Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull vhost bugfix from Michael Tsirkin:
 "This includes a single bugfix for vhost-scsi"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  vhost/scsi: fix reuse of &vq->iov[out] in response

diff --git a/arch/arc/include/asm/entry.h b/arch/arc/include/asm/entry.h
index ad7860c..51597f3 100644 (file)
--- a/arch/arc/include/asm/entry.h
+++ b/arch/arc/include/asm/entry.h
@@ -142,7 +142,7 @@
 
 #ifdef CONFIG_ARC_CURR_IN_REG
        ; Retrieve orig r25 and save it with rest of callee_regs
-       ld.as   r12, [r12, PT_user_r25]
+       ld      r12, [r12, PT_user_r25]
        PUSH    r12
 #else
        PUSH    r25
@@ -198,7 +198,7 @@
 
        ; SP is back to start of pt_regs
 #ifdef CONFIG_ARC_CURR_IN_REG
-       st.as   r12, [sp, PT_user_r25]
+       st      r12, [sp, PT_user_r25]
 #endif
 .endm
 

diff --git a/arch/arc/include/asm/irqflags-compact.h b/arch/arc/include/asm/irqflags-compact.h
index c1d3645..4c6eed8 100644 (file)
--- a/arch/arc/include/asm/irqflags-compact.h
+++ b/arch/arc/include/asm/irqflags-compact.h
@@ -188,10 +188,10 @@ static inline int arch_irqs_disabled(void)
 .endm
 
 .macro IRQ_ENABLE  scratch
+       TRACE_ASM_IRQ_ENABLE
        lr      \scratch, [status32]
        or      \scratch, \scratch, (STATUS_E1_MASK | STATUS_E2_MASK)
        flag    \scratch
-       TRACE_ASM_IRQ_ENABLE
 .endm
 
 #endif /* __ASSEMBLY__ */

diff --git a/arch/arc/include/asm/pgtable.h b/arch/arc/include/asm/pgtable.h
index 0f92d97..89eeb37 100644 (file)
--- a/arch/arc/include/asm/pgtable.h
+++ b/arch/arc/include/asm/pgtable.h
@@ -280,7 +280,7 @@ static inline void pmd_set(pmd_t *pmdp, pte_t *ptep)
 
 #define pte_page(pte)          pfn_to_page(pte_pfn(pte))
 #define mk_pte(page, prot)     pfn_pte(page_to_pfn(page), prot)
-#define pfn_pte(pfn, prot)     (__pte(((pte_t)(pfn) << PAGE_SHIFT) | pgprot_val(prot)))
+#define pfn_pte(pfn, prot)     __pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
 
 /* Don't use virt_to_pfn for macros below: could cause truncations for PAE40*/
 #define pte_pfn(pte)           (pte_val(pte) >> PAGE_SHIFT)

diff --git a/arch/arc/include/uapi/asm/elf.h b/arch/arc/include/uapi/asm/elf.h
index 0f99ac8..0037a58 100644 (file)
--- a/arch/arc/include/uapi/asm/elf.h
+++ b/arch/arc/include/uapi/asm/elf.h
@@ -13,8 +13,15 @@
 
 /* Machine specific ELF Hdr flags */
 #define EF_ARC_OSABI_MSK       0x00000f00
-#define EF_ARC_OSABI_ORIG      0x00000000   /* MUST be zero for back-compat */
-#define EF_ARC_OSABI_CURRENT   0x00000300   /* v3 (no legacy syscalls) */
+
+#define EF_ARC_OSABI_V3                0x00000300   /* v3 (no legacy syscalls) */
+#define EF_ARC_OSABI_V4                0x00000400   /* v4 (64bit data any reg align) */
+
+#if __GNUC__ < 6
+#define EF_ARC_OSABI_CURRENT   EF_ARC_OSABI_V3
+#else
+#define EF_ARC_OSABI_CURRENT   EF_ARC_OSABI_V4
+#endif
 
 typedef unsigned long elf_greg_t;
 typedef unsigned long elf_fpregset_t;

diff --git a/arch/arc/kernel/arcksyms.c b/arch/arc/kernel/arcksyms.c
index 4d9e777..000dd04 100644 (file)
--- a/arch/arc/kernel/arcksyms.c
+++ b/arch/arc/kernel/arcksyms.c
@@ -28,6 +28,7 @@ extern void __muldf3(void);
 extern void __divdf3(void);
 extern void __floatunsidf(void);
 extern void __floatunsisf(void);
+extern void __udivdi3(void);
 
