la %r3,96(%r13) 0000000000316b20: e340d0600004 lg %r4,96(%r13) 0000000000316b26: c0e50002b567 brasl %r14,36d5f4 Call Trace: ([<0000000000316a62>] jbd2_journal_file_inode+0x5e/0x138) [<00000000002da13c>] mpage_da_map_and_submit+0x2e8/0x42c [<00000000002daac2>] ext4_da_writepages+0x2da/0x504 [<00000000002597e8>] writeback_single_inode+0xf8/0x268 [<0000000000259f06>] writeback_sb_inodes+0xd2/0x18c [<000000000025a700>] writeback_inodes_wb+0x80/0x168 [<000000000025aa92>] wb_writeback+0x2aa/0x324 [<000000000025abde>] wb_do_writeback+0xd2/0x274 [<000000000025ae3a>] bdi_writeback_thread+0xba/0x1c4 [<00000000001737be>] kthread+0xa6/0xb0 [<000000000056c1da>] kernel_thread_starter+0x6/0xc [<000000000056c1d4>] kernel_thread_starter+0x0/0xc INFO: lockdep is turned off. Last Breaking-Event-Address: [<0000000000316a8a>] jbd2_journal_file_inode+0x86/0x138 Reported-by: Sebastian Ott Signed-off-by: Heiko Carstens

Merge branch 'setns'

2011-05-28T17:51:01Z

* setns: ns: Wire up the setns system call Done as a merge to make it easier to fix up conflicts in arm due to addition of sendmmsg system call

ns: Wire up the setns system call

2011-05-28T17:48:39Z

32bit and 64bit on x86 are tested and working. The rest I have looked at closely and I can't find any problems. setns is an easy system call to wire up. It just takes two ints so I don't expect any weird architecture porting problems. While doing this I have noticed that we have some architectures that are very slow to get new system calls. cris seems to be the slowest where the last system calls wired up were preadv and pwritev. avr32 is weird in that recvmmsg was wired up but never declared in unistd.h. frv is behind with perf_event_open being the last syscall wired up. On h8300 the last system call wired up was epoll_wait. On m32r the last system call wired up was fallocate. mn10300 has recvmmsg as the last system call wired up. The rest seem to at least have syncfs wired up which was new in the 2.6.39. v2: Most of the architecture support added by Daniel Lezcano v3: ported to v2.6.36-rc4 by: Eric W. Biederman v4: Moved wiring up of the system call to another patch v5: ported to v2.6.39-rc6 v6: rebased onto parisc-next and net-next to avoid syscall conflicts. v7: ported to Linus's latest post 2.6.39 tree. > arch/blackfin/include/asm/unistd.h | 3 ++- > arch/blackfin/mach-common/entry.S | 1 + Acked-by: Mike Frysinger Oh - ia64 wiring looks good. Acked-by: Tony Luck Signed-off-by: Eric W. Biederman Signed-off-by: Linus Torvalds

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6

2011-05-27T21:27:34Z

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6: PM: Fix PM QOS's user mode interface to work with ASCII input PM / Hibernate: Update kerneldoc comments in hibernate.c PM / Hibernate: Remove arch_prepare_suspend() PM / Hibernate: Update some comments in core hibernate code

Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6

2011-05-27T17:18:00Z

* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: [S390] mm: add ZONE_DMA to 31-bit config again [S390] mm: add page fault retry handling [S390] mm: handle kernel caused page fault oom situations [S390] delay: implement ndelay [S390] topology,sched: fix cpu_coregroup_mask/cpu_book_mask definitions [S390] hwsampler: allow cpu hotplug [S390] uaccess: turn __access_ok() into a define [S390] irq: merge irq.c and s390_ext.c [S390] irq: fix service signal external interrupt handling [S390] pfault: always enable service signal interrupt

s390: use asm-generic/bitops/le.h

2011-05-27T00:12:38Z

The previous style change enables to use asm-generic/bitops/le.h on s390. Signed-off-by: Akinobu Mita Cc: Arnd Bergmann Cc: Russell King Cc: Martin Schwidefsky Cc: Heiko Carstens Cc: Greg Ungerer Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

arch: add #define for each of optimized find bitops

2011-05-27T00:12:38Z

The style that we normally use in asm-generic is to test the macro itself for existence, so in asm-generic, do: #ifndef find_next_zero_bit_le extern unsigned long find_next_zero_bit_le(const void *addr, unsigned long size, unsigned long offset); #endif and in the architectures, write static inline unsigned long find_next_zero_bit_le(const void *addr, unsigned long size, unsigned long offset) #define find_next_zero_bit_le find_next_zero_bit_le This adds the #define for each of the optimized find bitops in the architectures. Suggested-by: Arnd Bergmann Signed-off-by: Akinobu Mita Acked-by: Hans-Christian Egtvedt Acked-by: Russell King Acked-by: Greg Ungerer Cc: Martin Schwidefsky Cc: Heiko Carstens Acked-by: Geert Uytterhoeven Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds