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* mn10300, exec: remove redundant set_fs(USER_DS)Mathias Krause2011-07-261-1/+0
| | | | | | | | | | | The address limit is already set in flush_old_exec() so this set_fs(USER_DS) is redundant. Signed-off-by: Mathias Krause <minipli@googlemail.com> Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/base/power/opp.c: fix dev_opp initial valueJonghwan Choi2011-07-261-1/+1
| | | | | | | | | | | Dev_opp initial value shoule be ERR_PTR(), IS_ERR() is used to check error. Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* frv, exec: remove redundant set_fs(USER_DS)Mathias Krause2011-07-262-5/+1
| | | | | | | | | | | | The address limit is already set in flush_old_exec() so those calls to set_fs(USER_DS) are redundant. Also removed the dead code in flush_thread(). Signed-off-by: Mathias Krause <minipli@googlemail.com> Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linusLinus Torvalds2011-07-2656-287/+697
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus: (31 commits) MIPS: Close races in TLB modify handlers. MIPS: Add uasm UASM_i_SRL_SAFE macro. MIPS: RB532: Use hex_to_bin() MIPS: Enable cpu_has_clo_clz for MIPS Technologies' platforms MIPS: PowerTV: Provide cpu-feature-overrides.h MIPS: Remove pointless return statement from empty void functions. MIPS: Limit fixrange_init() to the FIXMAP region MIPS: Install handlers for software IRQs MIPS: Move FIXADDR_TOP into spaces.h MIPS: Add SYNC after cacheflush MIPS: pfn_valid() is broken on low memory HIGHMEM systems MIPS: HIGHMEM DMA on noncoherent MIPS32 processors MIPS: topdown mmap support MIPS: Remove redundant addr_limit assignment on exec. MIPS: AR7: Replace __attribute__((__packed__)) with __packed MIPS: AR7: Remove 'space before tabs' in platform.c MIPS: Lantiq: Add missing clk_enable and clk_disable functions. MIPS: AR7: Fix trailing semicolon bug in clock.c MAINTAINERS: Update MIPS entry. MIPS: BCM63xx: Remove duplicate PERF_IRQSTAT_REG definition ...
| * MIPS: Close races in TLB modify handlers.David Daney2011-07-261-98/+194
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Page table entries are made invalid by writing a zero into the the PTE slot in a page table. This creates a race condition with the TLB modify handlers when they are updating the PTE. CPU0 CPU1 Test for _PAGE_PRESENT . set to not _PAGE_PRESENT (zero) Set to _PAGE_VALID So now the page not present value (zero) is suddenly valid and user space programs have access to physical page zero. We close the race by putting the test for _PAGE_PRESENT and setting of _PAGE_VALID into an atomic LL/SC section. This requires more registers than just K0 and K1 in the handlers, so we need to save some registers to a save area and then restore them when we are done. The save area is an array of cacheline aligned structures that should not suffer cache line bouncing as they are CPU private. [ralf@linux-mips.org: Fix !defined(CONFIG_MIPS_PGD_C0_CONTEXT) build error.] Signed-off-by: David Daney <david.daney@cavium.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2577/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: Add uasm UASM_i_SRL_SAFE macro.David Daney2011-07-261-0/+2
| | | | | | | | | | | | | | | | | | | | This can be used from either 32-bit or 64-bit code to generate logical right shifts of any constant amount. Signed-off-by: David Daney <david.daney@cavium.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2576/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: RB532: Use hex_to_bin()Andy Shevchenko2011-07-251-15/+9
| | | | | | | | | | | | | | | | | | | | | | | | Remove custom implementation of hex_to_bin(). Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org To: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/1580/ Acked-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: Enable cpu_has_clo_clz for MIPS Technologies' platformsShinya Kuribayashi2011-07-252-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Enable cpu_has_clo_clz only when CONFIG_CPU_MIPS32 or CONFIG_CPU_MIPS64 is selected. This will optimize fls() and __fls() to use CLZ insn, and eventually ffs() and __ffs() as well. Malta and MIPSSim are development platforms, and need to take care of various processor configurations, release rivisions and so on, even across different MIPS ISAs. For such platforms we have to be careful, for instance, with turning on cpu_has_mips{32,64}r[12] features. As for CLZ, all MIPS32/64 processors support it, regardless of release revisions. Signed-off-by: Shinya Kuribayashi <skuribay@pobox.com> To: David VomLehn <dvomlehn@cisco.com> To: macro@linux-mips.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1453/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: PowerTV: Provide cpu-feature-overrides.hDavid VomLehn2011-07-251-0/+59
