search for: 1725,13

...its in the log, but won't if it sets bits in the log. E.g. reusing the log structure for vhost-user will have exactly this effect. > return 0; > +err: > + mutex_unlock(&vhost_log_lock); > + return r; > } > > static int log_write(void __user *log_base, > @@ -1725,13 +1731,13 @@ static int log_write(void __user *log_base, > if (!write_length) > return 0; > write_length += write_address % VHOST_PAGE_SIZE; > + log_base = (void __user *)((u64)log_base & ~0x3ULL); > + write_page += ((u64)log_base & 0x3ULL) * 8; > for (;;) { &gt...

...vhost_log_lock); + r = get_user(old, addr); + if (r) + goto err; + r = put_user(old | 1 << nr, addr); + if (r) + goto err; + mutex_unlock(&vhost_log_lock); + } return 0; +err: + mutex_unlock(&vhost_log_lock); + return r; } static int log_write(void __user *log_base, @@ -1725,13 +1731,13 @@ static int log_write(void __user *log_base, if (!write_length) return 0; write_length += write_address % VHOST_PAGE_SIZE; + log_base = (void __user *)((u64)log_base & ~0x3ULL); + write_page += ((u64)log_base & 0x3ULL) * 8; for (;;) { - u64 base = (u64)(unsigned long...

...vhost_log_lock); + r = get_user(old, addr); + if (r) + goto err; + r = put_user(old | 1 << nr, addr); + if (r) + goto err; + mutex_unlock(&vhost_log_lock); + } return 0; +err: + mutex_unlock(&vhost_log_lock); + return r; } static int log_write(void __user *log_base, @@ -1725,13 +1731,13 @@ static int log_write(void __user *log_base, if (!write_length) return 0; write_length += write_address % VHOST_PAGE_SIZE; + log_base = (void __user *)((u64)log_base & ~0x3ULL); + write_page += ((u64)log_base & 0x3ULL) * 8; for (;;) { - u64 base = (u64)(unsigned long...

...} + skb_orphan(skb); br_flood_deliver(br, skb, 0); return 0; } For 2.6.17.3: signed-off-by: Bernd Kischnick <kisch@gmx.li> diff -urN a/CREDITS b/CREDITS --- a/CREDITS 2006-06-30 19:37:38.000000000 +0200 +++ b/CREDITS 2006-07-04 16:46:09.000000000 +0200 @@ -1725,6 +1725,13 @@ S: D-64295 S: Germany +N: Bernd Kischnick +E: kisch@gmx.li +D: the odd kernel fix +S: Alemannstr 11 +S: 30165 Hannover +S: Germany + N: Andi Kleen E: ak@muc.de D: network hacker, syncookies diff -urN a/net/bridge/br_device.c b/net/bridge/br_device.c --- a/net/bridge/br_device.c...

...vq->used_ring.addr)) > + vhost_setup_used_vmap(vq, (unsigned long)vq->used); > + > return 1; > + } > > return iotlb_access_ok(vq, VHOST_ACCESS_RO, (u64)(uintptr_t)vq->desc, > vhost_get_desc_size(vq, num), VHOST_ADDR_DESC) && > @@ -1478,6 +1725,13 @@ long vhost_vring_ioctl(struct vhost_dev *d, unsigned int ioctl, void __user *arg > > mutex_lock(&vq->mutex); > > + /* Unregister MMU notifer to allow invalidation callback > + * can access vq->avail, vq->desc , vq->used and vq->num > + * without ho...

...ned long)vq->desc); + if (unlikely(!vq->used_ring.addr)) + vhost_setup_used_vmap(vq, (unsigned long)vq->used); + return 1; + } return iotlb_access_ok(vq, VHOST_ACCESS_RO, (u64)(uintptr_t)vq->desc, vhost_get_desc_size(vq, num), VHOST_ADDR_DESC) && @@ -1478,6 +1725,13 @@ long vhost_vring_ioctl(struct vhost_dev *d, unsigned int ioctl, void __user *arg mutex_lock(&vq->mutex); + /* Unregister MMU notifer to allow invalidation callback + * can access vq->avail, vq->desc , vq->used and vq->num + * without holding vq->mutex. + */ + if...

This series tries to access virtqueue metadata through kernel virtual address instead of copy_user() friends since they had too much overheads like checks, spec barriers or even hardware feature toggling. Test shows about 24% improvement on TX PPS. It should benefit other cases as well. Changes from V2: - fix buggy range overlapping check - tear down MMU notifier during vhost ioctl to make sure

This series tries to access virtqueue metadata through kernel virtual address instead of copy_user() friends since they had too much overheads like checks, spec barriers or even hardware feature toggling. Test shows about 24% improvement on TX PPS. It should benefit other cases as well. Changes from V2: - fix buggy range overlapping check - tear down MMU notifier during vhost ioctl to make sure

..."; - Link "aio_pwrite"; Link "get_block_size"]; + Link "aio_pwrite"; Link "get_block_size"; + Link "set_strict_mode"]; example = Some "examples/reads-and-writes.c"; }; @@ -1657,11 +1725,13 @@ A future version of the library may add new flags."; Issue the flush command to the NBD server. The function should return when all write commands which have completed have been committed to permanent storage on the server. Note this will -return an error if L<nbd_can_flush(3)&gt...

In v2: - now based on my proposal to add LIBNBD_SHUTDOWN_IMMEDIATE - four flags instead of two: STRICT_FLAGS is new (patch 4), and STRICT_BOUNDS is separate from STRICT_ZERO_SIZE (patch 5) - various refactorings for more shared code and less duplication Eric Blake (5): api: Add xxx_MASK constant for each Flags type generator: Refactor filtering of accepted OFlags api: Add