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-rw-r--r--arch/arm/Kconfig1
-rw-r--r--arch/arm/vdso/vdsomunge.c17
-rw-r--r--arch/powerpc/kernel/dma.c2
-rw-r--r--block/blk-lib.c31
-rw-r--r--crypto/ablkcipher.c2
-rw-r--r--crypto/algapi.c2
-rw-r--r--crypto/api.c6
-rw-r--r--crypto/crypto_user.c2
-rw-r--r--drivers/clk/clkdev.c3
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu.h1
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu_display.c4
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c5
-rw-r--r--drivers/gpu/drm/radeon/radeon.h1
-rw-r--r--drivers/gpu/drm/radeon/radeon_pm.c35
-rw-r--r--drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c34
-rw-r--r--drivers/i2c/busses/i2c-mv64xxx.c2
-rw-r--r--drivers/i2c/busses/i2c-pnx.c10
-rw-r--r--drivers/iommu/amd_iommu.c4
-rw-r--r--drivers/iommu/amd_iommu_types.h1
-rw-r--r--drivers/iommu/amd_iommu_v2.c7
-rw-r--r--drivers/md/raid1.c13
-rw-r--r--drivers/md/raid10.c39
-rw-r--r--include/linux/blk-cgroup.h4
-rw-r--r--kernel/module.c8
24 files changed, 157 insertions, 77 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 72ad724..639411f 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -645,6 +645,7 @@ config ARCH_SHMOBILE_LEGACY
config ARCH_RPC
bool "RiscPC"
+ depends on MMU
select ARCH_ACORN
select ARCH_MAY_HAVE_PC_FDC
select ARCH_SPARSEMEM_ENABLE
diff --git a/arch/arm/vdso/vdsomunge.c b/arch/arm/vdso/vdsomunge.c
index aedec81..0cebd98 100644
--- a/arch/arm/vdso/vdsomunge.c
+++ b/arch/arm/vdso/vdsomunge.c
@@ -45,7 +45,6 @@
* it does.
*/
-#include <byteswap.h>
#include <elf.h>
#include <errno.h>
#include <fcntl.h>
@@ -59,6 +58,16 @@
#include <sys/types.h>
#include <unistd.h>
+#define swab16(x) \
+ ((((x) & 0x00ff) << 8) | \
+ (((x) & 0xff00) >> 8))
+
+#define swab32(x) \
+ ((((x) & 0x000000ff) << 24) | \
+ (((x) & 0x0000ff00) << 8) | \
+ (((x) & 0x00ff0000) >> 8) | \
+ (((x) & 0xff000000) << 24))
+
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
#define HOST_ORDER ELFDATA2LSB
#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
@@ -104,17 +113,17 @@ static void cleanup(void)
static Elf32_Word read_elf_word(Elf32_Word word, bool swap)
{
- return swap ? bswap_32(word) : word;
+ return swap ? swab32(word) : word;
}
static Elf32_Half read_elf_half(Elf32_Half half, bool swap)
{
- return swap ? bswap_16(half) : half;
+ return swap ? swab16(half) : half;
}
static void write_elf_word(Elf32_Word val, Elf32_Word *dst, bool swap)
{
- *dst = swap ? bswap_32(val) : val;
+ *dst = swap ? swab32(val) : val;
}
int main(int argc, char **argv)
diff --git a/arch/powerpc/kernel/dma.c b/arch/powerpc/kernel/dma.c
index 59503ed..3f1472a 100644
--- a/arch/powerpc/kernel/dma.c
+++ b/arch/powerpc/kernel/dma.c
@@ -303,7 +303,7 @@ int dma_set_coherent_mask(struct device *dev, u64 mask)
dev->coherent_dma_mask = mask;
return 0;
}
-EXPORT_SYMBOL_GPL(dma_set_coherent_mask);
+EXPORT_SYMBOL(dma_set_coherent_mask);
#define PREALLOC_DMA_DEBUG_ENTRIES (1 << 16)
diff --git a/block/blk-lib.c b/block/blk-lib.c
index bd40292..9ebf653 100644
--- a/block/blk-lib.c
+++ b/block/blk-lib.c
@@ -26,13 +26,6 @@ static void bio_batch_end_io(struct bio *bio)
bio_put(bio);
}
-/*
- * Ensure that max discard sectors doesn't overflow bi_size and hopefully
- * it is of the proper granularity as long as the granularity is a power
- * of two.