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This will optimize fls() and __fls() to use CLZ throughout the kernel, and any other optimizations that depend on constant cpu_has_* values will also be used. Signed-off-by: David VomLehn <dvomlehn@cisco.com> Signed-off-by: Shinya Kuribayashi <skuribay@pobox.com> To: David VomLehn <dvomlehn@cisco.com> To: macro@linux-mips.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1452/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: Remove pointless return statement from empty void functions.Ralf Baechle2011-07-2511-15/+0
| | | | | | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org> To: Sergei Shtylyov <sshtylyov@mvista.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2391/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: Limit fixrange_init() to the FIXMAP regionKevin Cernekee2011-07-253-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | fixrange_init() allocates page tables for all addresses higher than FIXADDR_TOP. On processors that override the default FIXADDR_TOP address of 0xfffe_0000, this can consume up to 4 pages (1 page per 4MB) for pgd's that are never used. Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/1980/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: Install handlers for software IRQsKevin Cernekee2011-07-251-8/+6
| | | | | | | | | | | | | | | | | | | | | | BMIPS4350/4380/5000 CMT/SMT all use SW INT0/INT1 for inter-thread signaling. Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/1709/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: Move FIXADDR_TOP into spaces.hKevin Cernekee2011-07-255-9/+56
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Memory maps and addressing quirks are normally defined in <spaces.h>. There are already three targets that need to override FIXADDR_TOP, and others exist. This will be a cleaner approach than adding lots of ifdefs in fixmap.h . Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Cc: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/1573/ Acked-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: Add SYNC after cacheflushKevin Cernekee2011-07-251-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On processors with deep write buffers, it is likely that many cycles will pass between a CACHE instruction and the time the data actually gets written out to DRAM. Add a SYNC instruction to ensure that the buffers get emptied before the flush functions return. Actual problem seen in the wild: 1) dma_alloc_coherent() allocates cached memory 2) memset() is called to clear the new pages 3) dma_cache_wback_inv() is called to flush the zero data out to memory 4) dma_alloc_coherent() returns an uncached (kseg1) pointer to the freshly allocated pages 5) Caller writes data through the kseg1 pointer 6) Buffered writeback data finally gets flushed out to DRAM 7) Part of caller's data is inexplicably zeroed out This patch adds SYNC between steps 3 and 4, which fixed the problem. Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: pfn_valid() is broken on low memory HIGHMEM systemsKevin Cernekee2011-07-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pfn_valid() compares the PFN to max_mapnr: __pfn >= min_low_pfn && __pfn < max_mapnr; On HIGHMEM kernels, highend_pfn is used to set the value of max_mapnr. Unfortunately, highend_pfn is left at zero if the system does not actually have enough RAM to reach into the HIGHMEM range. This causes pfn_valid() to always return false, and when debug checks are enabled the kernel will fail catastrophically: Memory: 22432k/32768k available (2249k kernel code, 10336k reserved, 653k data, 1352k init, 0k highmem) NR_IRQS:128 kfree_debugcheck: out of range ptr 81c02900h. Kernel bug detected[#1]: Cpu 0 $ 0 : 00000000 10008400 00000034 00000000 $ 4 : 8003e160 802a0000 8003e160 00000000 $ 8 : 00000000 0000003e 00000747 00000747 ... On such a configuration, max_low_pfn should be used to set max_mapnr. This was seen on 2.6.34. Signed-off-by: Kevin Cernekee <cernekee@gmail.com> To: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/1992/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: HIGHMEM DMA on noncoherent MIPS32 processorsDezhong Diao2011-07-251-46/+68
