search for: kioctx

Hi folks, This patchset adds vhost-blk support. vhost-blk is a in kernel virito-blk device accelerator. Compared to userspace virtio-blk implementation, vhost-blk gives about 5% to 15% performance improvement. Asias He (5): aio: Export symbols and struct kiocb_batch for in kernel aio usage eventfd: Export symbol eventfd_file_create() vhost: Make vhost a separate module vhost-net: Use

Hi folks, This patchset adds vhost-blk support. vhost-blk is a in kernel virito-blk device accelerator. Compared to userspace virtio-blk implementation, vhost-blk gives about 5% to 15% performance improvement. Asias He (5): aio: Export symbols and struct kiocb_batch for in kernel aio usage eventfd: Export symbol eventfd_file_create() vhost: Make vhost a separate module vhost-net: Use

Hi folks, [I am resending to fix the broken thread in the previous one.] This patchset adds vhost-blk support. vhost-blk is a in kernel virito-blk device accelerator. Compared to userspace virtio-blk implementation, vhost-blk gives about 5% to 15% performance improvement. Asias He (5): aio: Export symbols and struct kiocb_batch for in kernel aio usage eventfd: Export symbol

Hi folks, [I am resending to fix the broken thread in the previous one.] This patchset adds vhost-blk support. vhost-blk is a in kernel virito-blk device accelerator. Compared to userspace virtio-blk implementation, vhost-blk gives about 5% to 15% performance improvement. Asias He (5): aio: Export symbols and struct kiocb_batch for in kernel aio usage eventfd: Export symbol

...ify_cache 1 169 20 169 1 dquot 0 0 128 30 1 eventpoll_pwq 1 101 36 101 1 eventpoll_epi 1 30 128 30 1 inotify_event_cache 0 0 28 127 1 inotify_watch_cache 40 92 40 92 1 kioctx 0 0 256 15 1 kiocb 0 0 128 30 1 fasync_cache 1 203 16 203 1 shmem_inode_cache 612 632 460 8 1 posix_timers_cache 0 0 100 39 1 uid_cache 7 59 64 59 1 blkde...

Currently, vhost-net is the only consumer of vhost infrastructure. So vhost infrastructure and vhost-net driver are in a single module. Separating this as a vhost.ko module and a vhost-net.ko module makes it is easier to share code with other vhost drivers, e.g. vhost-blk.ko, tcm-vhost.ko. Signed-off-by: Asias He <asias at redhat.com> --- drivers/vhost/Kconfig | 10 +++++++++-

Currently, vhost-net is the only consumer of vhost infrastructure. So vhost infrastructure and vhost-net driver are in a single module. Separating this as a vhost.ko module and a vhost-net.ko module makes it is easier to share code with other vhost drivers, e.g. vhost-blk.ko, tcm-vhost.ko. Signed-off-by: Asias He <asias at redhat.com> --- drivers/vhost/Kconfig | 10 +++++++++-

...gt; #include <linux/slab.h> #include <linux/timer.h> #include <linux/aio.h> @@ -34,7 +35,6 @@ #include <asm/kmap_types.h> #include <asm/uaccess.h> -#include <asm/mmu_context.h> #if DEBUG > 1 #define dprintk printk @@ -595,51 +595,6 @@ static struct kioctx *lookup_ioctx(unsigned long ctx_id) } /* - * use_mm - * Makes the calling kernel thread take on the specified - * mm context. - * Called by the retry thread execute retries within the - * iocb issuer's mm context, so that copy_from/to_user - * operations work seamlessly for aio. - * (Note:...

...gt; #include <linux/slab.h> #include <linux/timer.h> #include <linux/aio.h> @@ -34,7 +35,6 @@ #include <asm/kmap_types.h> #include <asm/uaccess.h> -#include <asm/mmu_context.h> #if DEBUG > 1 #define dprintk printk @@ -595,51 +595,6 @@ static struct kioctx *lookup_ioctx(unsigned long ctx_id) } /* - * use_mm - * Makes the calling kernel thread take on the specified - * mm context. - * Called by the retry thread execute retries within the - * iocb issuer's mm context, so that copy_from/to_user - * operations work seamlessly for aio. - * (Note:...

...gt; #include <linux/slab.h> #include <linux/timer.h> #include <linux/aio.h> @@ -34,7 +35,6 @@ #include <asm/kmap_types.h> #include <asm/uaccess.h> -#include <asm/mmu_context.h> #if DEBUG > 1 #define dprintk printk @@ -595,51 +595,6 @@ static struct kioctx *lookup_ioctx(unsigned long ctx_id) } /* - * use_mm - * Makes the calling kernel thread take on the specified - * mm context. - * Called by the retry thread execute retries within the - * iocb issuer's mm context, so that copy_from/to_user - * operations work seamlessly for aio. - * (Note:...

...gt; #include <linux/slab.h> #include <linux/timer.h> #include <linux/aio.h> @@ -34,7 +35,6 @@ #include <asm/kmap_types.h> #include <asm/uaccess.h> -#include <asm/mmu_context.h> #if DEBUG > 1 #define dprintk printk @@ -595,51 +595,6 @@ static struct kioctx *lookup_ioctx(unsigned long ctx_id) } /* - * use_mm - * Makes the calling kernel thread take on the specified - * mm context. - * Called by the retry thread execute retries within the - * iocb issuer's mm context, so that copy_from/to_user - * operations work seamlessly for aio. - * (Note:...