- */
-#define MAX_BIO_SECTORS ((1U << 31) >> 9)
-
/**
* blkdev_issue_discard - queue a discard
* @bdev: blockdev to issue discard for
@@ -50,6 +43,8 @@ int blkdev_issue_discard(struct block_device *bdev, sector_t sector,
DECLARE_COMPLETION_ONSTACK(wait);
struct request_queue *q = bdev_get_queue(bdev);
int type = REQ_WRITE | REQ_DISCARD;
+ unsigned int granularity;
+ int alignment;
struct bio_batch bb;
struct bio *bio;
int ret = 0;
@@ -61,6 +56,10 @@ int blkdev_issue_discard(struct block_device *bdev, sector_t sector,
if (!blk_queue_discard(q))
return -EOPNOTSUPP;
+ /* Zero-sector (unknown) and one-sector granularities are the same. */
+ granularity = max(q->limits.discard_granularity >> 9, 1U);
+ alignment = (bdev_discard_alignment(bdev) >> 9) % granularity;
+
if (flags & BLKDEV_DISCARD_SECURE) {
if (!blk_queue_secdiscard(q))
return -EOPNOTSUPP;
@@ -74,7 +73,7 @@ int blkdev_issue_discard(struct block_device *bdev, sector_t sector,
blk_start_plug(&plug);
while (nr_sects) {
unsigned int req_sects;
- sector_t end_sect;
+ sector_t end_sect, tmp;
bio = bio_alloc(gfp_mask, 1);
if (!bio) {
@@ -82,8 +81,22 @@ int blkdev_issue_discard(struct block_device *bdev, sector_t sector,
break;
}
- req_sects = min_t(sector_t, nr_sects, MAX_BIO_SECTORS);
+ /* Make sure bi_size doesn't overflow */
+ req_sects = min_t(sector_t, nr_sects, UINT_MAX >> 9);
+
+ /*
+ * If splitting a request, and the next starting sector would be
+ * misaligned, stop the discard at the previous aligned sector.
+ */
end_sect = sector + req_sects;
+ tmp = end_sect;
+ if (req_sects < nr_sects &&
+ sector_div(tmp, granularity) != alignment) {
+ end_sect = end_sect - alignment;
+ sector_div(end_sect, granularity);
+ end_sect = end_sect * granularity + alignment;
+ req_sects = end_sect - sector;
+ }
bio->bi_iter.bi_sector = sector;
bio->bi_end_io = bio_batch_end_io;
diff --git a/crypto/ablkcipher.c b/crypto/ablkcipher.c
index b788f16..b4ffc5b 100644
--- a/crypto/ablkcipher.c
+++ b/crypto/ablkcipher.c
@@ -706,7 +706,7 @@ struct crypto_ablkcipher *crypto_alloc_ablkcipher(const char *alg_name,
err:
if (err != -EAGAIN)
break;
- if (signal_pending(current)) {
+ if (fatal_signal_pending(current)) {
err = -EINTR;
break;
}
diff --git a/crypto/algapi.c b/crypto/algapi.c
index d130b41..59bf491 100644
--- a/crypto/algapi.c
+++ b/crypto/algapi.c
@@ -345,7 +345,7 @@ static void crypto_wait_for_test(struct crypto_larval *larval)
crypto_alg_tested(larval->alg.cra_driver_name, 0);
}
- err = wait_for_completion_interruptible(&larval->completion);
+ err = wait_for_completion_killable(&larval->completion);
WARN_ON(err);
out:
diff --git a/crypto/api.c b/crypto/api.c
index afe4610..bbc147c 100644
--- a/crypto/api.c
+++ b/crypto/api.c
@@ -172,7 +172,7 @@ static struct crypto_alg *crypto_larval_wait(struct crypto_alg *alg)
struct crypto_larval *larval = (void *)alg;
long timeout;
- timeout = wait_for_completion_interruptible_timeout(