 EXPORT_SYMBOL(__ashldi3);
 EXPORT_SYMBOL(__ashrdi3);
@@ -45,6 +46,7 @@ EXPORT_SYMBOL(__muldf3);
 EXPORT_SYMBOL(__divdf3);
 EXPORT_SYMBOL(__floatunsidf);
 EXPORT_SYMBOL(__floatunsisf);
+EXPORT_SYMBOL(__udivdi3);
 
 /* ARC optimised assembler routines */
 EXPORT_SYMBOL(memset);

diff --git a/arch/arc/kernel/process.c b/arch/arc/kernel/process.c
index b5db9e7..be1972b 100644 (file)
--- a/arch/arc/kernel/process.c
+++ b/arch/arc/kernel/process.c
@@ -199,7 +199,7 @@ int elf_check_arch(const struct elf32_hdr *x)
        }
 
        eflags = x->e_flags;
-       if ((eflags & EF_ARC_OSABI_MSK) < EF_ARC_OSABI_CURRENT) {
+       if ((eflags & EF_ARC_OSABI_MSK) != EF_ARC_OSABI_CURRENT) {
                pr_err("ABI mismatch - you need newer toolchain\n");
                force_sigsegv(SIGSEGV, current);
                return 0;

diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c
index a946400..f52a0d0 100644 (file)
--- a/arch/arc/kernel/setup.c
+++ b/arch/arc/kernel/setup.c
@@ -291,8 +291,10 @@ static char *arc_extn_mumbojumbo(int cpu_id, char *buf, int len)
                               cpu->dccm.base_addr, TO_KB(cpu->dccm.sz),
                               cpu->iccm.base_addr, TO_KB(cpu->iccm.sz));
 
-       n += scnprintf(buf + n, len - n,
-                      "OS ABI [v3]\t: no-legacy-syscalls\n");
+       n += scnprintf(buf + n, len - n, "OS ABI [v%d]\t: %s\n",
+                       EF_ARC_OSABI_CURRENT >> 8,
+                       EF_ARC_OSABI_CURRENT == EF_ARC_OSABI_V3 ?
+                       "no-legacy-syscalls" : "64-bit data any register aligned");
 
        return buf;
 }

diff --git a/arch/arc/mm/cache.c b/arch/arc/mm/cache.c
index 5a294b2..0b10efe 100644 (file)
--- a/arch/arc/mm/cache.c
+++ b/arch/arc/mm/cache.c
@@ -921,6 +921,15 @@ void arc_cache_init(void)
 
        printk(arc_cache_mumbojumbo(0, str, sizeof(str)));
 
+       /*
+        * Only master CPU needs to execute rest of function:
+        *  - Assume SMP so all cores will have same cache config so
+        *    any geomtry checks will be same for all
+        *  - IOC setup / dma callbacks only need to be setup once
+        */
+       if (cpu)
+               return;
+
        if (IS_ENABLED(CONFIG_ARC_HAS_ICACHE)) {
                struct cpuinfo_arc_cache *ic = &cpuinfo_arc700[cpu].icache;
 

diff --git a/arch/arc/mm/highmem.c b/arch/arc/mm/highmem.c
index 04f8332..77ff64a 100644 (file)
--- a/arch/arc/mm/highmem.c
+++ b/arch/arc/mm/highmem.c
@@ -61,6 +61,7 @@ void *kmap(struct page *page)
 
        return kmap_high(page);
 }
+EXPORT_SYMBOL(kmap);
 
 void *kmap_atomic(struct page *page)
 {

diff --git a/arch/x86/crypto/sha256-mb/sha256_mb.c b/arch/x86/crypto/sha256-mb/sha256_mb.c
index 89fa85e..6f97fb3 100644 (file)
--- a/arch/x86/crypto/sha256-mb/sha256_mb.c
+++ b/arch/x86/crypto/sha256-mb/sha256_mb.c
@@ -485,10 +485,10 @@ static int sha_complete_job(struct mcryptd_hash_request_ctx *rctx,
 