...gt; #include <linux/slab.h> #include <linux/timer.h> #include <linux/aio.h> @@ -34,7 +35,6 @@ #include <asm/kmap_types.h> #include <asm/uaccess.h> -#include <asm/mmu_context.h> #if DEBUG > 1 #define dprintk printk @@ -595,51 +595,6 @@ static struct kioctx *lookup_ioctx(unsigned long ctx_id) } /* - * use_mm - * Makes the calling kernel thread take on the specified - * mm context. - * Called by the retry thread execute retries within the - * iocb issuer's mm context, so that copy_from/to_user - * operations work seamlessly for aio. - * (Note:...

...gt; #include <linux/slab.h> #include <linux/timer.h> #include <linux/aio.h> @@ -34,7 +35,6 @@ #include <asm/kmap_types.h> #include <asm/uaccess.h> -#include <asm/mmu_context.h> #if DEBUG > 1 #define dprintk printk @@ -595,51 +595,6 @@ static struct kioctx *lookup_ioctx(unsigned long ctx_id) } /* - * use_mm - * Makes the calling kernel thread take on the specified - * mm context. - * Called by the retry thread execute retries within the - * iocb issuer's mm context, so that copy_from/to_user - * operations work seamlessly for aio. - * (Note:...

...gt; #include <linux/slab.h> #include <linux/timer.h> #include <linux/aio.h> @@ -34,7 +35,6 @@ #include <asm/kmap_types.h> #include <asm/uaccess.h> -#include <asm/mmu_context.h> #if DEBUG > 1 #define dprintk printk @@ -595,51 +595,6 @@ static struct kioctx *lookup_ioctx(unsigned long ctx_id) } /* - * use_mm - * Makes the calling kernel thread take on the specified - * mm context. - * Called by the retry thread execute retries within the - * iocb issuer's mm context, so that copy_from/to_user - * operations work seamlessly for aio. - * (Note:...

...gt; #include <linux/slab.h> #include <linux/timer.h> #include <linux/aio.h> @@ -34,7 +35,6 @@ #include <asm/kmap_types.h> #include <asm/uaccess.h> -#include <asm/mmu_context.h> #if DEBUG > 1 #define dprintk printk @@ -595,51 +595,6 @@ static struct kioctx *lookup_ioctx(unsigned long ctx_id) } /* - * use_mm - * Makes the calling kernel thread take on the specified - * mm context. - * Called by the retry thread execute retries within the - * iocb issuer's mm context, so that copy_from/to_user - * operations work seamlessly for aio. - * (Note:...

..._reads(iocb); + retval = direct_io_worker(rw, iocb, inode, iov, offset, nr_segs, blkbits, get_block, end_io, submit_io, dio); diff --git a/include/linux/aio.h b/include/linux/aio.h index 7a8db41..9ee9c6e 100644 --- a/include/linux/aio.h +++ b/include/linux/aio.h @@ -34,6 +34,8 @@ struct kioctx; /* #define KIF_LOCKED 0 */ #define KIF_KICKED 1 #define KIF_CANCELLED 2 +/* to separate meta reads */ +#define KIF_SEPARATE_META 3 #define kiocbTryLock(iocb) test_and_set_bit(KIF_LOCKED, &(iocb)->ki_flags) #define kiocbTryKick(iocb) test_and_set_bit(KIF_KICKED, &(iocb)->ki_...

...gt; #include <linux/slab.h> #include <linux/timer.h> #include <linux/aio.h> @@ -34,7 +35,6 @@ #include <asm/kmap_types.h> #include <asm/uaccess.h> -#include <asm/mmu_context.h> #if DEBUG > 1 #define dprintk printk @@ -595,51 +595,6 @@ static struct kioctx *lookup_ioctx(unsigned long ctx_id) } /* - * use_mm - * Makes the calling kernel thread take on the specified - * mm context. - * Called by the retry thread execute retries within the - * iocb issuer's mm context, so that copy_from/to_user - * operations work seamlessly for aio. - * (Note:...

...gt; #include <linux/slab.h> #include <linux/timer.h> #include <linux/aio.h> @@ -34,7 +35,6 @@ #include <asm/kmap_types.h> #include <asm/uaccess.h> -#include <asm/mmu_context.h> #if DEBUG > 1 #define dprintk printk @@ -595,51 +595,6 @@ static struct kioctx *lookup_ioctx(unsigned long ctx_id) } /* - * use_mm - * Makes the calling kernel thread take on the specified - * mm context. - * Called by the retry thread execute retries within the - * iocb issuer's mm context, so that copy_from/to_user - * operations work seamlessly for aio. - * (Note:...

...0 20 185 1 : tunables 120 60 8 : slabdata 0 0 0 eventpoll_pwq 0 0 36 107 1 : tunables 120 60 8 : slabdata 0 0 0 eventpoll_epi 0 0 128 31 1 : tunables 120 60 8 : slabdata 0 0 0 kioctx 0 0 256 15 1 : tunables 120 60 8 : slabdata 0 0 0 kiocb 0 0 128 31 1 : tunables 120 60 8 : slabdata 0 0 0 fasync_cache 0 0 16 226 1 : tunables 120 60 8 : slabdata...

...e 156 156 152 26 ext4_io_end 336 336 72 56 ext4_extent_status 7361 7446 40 102 ext3_inode_cache 0 0 1312 24 ext3_xattr 3726 3956 88 46 dquot 0 0 384 21 kioctx 0 0 896 18 pid_namespace 0 0 2208 14 posix_timers_cache 108 108 296 27 UNIX 198 198 1472 22 Cache Num Total Size Pages UDP-Lite 0 0...