+ timeout = wait_for_completion_killable_timeout(
&larval->completion, 60 * HZ);
alg = larval->adult;
@@ -445,7 +445,7 @@ struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask)
err:
if (err != -EAGAIN)
break;
- if (signal_pending(current)) {
+ if (fatal_signal_pending(current)) {
err = -EINTR;
break;
}
@@ -562,7 +562,7 @@ void *crypto_alloc_tfm(const char *alg_name,
err:
if (err != -EAGAIN)
break;
- if (signal_pending(current)) {
+ if (fatal_signal_pending(current)) {
err = -EINTR;
break;
}
diff --git a/crypto/crypto_user.c b/crypto/crypto_user.c
index d94d99f..237f379 100644
--- a/crypto/crypto_user.c
+++ b/crypto/crypto_user.c
@@ -375,7 +375,7 @@ static struct crypto_alg *crypto_user_skcipher_alg(const char *name, u32 type,
err = PTR_ERR(alg);
if (err != -EAGAIN)
break;
- if (signal_pending(current)) {
+ if (fatal_signal_pending(current)) {
err = -EINTR;
break;
}
diff --git a/drivers/clk/clkdev.c b/drivers/clk/clkdev.c
index c0eaf09..779b6ff 100644
--- a/drivers/clk/clkdev.c
+++ b/drivers/clk/clkdev.c
@@ -333,7 +333,8 @@ int clk_add_alias(const char *alias, const char *alias_dev_name,
if (IS_ERR(r))
return PTR_ERR(r);
- l = clkdev_create(r, alias, "%s", alias_dev_name);
+ l = clkdev_create(r, alias, alias_dev_name ? "%s" : NULL,
+ alias_dev_name);
clk_put(r);
return l ? 0 : -ENODEV;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 6647fb2..0d13e63 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -1654,6 +1654,7 @@ struct amdgpu_pm {
u8 fan_max_rpm;
/* dpm */
bool dpm_enabled;
+ bool sysfs_initialized;
struct amdgpu_dpm dpm;
const struct firmware *fw; /* SMC firmware */
uint32_t fw_version;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
index dc29ed8..6c9e090 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
@@ -184,10 +184,6 @@ int amdgpu_crtc_page_flip(struct drm_crtc *crtc,
goto cleanup;
}
- fence_get(work->excl);
- for (i = 0; i < work->shared_count; ++i)
- fence_get(work->shared[i]);
-
amdgpu_bo_get_tiling_flags(new_rbo, &tiling_flags);
amdgpu_bo_unreserve(new_rbo);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
index ed2bbe5..22a8c7d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
@@ -695,6 +695,9 @@ int amdgpu_pm_sysfs_init(struct amdgpu_device *adev)
{
int ret;
+ if (adev->pm.sysfs_initialized)
+ return 0;
+
if (adev->pm.funcs->get_temperature == NULL)
return 0;
adev->pm.int_hwmon_dev = hwmon_device_register_with_groups(adev->dev,
@@ -723,6 +726,8 @@ int amdgpu_pm_sysfs_init(struct amdgpu_device *adev)
return ret;
}
+ adev->pm.sysfs_initialized = true;
+
return 0;
}
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index f03b7eb..b6cbd81 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -1658,6 +1658,7 @@ struct radeon_pm {
u8 fan_max_rpm;
/* dpm */
bool dpm_enabled;
+ bool sysfs_initialized;
struct radeon_dpm dpm;
};
diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c
index 6a0a176..5feee3b 100644
--- a/drivers/gpu/drm/radeon/radeon_pm.c