                        req = cast_mcryptd_ctx_to_req(req_ctx);
                        if (irqs_disabled())
-                               rctx->complete(&req->base, ret);
+                               req_ctx->complete(&req->base, ret);
                        else {
                                local_bh_disable();
-                               rctx->complete(&req->base, ret);
+                               req_ctx->complete(&req->base, ret);
                                local_bh_enable();
                        }
                }

diff --git a/arch/x86/crypto/sha256-mb/sha256_mb_mgr_flush_avx2.S b/arch/x86/crypto/sha256-mb/sha256_mb_mgr_flush_avx2.S
index b691da9..a78a069 100644 (file)
--- a/arch/x86/crypto/sha256-mb/sha256_mb_mgr_flush_avx2.S
+++ b/arch/x86/crypto/sha256-mb/sha256_mb_mgr_flush_avx2.S
@@ -265,13 +265,14 @@ ENTRY(sha256_mb_mgr_get_comp_job_avx2)
        vpinsrd $1, _args_digest+1*32(state, idx, 4), %xmm0, %xmm0
        vpinsrd $2, _args_digest+2*32(state, idx, 4), %xmm0, %xmm0
        vpinsrd $3, _args_digest+3*32(state, idx, 4), %xmm0, %xmm0
-       movl    _args_digest+4*32(state, idx, 4), tmp2_w
+       vmovd   _args_digest(state , idx, 4) , %xmm0
        vpinsrd $1, _args_digest+5*32(state, idx, 4), %xmm1, %xmm1
        vpinsrd $2, _args_digest+6*32(state, idx, 4), %xmm1, %xmm1
        vpinsrd $3, _args_digest+7*32(state, idx, 4), %xmm1, %xmm1
 
-       vmovdqu %xmm0, _result_digest(job_rax)
-       movl    tmp2_w, _result_digest+1*16(job_rax)
+        vmovdqu %xmm0, _result_digest(job_rax)
+        offset =  (_result_digest + 1*16)
+        vmovdqu %xmm1, offset(job_rax)
 
        pop     %rbx
 

diff --git a/arch/x86/crypto/sha512-mb/sha512_mb.c b/arch/x86/crypto/sha512-mb/sha512_mb.c
index f4cf5b7..d210174 100644 (file)
--- a/arch/x86/crypto/sha512-mb/sha512_mb.c
+++ b/arch/x86/crypto/sha512-mb/sha512_mb.c
@@ -497,10 +497,10 @@ static int sha_complete_job(struct mcryptd_hash_request_ctx *rctx,
 
                        req = cast_mcryptd_ctx_to_req(req_ctx);
                        if (irqs_disabled())
-                               rctx->complete(&req->base, ret);
+                               req_ctx->complete(&req->base, ret);
                        else {
                                local_bh_disable();
-                               rctx->complete(&req->base, ret);
+                               req_ctx->complete(&req->base, ret);
                                local_bh_enable();
                        }
                }

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 98dd47a..66a9410 100644 (file)
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -50,6 +50,7 @@ config GPIO_DEVRES
 config OF_GPIO
        def_bool y
        depends on OF
+       depends on HAS_IOMEM
 
 config GPIO_ACPI
        def_bool y
@@ -188,7 +189,7 @@ config GPIO_EP93XX
 config GPIO_ETRAXFS
        bool "Axis ETRAX FS General I/O"
        depends on CRIS || COMPILE_TEST
-       depends on OF
+       depends on OF_GPIO
        select GPIO_GENERIC
        select GPIOLIB_IRQCHIP
        help
@@ -214,7 +215,7 @@ config GPIO_GENERIC_PLATFORM
 