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [v4: Patch applies to linux-queue.git with kmap_atomic patches: https://patchwork.kernel.org/patch/189932/ https://patchwork.kernel.org/patch/194552/ https://patchwork.kernel.org/patch/189912/ ] The MIPS DMA coherency functions do not work properly (i.e. kernel oops) when HIGHMEM pages are passed in as arguments. Use kmap_atomic() to temporarily map high pages for cache maintenance operations. Tested on a 2.6.36-rc7 1GB HIGHMEM SMP no-alias system. Signed-off-by: Dezhong Diao <dediao@cisco.com> Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Cc: Dezhong Diao <dediao@cisco.com> Cc: David Daney <ddaney@caviumnetworks.com> Cc: David VomLehn <dvomlehn@cisco.com> Cc: Sergei Shtylyov <sshtylyov@mvista.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/1695/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: topdown mmap supportJian Peng2011-07-252-23/+171
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch introduced topdown mmap support in user process address space allocation policy. Recently, we ran some large applications that use mmap heavily and lead to OOM due to inflexible mmap allocation policy on MIPS32. Since most other major archs supported it for years, it is reasonable to follow the trend and reduce the pain of porting applications. Due to cache aliasing concern, arch_get_unmapped_area_topdown() and other helper functions are implemented in arch/mips/kernel/syscall.c. Signed-off-by: Jian Peng <jipeng2005@gmail.com> Cc: David Daney <ddaney@caviumnetworks.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2389/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: Remove redundant addr_limit assignment on exec.Mathias Krause2011-07-251-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The address limit is already set in flush_old_exec() via set_fs(USER_DS) so this assignment is redundant. [ralf@linux-mips.org: also see dac853ae89043f1b7752875300faf614de43c74b for further explanation.] Signed-off-by: Mathias Krause <minipli@googlemail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/2466/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: AR7: Replace __attribute__((__packed__)) with __packedFlorian Fainelli2011-07-251-1/+1
| | | | | | | | | | | | | | Signed-off-by: Florian Fainelli <florian@openwrt.org> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2491/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org
| * MIPS: AR7: Remove 'space before tabs' in platform.cFlorian Fainelli2011-07-251-1/+1
| | | | | | | | | | | | | | Signed-off-by: Florian Fainelli <florian@openwrt.org> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2490/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: Lantiq: Add missing clk_enable and clk_disable functions.John Crispin2011-07-201-0/+13
| | | | | | | | | | | | | | Signed-of-by: John Crispin <blogic@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2465/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: AR7: Fix trailing semicolon bug in clock.cFlorian Fainelli2011-07-201-1/+1
| | | | | | | | | | | | | | Signed-off-by: Florian Fainelli <florian@openwrt.org> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2489/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MAINTAINERS: Update MIPS entry.Ralf Baechle2011-07-201-1/+2
| | | | | | | | | | | | | | o Add entry for MIPS patchworks o Reorder entries for readability. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: BCM63xx: Remove duplicate PERF_IRQSTAT_REG definitionJonas Gorski2011-07-201-1/+0
| | | | | | | | | | | | | | | | Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com> Cc: linux-mips@linux-mips.org Acked-by: Florian Fainelli <florian@openwrt.org> Patchwork: https://patchwork.linux-mips.org/patch/2461/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: Netlogic: SMP fixes for XLR/XLS platform code.Jayachandran C2011-07-202-12/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | Fix few issues in the Netlogic code: - Use handle_percpu_irq to handle per-cpu interrupts - Remove unused function nlm_common_ipi_handler() - Call scheduler_ipi() on SMP_RESCHEDULE_YOURSELF - Enable interrupts in nlm_smp_finish() Signed-off-by: Jayachandran C <jayachandranc@netlogicmicro.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2460/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: SB1250: Restore dropped irq_mask functionThomas Gleixner2011-07-201-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | Commit d6d5d5c4a (MIPS: Sibyte: Convert to new irq_chip functions) removed the mask function which breaks irq_shutdown(). Restore it. Reported-by: Matt Turner <mattst88@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2460/ Tested-by: Matt Turner <mattst88@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: MIPSsim: Fix uniprocessor build.Ralf Baechle2011-07-201-0/+1
| | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: ARC: Fix build of firmware library on uniprocessor.Ralf Baechle2011-07-201-0/+2
| | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: XLR, XLS: Move makefile bits to were they belong.Ralf Baechle2011-07-203-12/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | This patch combines linux-mips.org patches 637d69600fb1773da56487271ec2a79c33d237ed [MIPS: Netlogic: Yank out crap.] and 5e3c263b9658a4b1c6c5577793e9347efb44854e [MIPS: XLR, XLS: Add Kbuild files for platform.] Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Jayachandran C <jayachandranc@netlogicmicro.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2415/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: Malta: Fix crash in SMP kernel on non-CMP systems.Ralf Baechle2011-07-204-24/+56
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since 6be63bbbdab66b9185dc6f67c8b1bacb6f37f946 (lmo) rsp. af3a1f6f4813907e143f87030cde67a9971db533 (kernel.org) the Malta code does no longer probe for presence of GCMP if CMP is not configured. This means that the variable gcmp_present well be left at its default value of -1 which normally is meant to indicate that GCMP has not yet been mmapped. This non-zero value is now interpreted as GCMP being present resulting in a write attempt to a GCMP register resulting in a crash. Reported and a build fix on top of my fix by Rob Landley <rob@landley.net>. Reported-by: Rob Landley <rob@landley.net> Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Patchwork: https://patchwork.linux-mips.org/patch/2413/
| * MIPS: Wire up sendmmsg and renumber setns syscall.Ralf Baechle2011-07-205-9/+16
| | | | | | | | | | | | | | | | | | | | Renumbering was necessary because I had already wired up setns(2) in the linux-mips.org tree in commit c3fce54644cabbb90700cc3acc040718a377f609 [MIPS: Wire up new sendmmsg syscall.] but the same syscall numbers were used by 7b21fddd087678a70ad64afc0f632e0f1071b092 [ns: Wire up the setns system call] resulting in a conflict. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: SMTC: Fix build.Ralf Baechle2011-07-201-0/+1
| | | | | | | | | | | | | | | | | | | | Commit ee6114202e48dc282c6d04741e9c5d7171eb8bb8 (lmo) rsp. 1685f3b158a244d4f6e205e67c84483fffcb2d9f (kernel.org) ["MIPS: SMTC: Move declaration of smtc_init_secondary to <asm/smtc.h>."] didn't quite do that - it rather lost the declaration of smtc_init_secondary resulting in a build error. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: Malta SMTC: Fix build.Ralf Baechle2011-07-201-1/+1
| | | | | | | | | | | | | | | | | | Commit a561b02a2577aec51277ba39c82bd192a79c0267 (lmo) rsp. 7c8d948f1633da5ff81e4f5b31ef237d74c40127 (kernel.org) ["MIPS: i8259: Convert to new irq_chip functions"] missed one location to modify resulting in build breakage. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: GT64120: Remove useless inclusion of clocksource.h.Ralf Baechle2011-07-201-2/+0
| | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: NILE4: Remove useless inclusion of GT64120 header.Ralf Baechle2011-07-201-1/+0
| | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* | Merge branch 'for-linus' of ↵Linus Torvalds2011-07-2617-145/+306
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (23 commits) ceph: document unlocked d_parent accesses ceph: explicitly reference rename old_dentry parent dir in request ceph: document locking for ceph_set_dentry_offset ceph: avoid d_parent in ceph_dentry_hash; fix ceph_encode_fh() hashing bug ceph: protect d_parent access in ceph_d_revalidate ceph: protect access to d_parent ceph: handle racing calls to ceph_init_dentry ceph: set dir complete frag after adding capability rbd: set blk_queue request sizes to object size ceph: set up readahead size when rsize is not passed rbd: cancel watch request when releasing the device ceph: ignore lease mask ceph: fix ceph_lookup_open intent usage ceph: only link open operations to directory unsafe list if O_CREAT|O_TRUNC ceph: fix bad parent_inode calc in ceph_lookup_open ceph: avoid carrying Fw cap during write into page cache libceph: don't time out osd requests that haven't been received ceph: report f_bfree based on kb_avail rather than diffing. ceph: only queue capsnap if caps are dirty ceph: fix snap writeback when racing with writes ...