+++ b/drivers/gpu/drm/radeon/radeon_pm.c
@@ -1528,19 +1528,23 @@ int radeon_pm_late_init(struct radeon_device *rdev)
if (rdev->pm.pm_method == PM_METHOD_DPM) {
if (rdev->pm.dpm_enabled) {
- ret = device_create_file(rdev->dev, &dev_attr_power_dpm_state);
- if (ret)
- DRM_ERROR("failed to create device file for dpm state\n");
- ret = device_create_file(rdev->dev, &dev_attr_power_dpm_force_performance_level);
- if (ret)
- DRM_ERROR("failed to create device file for dpm state\n");
- /* XXX: these are noops for dpm but are here for backwards compat */
- ret = device_create_file(rdev->dev, &dev_attr_power_profile);
- if (ret)
- DRM_ERROR("failed to create device file for power profile\n");
- ret = device_create_file(rdev->dev, &dev_attr_power_method);
- if (ret)
- DRM_ERROR("failed to create device file for power method\n");
+ if (!rdev->pm.sysfs_initialized) {
+ ret = device_create_file(rdev->dev, &dev_attr_power_dpm_state);
+ if (ret)
+ DRM_ERROR("failed to create device file for dpm state\n");
+ ret = device_create_file(rdev->dev, &dev_attr_power_dpm_force_performance_level);
+ if (ret)
+ DRM_ERROR("failed to create device file for dpm state\n");
+ /* XXX: these are noops for dpm but are here for backwards compat */
+ ret = device_create_file(rdev->dev, &dev_attr_power_profile);
+ if (ret)
+ DRM_ERROR("failed to create device file for power profile\n");
+ ret = device_create_file(rdev->dev, &dev_attr_power_method);
+ if (ret)
+ DRM_ERROR("failed to create device file for power method\n");
+ if (!ret)
+ rdev->pm.sysfs_initialized = true;
+ }
mutex_lock(&rdev->pm.mutex);
ret = radeon_dpm_late_enable(rdev);
@@ -1556,7 +1560,8 @@ int radeon_pm_late_init(struct radeon_device *rdev)
}
}
} else {
- if (rdev->pm.num_power_states > 1) {
+ if ((rdev->pm.num_power_states > 1) &&
+ (!rdev->pm.sysfs_initialized)) {
/* where's the best place to put these? */
ret = device_create_file(rdev->dev, &dev_attr_power_profile);
if (ret)
@@ -1564,6 +1569,8 @@ int radeon_pm_late_init(struct radeon_device *rdev)
ret = device_create_file(rdev->dev, &dev_attr_power_method);
if (ret)
DRM_ERROR("failed to create device file for power method\n");
+ if (!ret)
+ rdev->pm.sysfs_initialized = true;
}
}
return ret;
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c b/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c
index 8a76821..6377e81 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c
@@ -415,16 +415,16 @@ static void vmw_cmdbuf_ctx_process(struct vmw_cmdbuf_man *man,
*
* Calls vmw_cmdbuf_ctx_process() on all contexts. If any context has
* command buffers left that are not submitted to hardware, Make sure
- * IRQ handling is turned on. Otherwise, make sure it's turned off. This
- * function may return -EAGAIN to indicate it should be rerun due to
- * possibly missed IRQs if IRQs has just been turned on.
+ * IRQ handling is turned on. Otherwise, make sure it's turned off.