 config GPIO_GRGPIO
        tristate "Aeroflex Gaisler GRGPIO support"
-       depends on OF
+       depends on OF_GPIO
        select GPIO_GENERIC
        select IRQ_DOMAIN
        help
@@ -312,7 +313,7 @@ config GPIO_MPC8XXX
 config GPIO_MVEBU
        def_bool y
        depends on PLAT_ORION
-       depends on OF
+       depends on OF_GPIO
        select GENERIC_IRQ_CHIP
 
 config GPIO_MXC
@@ -405,7 +406,7 @@ config GPIO_TEGRA
        bool "NVIDIA Tegra GPIO support"
        default ARCH_TEGRA
        depends on ARCH_TEGRA || COMPILE_TEST
-       depends on OF
+       depends on OF_GPIO
        help
          Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
 
@@ -1099,7 +1100,7 @@ menu "SPI GPIO expanders"
 
 config GPIO_74X164
        tristate "74x164 serial-in/parallel-out 8-bits shift register"
-       depends on OF
+       depends on OF_GPIO
        help
          Driver for 74x164 compatible serial-in/parallel-out 8-outputs
          shift registers. This driver can be used to provide access

diff --git a/drivers/gpio/gpio-max730x.c b/drivers/gpio/gpio-max730x.c
index 0880736..946d091 100644 (file)
--- a/drivers/gpio/gpio-max730x.c
+++ b/drivers/gpio/gpio-max730x.c
@@ -192,6 +192,10 @@ int __max730x_probe(struct max7301 *ts)
        ts->chip.parent = dev;
        ts->chip.owner = THIS_MODULE;
 
+       ret = gpiochip_add_data(&ts->chip, ts);
+       if (ret)
+               goto exit_destroy;
+
        /*
         * initialize pullups according to platform data and cache the
         * register values for later use.
@@ -213,10 +217,6 @@ int __max730x_probe(struct max7301 *ts)
                }
        }
 
-       ret = gpiochip_add_data(&ts->chip, ts);
-       if (ret)
-               goto exit_destroy;
-
        return ret;
 
 exit_destroy:

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index d64d2a5..ccb401e 100644 (file)
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1699,11 +1699,11 @@ static int f2fs_write_end(struct file *file,
        trace_f2fs_write_end(inode, pos, len, copied);
 
        set_page_dirty(page);
-       f2fs_put_page(page, 1);
 
        if (pos + copied > i_size_read(inode))
                f2fs_i_size_write(inode, pos + copied);
 
+       f2fs_put_page(page, 1);
        f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
        return copied;
 }

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 675fa79..14f5fe2 100644 (file)
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -538,7 +538,7 @@ struct f2fs_nm_info {
        /* NAT cache management */
        struct radix_tree_root nat_root;/* root of the nat entry cache */
        struct radix_tree_root nat_set_root;/* root of the nat set cache */
-       struct percpu_rw_semaphore nat_tree_lock;       /* protect nat_tree_lock */
+       struct rw_semaphore nat_tree_lock;      /* protect nat_tree_lock */
        struct list_head nat_entries;   /* cached nat entry list (clean) */
        unsigned int nat_cnt;           /* the # of cached nat entries */
        unsigned int dirty_nat_cnt;     /* total num of nat entries in set */
@@ -787,7 +787,7 @@ struct f2fs_sb_info {
        struct f2fs_checkpoint *ckpt;           /* raw checkpoint pointer */
        struct inode *meta_inode;               /* cache meta blocks */
        struct mutex cp_mutex;                  /* checkpoint procedure lock */
-       struct percpu_rw_semaphore cp_rwsem;            /* blocking FS operations */
+       struct rw_semaphore cp_rwsem;           /* blocking FS operations */
        struct rw_semaphore node_write;         /* locking node writes */
        wait_queue_head_t cp_wait;
        unsigned long last_time[MAX_TIME];      /* to store time in jiffies */
@@ -1074,22 +1074,22 @@ static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
 
 static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
 {
-       percpu_down_read(&sbi->cp_rwsem);
+       down_read(&sbi->cp_rwsem);
 }
 
 static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
 {
-       percpu_up_read(&sbi->cp_rwsem);
+       up_read(&sbi->cp_rwsem);
 }
 
 static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
 {
-       percpu_down_write(&sbi->cp_rwsem);
+       down_write(&sbi->cp_rwsem);
 }
 
 static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
 {
-       percpu_up_write(&sbi->cp_rwsem);
+       up_write(&sbi->cp_rwsem);
 }
 
 static inline int __get_cp_reason(struct f2fs_sb_info *sbi)