| * | ceph: document unlocked d_parent accessesSage Weil2011-07-262-4/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | For the most part we don't care about racing with rename when directing MDS requests; either the old or new parent is fine. Document that, and do some minor cleanup. Reviewed-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
| * | ceph: explicitly reference rename old_dentry parent dir in requestSage Weil2011-07-264-11/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We carry a pin on the parent directory for the rename source and dest dentries. For the source it's r_locked_dir; we need to explicitly reference the old_dentry parent as well, since the dentry's d_parent may change between when the request was created and pinned and when it is freed. Reviewed-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
| * | ceph: document locking for ceph_set_dentry_offsetSage Weil2011-07-261-1/+3
| | | | | | | | | | | | | | | Reviewed-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
| * | ceph: avoid d_parent in ceph_dentry_hash; fix ceph_encode_fh() hashing bugSage Weil2011-07-264-13/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Have caller pass in a safely-obtained reference to the parent directory for calculating a dentry's hash valud. While we're here, simpify the flow through ceph_encode_fh() so that there is a single exit point and cleanup. Also fix a bug with the dentry hash calculation: calculate the hash for the dentry we were given, not its parent. Reviewed-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
| * | ceph: protect d_parent access in ceph_d_revalidateSage Weil2011-07-261-15/+17
| | | | | | | | | | | | | | | | | | | | | | | | Protect d_parent with d_lock. Carry a reference. Simplify the flow so that there is a single exit point and cleanup. Reviewed-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
| * | ceph: protect access to d_parentSage Weil2011-07-266-15/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | d_parent is protected by d_lock: use it when looking up a dentry's parent directory inode. Also take a reference and drop it in the caller to avoid a use-after-free. Reported-by: Al Viro <viro@ZenIV.linux.org.uk> Reviewed-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
| * | ceph: handle racing calls to ceph_init_dentrySage Weil2011-07-261-9/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ->lookup() and prepopulate_readdir() callers are working with unhashed dentries, so we don't have to worry. The export.c callers, though, need to initialize something they got back from d_obtain_alias() and are potentially racing with other callers. Make sure we don't return unless the dentry is properly initialized (by us or someone else). Reported-by: Al Viro <viro@ZenIV.linux.org.uk> Reviewed-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
| * | ceph: set dir complete frag after adding capabilitySage Weil2011-07-261-13/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Curretly ceph_add_cap clears the complete bit if we are newly issued the FILE_SHARED cap, which is normally the case for a newly issue cap on a new directory. That means we clear the just-set bit. Move the check that sets the flag to after the cap is added/updated. Reviewed-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
| * | rbd: set blk_queue request sizes to object sizeJosh Durgin2011-07-261-0/+15
| | | | | | | | | | | | | | | | | | | | | This improves performance since more requests can be merged. Reviewed-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Josh Durgin <josh.durgin@dreamhost.com>
| * | ceph: set up readahead size when rsize is not passedYehuda Sadeh2011-07-261-0/+4
| | | | | | | | | | | | | | | | | | | | | This should improve the default read performance, as without it readahead is practically disabled. Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
| * | rbd: cancel watch request when releasing the deviceYehuda Sadeh2011-07-261-1/+30
| | | | | | | | | | | | | | | | | | | | | | | | We were missing this cleanup, so when a device was released the osd didn't clean up its watchers list, so following notifications could be slow as osd needed to timeout on the client. Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
| * | ceph: ignore lease maskSage Weil2011-07-263-18/+12
| | | | | | | | | | | | | | | | | | | | | | | | The lease mask is no longer used (and it changed a while back). Instead, use a non-zero duration to indicate that there is a lease being issued. Reviewed-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
| * | ceph: fix ceph_lookup_open intent usageSage Weil2011-07-263-19/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We weren't properly calling lookup_instantiate_filp when setting up the lookup intent, which could lead to file leakage on errors. So: - use separate helper for the hidden snapdir translation, immediately following the mds request - use ceph_finish_lookup for the final dentry/return value dance in the exit path - lookup_instantiate_filp on success Reported-by: Al Viro <viro@ZenIV.linux.org.uk> Reviewed-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
| * | ceph: only link open operations to directory unsafe list if O_CREAT|O_TRUNCSage Weil2011-07-261-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | We only need to put these on the directory unsafe list if they have side effects that fsync(2) should flush out. Reviewed-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
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