*/
-static int vmw_cmdbuf_man_process(struct vmw_cmdbuf_man *man)
+static void vmw_cmdbuf_man_process(struct vmw_cmdbuf_man *man)
{
- int notempty = 0;
+ int notempty;
struct vmw_cmdbuf_context *ctx;
int i;
+retry:
+ notempty = 0;
for_each_cmdbuf_ctx(man, i, ctx)
vmw_cmdbuf_ctx_process(man, ctx, &notempty);
@@ -440,10 +440,8 @@ static int vmw_cmdbuf_man_process(struct vmw_cmdbuf_man *man)
man->irq_on = true;
/* Rerun in case we just missed an irq. */
- return -EAGAIN;
+ goto retry;
}
-
- return 0;
}
/**
@@ -468,8 +466,7 @@ static void vmw_cmdbuf_ctx_add(struct vmw_cmdbuf_man *man,
header->cb_context = cb_context;
list_add_tail(&header->list, &man->ctx[cb_context].submitted);
- if (vmw_cmdbuf_man_process(man) == -EAGAIN)
- vmw_cmdbuf_man_process(man);
+ vmw_cmdbuf_man_process(man);
}
/**
@@ -488,8 +485,7 @@ static void vmw_cmdbuf_man_tasklet(unsigned long data)
struct vmw_cmdbuf_man *man = (struct vmw_cmdbuf_man *) data;
spin_lock(&man->lock);
- if (vmw_cmdbuf_man_process(man) == -EAGAIN)
- (void) vmw_cmdbuf_man_process(man);
+ vmw_cmdbuf_man_process(man);
spin_unlock(&man->lock);
}
@@ -507,6 +503,7 @@ static void vmw_cmdbuf_work_func(struct work_struct *work)
struct vmw_cmdbuf_man *man =
container_of(work, struct vmw_cmdbuf_man, work);
struct vmw_cmdbuf_header *entry, *next;
+ uint32_t dummy;
bool restart = false;
spin_lock_bh(&man->lock);
@@ -523,6 +520,8 @@ static void vmw_cmdbuf_work_func(struct work_struct *work)
if (restart && vmw_cmdbuf_startstop(man, true))
DRM_ERROR("Failed restarting command buffer context 0.\n");
+ /* Send a new fence in case one was removed */
+ vmw_fifo_send_fence(man->dev_priv, &dummy);
}
/**
@@ -682,7 +681,7 @@ static bool vmw_cmdbuf_try_alloc(struct vmw_cmdbuf_man *man,
DRM_MM_SEARCH_DEFAULT,
DRM_MM_CREATE_DEFAULT);
if (ret) {
- (void) vmw_cmdbuf_man_process(man);
+ vmw_cmdbuf_man_process(man);
ret = drm_mm_insert_node_generic(&man->mm, info->node,
info->page_size, 0, 0,
DRM_MM_SEARCH_DEFAULT,
@@ -1168,7 +1167,14 @@ int vmw_cmdbuf_set_pool_size(struct vmw_cmdbuf_man *man,
drm_mm_init(&man->mm, 0, size >> PAGE_SHIFT);
man->has_pool = true;
- man->default_size = default_size;
+
+ /*
+ * For now, set the default size to VMW_CMDBUF_INLINE_SIZE to
+ * prevent deadlocks from happening when vmw_cmdbuf_space_pool()
+ * needs to wait for space and we block on further command
+ * submissions to be able to free up space.