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 0e493f6..47abb96 100644 (file)
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -2086,15 +2086,19 @@ static int f2fs_move_file_range(struct file *file_in, loff_t pos_in,
        if (unlikely(f2fs_readonly(src->i_sb)))
                return -EROFS;
 
-       if (S_ISDIR(src->i_mode) || S_ISDIR(dst->i_mode))
-               return -EISDIR;
+       if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode))
+               return -EINVAL;
 
        if (f2fs_encrypted_inode(src) || f2fs_encrypted_inode(dst))
                return -EOPNOTSUPP;
 
        inode_lock(src);
-       if (src != dst)
-               inode_lock(dst);
+       if (src != dst) {
+               if (!inode_trylock(dst)) {
+                       ret = -EBUSY;
+                       goto out;
+               }
+       }
 
        ret = -EINVAL;
        if (pos_in + len > src->i_size || pos_in + len < pos_in)
@@ -2152,6 +2156,7 @@ static int f2fs_move_file_range(struct file *file_in, loff_t pos_in,
 out_unlock:
        if (src != dst)
                inode_unlock(dst);
+out:
        inode_unlock(src);
        return ret;
 }

diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index b2fa4b6..f75d197 100644 (file)
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -206,14 +206,14 @@ int need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid)
        struct nat_entry *e;
        bool need = false;
 
-       percpu_down_read(&nm_i->nat_tree_lock);
+       down_read(&nm_i->nat_tree_lock);
        e = __lookup_nat_cache(nm_i, nid);
        if (e) {
                if (!get_nat_flag(e, IS_CHECKPOINTED) &&
                                !get_nat_flag(e, HAS_FSYNCED_INODE))
                        need = true;
        }
-       percpu_up_read(&nm_i->nat_tree_lock);
+       up_read(&nm_i->nat_tree_lock);
        return need;
 }
 
@@ -223,11 +223,11 @@ bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid)
        struct nat_entry *e;
        bool is_cp = true;
 
-       percpu_down_read(&nm_i->nat_tree_lock);
+       down_read(&nm_i->nat_tree_lock);
        e = __lookup_nat_cache(nm_i, nid);
        if (e && !get_nat_flag(e, IS_CHECKPOINTED))
                is_cp = false;
-       percpu_up_read(&nm_i->nat_tree_lock);
+       up_read(&nm_i->nat_tree_lock);
        return is_cp;
 }
 
@@ -237,13 +237,13 @@ bool need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino)
        struct nat_entry *e;
        bool need_update = true;
 
-       percpu_down_read(&nm_i->nat_tree_lock);
+       down_read(&nm_i->nat_tree_lock);
        e = __lookup_nat_cache(nm_i, ino);
        if (e && get_nat_flag(e, HAS_LAST_FSYNC) &&
                        (get_nat_flag(e, IS_CHECKPOINTED) ||
                         get_nat_flag(e, HAS_FSYNCED_INODE)))
                need_update = false;
-       percpu_up_read(&nm_i->nat_tree_lock);
+       up_read(&nm_i->nat_tree_lock);
        return need_update;
 }
 
@@ -284,7 +284,7 @@ static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni,
        struct f2fs_nm_info *nm_i = NM_I(sbi);
        struct nat_entry *e;
 
-       percpu_down_write(&nm_i->nat_tree_lock);
+       down_write(&nm_i->nat_tree_lock);
        e = __lookup_nat_cache(nm_i, ni->nid);
        if (!e) {
                e = grab_nat_entry(nm_i, ni->nid);
@@ -334,7 +334,7 @@ static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni,
                        set_nat_flag(e, HAS_FSYNCED_INODE, true);
                set_nat_flag(e, HAS_LAST_FSYNC, fsync_done);
        }
-       percpu_up_write(&nm_i->nat_tree_lock);
+       up_write(&nm_i->nat_tree_lock);
 }
 
 int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink)
@@ -342,7 +342,8 @@ int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink)
        struct f2fs_nm_info *nm_i = NM_I(sbi);
        int nr = nr_shrink;
 
-       percpu_down_write(&nm_i->nat_tree_lock);
+       if (!down_write_trylock(&nm_i->nat_tree_lock))
+               return 0;
 
        while (nr_shrink && !list_empty(&nm_i->nat_entries)) {
                struct nat_entry *ne;
@@ -351,7 +352,7 @@ int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink)
                __del_from_nat_cache(nm_i, ne);
                nr_shrink--;
        }
-       percpu_up_write(&nm_i->nat_tree_lock);
+       up_write(&nm_i->nat_tree_lock);
        return nr - nr_shrink;
 }
 
@@ -373,13 +374,13 @@ void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni)
        ni->nid = nid;
 
        /* Check nat cache */
-       percpu_down_read(&nm_i->nat_tree_lock);
+       down_read(&nm_i->nat_tree_lock);
        e = __lookup_nat_cache(nm_i, nid);
        if (e) {
                ni->ino = nat_get_ino(e);
                ni->blk_addr = nat_get_blkaddr(e);
                ni->version = nat_get_version(e);
-               percpu_up_read(&nm_i->nat_tree_lock);
+               up_read(&nm_i->nat_tree_lock);
                return;
        }
 
@@ -403,11 +404,11 @@ void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni)
        node_info_from_raw_nat(ni, &ne);
        f2fs_put_page(page, 1);
 cache:
-       percpu_up_read(&nm_i->nat_tree_lock);
+       up_read(&nm_i->nat_tree_lock);
        /* cache nat entry */
-       percpu_down_write(&nm_i->nat_tree_lock);
+       down_write(&nm_i->nat_tree_lock);
        cache_nat_entry(sbi, nid, &ne);
-       percpu_up_write(&nm_i->nat_tree_lock);
+       up_write(&nm_i->nat_tree_lock);
 }
 
 /*
@@ -1788,7 +1789,7 @@ void build_free_nids(struct f2fs_sb_info *sbi)
        ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES,
                                                        META_NAT, true);
 
-       percpu_down_read(&nm_i->nat_tree_lock);
+       down_read(&nm_i->nat_tree_lock);
 
        while (1) {
                struct page *page = get_current_nat_page(sbi, nid);
@@ -1820,7 +1821,7 @@ void build_free_nids(struct f2fs_sb_info *sbi)
                        remove_free_nid(nm_i, nid);
        }
        up_read(&curseg->journal_rwsem);
-       percpu_up_read(&nm_i->nat_tree_lock);
+       up_read(&nm_i->nat_tree_lock);
 
        ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid),
                                        nm_i->ra_nid_pages, META_NAT, false);
@@ -2209,7 +2210,7 @@ void flush_nat_entries(struct f2fs_sb_info *sbi)
        if (!nm_i->dirty_nat_cnt)
                return;
 
-       percpu_down_write(&nm_i->nat_tree_lock);
+       down_write(&nm_i->nat_tree_lock);
 
        /*
         * if there are no enough space in journal to store dirty nat
@@ -2232,7 +2233,7 @@ void flush_nat_entries(struct f2fs_sb_info *sbi)
        list_for_each_entry_safe(set, tmp, &sets, set_list)
                __flush_nat_entry_set(sbi, set);
 