+ */
+ man->default_size = VMW_CMDBUF_INLINE_SIZE;
DRM_INFO("Using command buffers with %s pool.\n",
(man->using_mob) ? "MOB" : "DMA");
diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c
index 30059c1..5801227 100644
--- a/drivers/i2c/busses/i2c-mv64xxx.c
+++ b/drivers/i2c/busses/i2c-mv64xxx.c
@@ -669,8 +669,6 @@ mv64xxx_i2c_can_offload(struct mv64xxx_i2c_data *drv_data)
struct i2c_msg *msgs = drv_data->msgs;
int num = drv_data->num_msgs;
- return false;
-
if (!drv_data->offload_enabled)
return false;
diff --git a/drivers/i2c/busses/i2c-pnx.c b/drivers/i2c/busses/i2c-pnx.c
index e814a36..6f8b446 100644
--- a/drivers/i2c/busses/i2c-pnx.c
+++ b/drivers/i2c/busses/i2c-pnx.c
@@ -600,7 +600,7 @@ static int i2c_pnx_controller_suspend(struct device *dev)
{
struct i2c_pnx_algo_data *alg_data = dev_get_drvdata(dev);
- clk_disable(alg_data->clk);
+ clk_disable_unprepare(alg_data->clk);
return 0;
}
@@ -609,7 +609,7 @@ static int i2c_pnx_controller_resume(struct device *dev)
{
struct i2c_pnx_algo_data *alg_data = dev_get_drvdata(dev);
- return clk_enable(alg_data->clk);
+ return clk_prepare_enable(alg_data->clk);
}
static SIMPLE_DEV_PM_OPS(i2c_pnx_pm,
@@ -672,7 +672,7 @@ static int i2c_pnx_probe(struct platform_device *pdev)
if (IS_ERR(alg_data->ioaddr))
return PTR_ERR(alg_data->ioaddr);
- ret = clk_enable(alg_data->clk);
+ ret = clk_prepare_enable(alg_data->clk);
if (ret)
return ret;
@@ -726,7 +726,7 @@ static int i2c_pnx_probe(struct platform_device *pdev)
return 0;
out_clock:
- clk_disable(alg_data->clk);
+ clk_disable_unprepare(alg_data->clk);
return ret;
}
@@ -735,7 +735,7 @@ static int i2c_pnx_remove(struct platform_device *pdev)
struct i2c_pnx_algo_data *alg_data = platform_get_drvdata(pdev);
i2c_del_adapter(&alg_data->adapter);
- clk_disable(alg_data->clk);
+ clk_disable_unprepare(alg_data->clk);
return 0;
}
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 08d2775..532e2a2 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -1974,8 +1974,8 @@ static void set_dte_entry(u16 devid, struct protection_domain *domain, bool ats)
static void clear_dte_entry(u16 devid)
{
/* remove entry from the device table seen by the hardware */
- amd_iommu_dev_table[devid].data[0] = IOMMU_PTE_P | IOMMU_PTE_TV;
- amd_iommu_dev_table[devid].data[1] = 0;
+ amd_iommu_dev_table[devid].data[0] = IOMMU_PTE_P | IOMMU_PTE_TV;
+ amd_iommu_dev_table[devid].data[1] &= DTE_FLAG_MASK;
amd_iommu_apply_erratum_63(devid);
}
diff --git a/drivers/iommu/amd_iommu_types.h b/drivers/iommu/amd_iommu_types.h
index f659088..c9b6472 100644
--- a/drivers/iommu/amd_iommu_types.h
+++ b/drivers/iommu/amd_iommu_types.h
@@ -295,6 +295,7 @@
#define IOMMU_PTE_IR (1ULL << 61)
#define IOMMU_PTE_IW (1ULL << 62)
+#define DTE_FLAG_MASK (0x3ffULL << 32)
#define DTE_FLAG_IOTLB (0x01UL << 32)
#define DTE_FLAG_GV (0x01ULL << 55)
#define DTE_GLX_SHIFT (56)
diff --git a/drivers/iommu/amd_iommu_v2.c b/drivers/iommu/amd_iommu_v2.c
index 1131664..d21d4ed 100644
--- a/drivers/iommu/amd_iommu_v2.c
+++ b/drivers/iommu/amd_iommu_v2.c
@@ -516,6 +516,13 @@ static void do_fault(struct work_struct *work)