-       percpu_up_write(&nm_i->nat_tree_lock);
+       up_write(&nm_i->nat_tree_lock);
 
        f2fs_bug_on(sbi, nm_i->dirty_nat_cnt);
 }
@@ -2268,8 +2269,7 @@ static int init_node_manager(struct f2fs_sb_info *sbi)
 
        mutex_init(&nm_i->build_lock);
        spin_lock_init(&nm_i->free_nid_list_lock);
-       if (percpu_init_rwsem(&nm_i->nat_tree_lock))
-               return -ENOMEM;
+       init_rwsem(&nm_i->nat_tree_lock);
 
        nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid);
        nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP);
@@ -2326,7 +2326,7 @@ void destroy_node_manager(struct f2fs_sb_info *sbi)
        spin_unlock(&nm_i->free_nid_list_lock);
 
        /* destroy nat cache */
-       percpu_down_write(&nm_i->nat_tree_lock);
+       down_write(&nm_i->nat_tree_lock);
        while ((found = __gang_lookup_nat_cache(nm_i,
                                        nid, NATVEC_SIZE, natvec))) {
                unsigned idx;
@@ -2351,9 +2351,8 @@ void destroy_node_manager(struct f2fs_sb_info *sbi)
                        kmem_cache_free(nat_entry_set_slab, setvec[idx]);
                }
        }
-       percpu_up_write(&nm_i->nat_tree_lock);
+       up_write(&nm_i->nat_tree_lock);
 
-       percpu_free_rwsem(&nm_i->nat_tree_lock);
        kfree(nm_i->nat_bitmap);
        sbi->nm_info = NULL;
        kfree(nm_i);

diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 1b86d3f..7f863a6 100644 (file)
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -706,8 +706,6 @@ static void destroy_percpu_info(struct f2fs_sb_info *sbi)
                percpu_counter_destroy(&sbi->nr_pages[i]);
        percpu_counter_destroy(&sbi->alloc_valid_block_count);
        percpu_counter_destroy(&sbi->total_valid_inode_count);
-
-       percpu_free_rwsem(&sbi->cp_rwsem);
 }
 
 static void f2fs_put_super(struct super_block *sb)
@@ -1483,9 +1481,6 @@ static int init_percpu_info(struct f2fs_sb_info *sbi)
 {
        int i, err;
 
-       if (percpu_init_rwsem(&sbi->cp_rwsem))
-               return -ENOMEM;
-
        for (i = 0; i < NR_COUNT_TYPE; i++) {
                err = percpu_counter_init(&sbi->nr_pages[i], 0, GFP_KERNEL);
                if (err)
@@ -1686,6 +1681,7 @@ try_onemore:
                sbi->write_io[i].bio = NULL;
        }
 
+       init_rwsem(&sbi->cp_rwsem);
        init_waitqueue_head(&sbi->cp_wait);
        init_sb_info(sbi);
 

diff --git a/mm/usercopy.c b/mm/usercopy.c
index 8ebae91..a3cc305 100644 (file)
--- a/mm/usercopy.c
+++ b/mm/usercopy.c
@@ -83,7 +83,7 @@ static bool overlaps(const void *ptr, unsigned long n, unsigned long low,
        unsigned long check_high = check_low + n;
 
        /* Does not overlap if entirely above or entirely below. */
-       if (check_low >= high || check_high < low)
+       if (check_low >= high || check_high <= low)
                return false;
 
        return true;
@@ -124,7 +124,7 @@ static inline const char *check_kernel_text_object(const void *ptr,
 static inline const char *check_bogus_address(const void *ptr, unsigned long n)
 {
        /* Reject if object wraps past end of memory. */
-       if (ptr + n < ptr)
+       if ((unsigned long)ptr + n < (unsigned long)ptr)
                return "<wrapped address>";
 
        /* Reject if NULL or ZERO-allocation. */

diff --git a/tools/gpio/gpio-event-mon.c b/tools/gpio/gpio-event-mon.c
index 448ed96..1c14c25 100644 (file)
--- a/tools/gpio/gpio-event-mon.c
+++ b/tools/gpio/gpio-event-mon.c
@@ -1,5 +1,5 @@
 /*
- * gpio-hammer - example swiss army knife to shake GPIO lines on a system
+ * gpio-event-mon - monitor GPIO line events from userspace
  *
  * Copyright (C) 2016 Linus Walleij
  *