goto out;
}
+ if (!(vma->vm_flags & (VM_READ | VM_EXEC | VM_WRITE))) {
+ /* handle_mm_fault would BUG_ON() */
+ up_read(&mm->mmap_sem);
+ handle_fault_error(fault);
+ goto out;
+ }
+
ret = handle_mm_fault(mm, vma, address, write);
if (ret & VM_FAULT_ERROR) {
/* failed to service fault */
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index ddd8a5f..d9d031e 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -2195,7 +2195,7 @@ static int narrow_write_error(struct r1bio *r1_bio, int i)
bio_trim(wbio, sector - r1_bio->sector, sectors);
wbio->bi_iter.bi_sector += rdev->data_offset;
wbio->bi_bdev = rdev->bdev;
- if (submit_bio_wait(WRITE, wbio) == 0)
+ if (submit_bio_wait(WRITE, wbio) < 0)
/* failure! */
ok = rdev_set_badblocks(rdev, sector,
sectors, 0)
@@ -2258,15 +2258,16 @@ static void handle_write_finished(struct r1conf *conf, struct r1bio *r1_bio)
rdev_dec_pending(conf->mirrors[m].rdev,
conf->mddev);
}
- if (test_bit(R1BIO_WriteError, &r1_bio->state))
- close_write(r1_bio);
if (fail) {
spin_lock_irq(&conf->device_lock);
list_add(&r1_bio->retry_list, &conf->bio_end_io_list);
spin_unlock_irq(&conf->device_lock);
md_wakeup_thread(conf->mddev->thread);
- } else
+ } else {
+ if (test_bit(R1BIO_WriteError, &r1_bio->state))
+ close_write(r1_bio);
raid_end_bio_io(r1_bio);
+ }
}
static void handle_read_error(struct r1conf *conf, struct r1bio *r1_bio)
@@ -2385,6 +2386,10 @@ static void raid1d(struct md_thread *thread)
r1_bio = list_first_entry(&tmp, struct r1bio,
retry_list);
list_del(&r1_bio->retry_list);
+ if (mddev->degraded)
+ set_bit(R1BIO_Degraded, &r1_bio->state);
+ if (test_bit(R1BIO_WriteError, &r1_bio->state))
+ close_write(r1_bio);
raid_end_bio_io(r1_bio);
}
}
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 9f69dc5..96f3659 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -39,6 +39,7 @@
* far_copies (stored in second byte of layout)
* far_offset (stored in bit 16 of layout )
* use_far_sets (stored in bit 17 of layout )
+ * use_far_sets_bugfixed (stored in bit 18 of layout )
*
* The data to be stored is divided into chunks using chunksize. Each device
* is divided into far_copies sections. In each section, chunks are laid out
@@ -1497,6 +1498,8 @@ static void status(struct seq_file *seq, struct mddev *mddev)
seq_printf(seq, " %d offset-copies", conf->geo.far_copies);
else
seq_printf(seq, " %d far-copies", conf->geo.far_copies);
+ if (conf->geo.far_set_size != conf->geo.raid_disks)
+ seq_printf(seq, " %d devices per set", conf->geo.far_set_size);
}
seq_printf(seq, " [%d/%d] [", conf->geo.raid_disks,
conf->geo.raid_disks - mddev->degraded);
@@ -2467,7 +2470,7 @@ static int narrow_write_error(struct r10bio *r10_bio, int i)
choose_data_offset(r10_bio, rdev) +
(sector - r10_bio->sector));
wbio->bi_bdev = rdev->bdev;
- if (submit_bio_wait(WRITE, wbio) == 0)
+ if (submit_bio_wait(WRITE, wbio) < 0)
/* Failure! */
ok = rdev_set_badblocks(rdev, sector,
sectors, 0)
@@ -2654,16 +2657,17 @@ static void handle_write_completed(struct r10conf *conf, struct r10bio *r10_bio)
rdev_dec_pending(rdev, conf->mddev);
}
}
- if (test_bit(R10BIO_WriteError,
- &r10_bio->state))
- close_write(r10_bio);
if (fail) {
spin_lock_irq(&conf->device_lock);
list_add(&r10_bio->retry_list, &conf->bio_end_io_list);
spin_unlock_irq(&conf->device_lock);
md_wakeup_thread(conf->mddev->thread);
- } else
+ } else {
+ if (test_bit(R10BIO_WriteError,
+ &r10_bio->state))
+ close_write(r10_bio);
raid_end_bio_io(r10_bio);
+ }
}
}
@@ -2691,6 +2695,12 @@ static void raid10d(struct md_thread *thread)
r10_bio = list_first_entry(&tmp, struct r10bio,
retry_list);
list_del(&r10_bio->retry_list);
+ if (mddev->degraded)
+ set_bit(R10BIO_Degraded, &r10_bio->state);
+
+ if (test_bit(R10BIO_WriteError,
+ &r10_bio->state))
+ close_write(r10_bio);
raid_end_bio_io(r10_bio);
}
}
@@ -3387,7 +3397,7 @@ static int setup_geo(struct geom *geo, struct mddev *mddev, enum geo_type new)
disks = mddev->raid_disks + mddev->delta_disks;
break;
}
- if (layout >> 18)
+ if (layout >> 19)
return -1;
if (chunk < (PAGE_SIZE >> 9) ||
!is_power_of_2(chunk))
@@ -3399,7 +3409,22 @@ static int setup_geo(struct geom *geo, struct mddev *mddev, enum geo_type new)
geo->near_copies = nc;
geo->far_copies = fc;
geo->far_offset = fo;
- geo->far_set_size = (layout & (1<<17)) ? disks / fc : disks;
+ switch (layout >> 17) {
+ case 0: /* original layout. simple but not always optimal */
+ geo->far_set_size = disks;
+ break;
+ case 1: /* "improved" layout which was buggy. Hopefully no-one is
+ * actually using this, but leave code here just in case.*/
+ geo->far_set_size = disks/fc;
+ WARN(geo->far_set_size < fc,
+ "This RAID10 layout does not provide data safety - please backup and create new array\n");
+ break;
+ case 2: /* "improved" layout fixed to match documentation */
+ geo->far_set_size = fc * nc;
+ break;
+ default: /* Not a valid layout */
+ return -1;
+ }
geo->chunk_mask = chunk - 1;
geo->chunk_shift = ffz(~chunk);
return nc*fc;
diff --git a/include/linux/blk-cgroup.h b/include/linux/blk-cgroup.h
index 0a5cc7a..c02e669 100644
--- a/include/linux/blk-cgroup.h
+++ b/include/linux/blk-cgroup.h
@@ -713,9 +713,9 @@ static inline bool blkcg_bio_issue_check(struct request_queue *q,
if (!throtl) {
blkg = blkg ?: q->root_blkg;
- blkg_rwstat_add(&blkg->stat_bytes, bio->bi_flags,
+ blkg_rwstat_add(&blkg->stat_bytes, bio->bi_rw,
bio->bi_iter.bi_size);
- blkg_rwstat_add(&blkg->stat_ios, bio->bi_flags, 1);
+ blkg_rwstat_add(&blkg->stat_ios, bio->bi_rw, 1);
}
rcu_read_unlock();
diff --git a/kernel/module.c b/kernel/module.c
index b86b7bf..8f051a1 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -1063,11 +1063,15 @@ void symbol_put_addr(void *addr)
if (core_kernel_text(a))
return;
- /* module_text_address is safe here: we're supposed to have reference
- * to module from symbol_get, so it can't go away. */
+ /*
+ * Even though we hold a reference on the module; we still need to
+ * disable preemption in order to safely traverse the data structure.
+ */
+ preempt_disable();
modaddr = __module_text_address(a);
BUG_ON(!modaddr);
module_put(modaddr);
+ preempt_enable();
}
EXPORT_SYMBOL_GPL(symbol_put_addr);
generated by cgit v0.10.2 at 2024-07-09 07:53:36 (GMT)