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I''ve actually found a way to make EventMachine listen to events from a serial port, but only by using the pure Ruby version, using Guilliame Pierronnet''s Ruby/SerialPort library. It turned out to be simpler than I thought it would be: require ''serialport'' $eventmachine_library = :pure_ruby require ''eventmachine'' module EventMachine class

How can I manipulate RoR to produce an .xhtml file from the view template(s)? I see how I can use layouts and paritals to efficiently produce the content and tags that I need, but how can I get the actual file that''s produced to be named with the .xhtml suffix, (rather than *.htm, as it currently is)? [Note: I never thought the suffix was all that important, but evidenly Mozilla

...r config space updates */ struct work_struct config_work; + /* + * Tracks references from block_device_operations open/release and + * virtio_driver probe/remove so this object can be freed once no + * longer in use. + */ + refcount_t refs; + /* What host tells us, plus 2 for header & tailer. */ unsigned int sg_elems; @@ -295,10 +311,55 @@ static int virtblk_get_id(struct gendisk *disk, char *id_str) return err; } +static void virtblk_get(struct virtio_blk *vblk) +{ + refcount_inc(&vblk->refs); +} + +static void virtblk_put(struct virtio_blk *vblk) +{ + if (refcount_dec...

...r config space updates */ struct work_struct config_work; + /* + * Tracks references from block_device_operations open/release and + * virtio_driver probe/remove so this object can be freed once no + * longer in use. + */ + refcount_t refs; + /* What host tells us, plus 2 for header & tailer. */ unsigned int sg_elems; @@ -295,10 +311,55 @@ static int virtblk_get_id(struct gendisk *disk, char *id_str) return err; } +static void virtblk_get(struct virtio_blk *vblk) +{ + refcount_inc(&vblk->refs); +} + +static void virtblk_put(struct virtio_blk *vblk) +{ + if (refcount_dec...

...@@ -36,6 +37,12 @@ struct virtio_blk /* Process context for config space updates */ struct work_struct config_work; + /* Lock for config space updates */ + struct mutex config_lock; + + /* enable config space updates */ + bool config_enable; + /* What host tells us, plus 2 for header & tailer. */ unsigned int sg_elems; @@ -318,6 +325,10 @@ static void virtblk_config_changed_work(struct work_struct *work) char cap_str_2[10], cap_str_10[10]; u64 capacity, size; + mutex_lock(&vblk->config_lock); + if (!vblk->config_enable) + goto done; + /* Host must always specify t...

...@@ -36,6 +37,12 @@ struct virtio_blk /* Process context for config space updates */ struct work_struct config_work; + /* Lock for config space updates */ + struct mutex config_lock; + + /* enable config space updates */ + bool config_enable; + /* What host tells us, plus 2 for header & tailer. */ unsigned int sg_elems; @@ -318,6 +325,10 @@ static void virtblk_config_changed_work(struct work_struct *work) char cap_str_2[10], cap_str_10[10]; u64 capacity, size; + mutex_lock(&vblk->config_lock); + if (!vblk->config_enable) + goto done; + /* Host must always specify t...

...r config space updates */ struct work_struct config_work; + /* + * Tracks references from block_device_operations open/release and + * virtio_driver probe/remove so this object can be freed once no + * longer in use. + */ + refcount_t refs; + /* What host tells us, plus 2 for header & tailer. */ unsigned int sg_elems; @@ -53,6 +60,9 @@ struct virtio_blk { /* num of vqs */ int num_vqs; struct virtio_blk_vq *vqs; + + /* Provides mutual exclusion with virtblk_remove(). */ + struct mutex remove_mutex; }; struct virtblk_req { @@ -295,10 +305,54 @@ static int virtblk_get_id(str...

...r config space updates */ struct work_struct config_work; + /* + * Tracks references from block_device_operations open/release and + * virtio_driver probe/remove so this object can be freed once no + * longer in use. + */ + refcount_t refs; + /* What host tells us, plus 2 for header & tailer. */ unsigned int sg_elems; @@ -53,6 +60,9 @@ struct virtio_blk { /* num of vqs */ int num_vqs; struct virtio_blk_vq *vqs; + + /* Provides mutual exclusion with virtblk_remove(). */ + struct mutex remove_mutex; }; struct virtblk_req { @@ -295,10 +305,54 @@ static int virtblk_get_id(str...

...8140..c8cf6a1 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -44,9 +44,6 @@ struct virtio_blk /* Lock for config space updates */ struct mutex config_lock; - /* enable config space updates */ - bool config_enable; - /* What host tells us, plus 2 for header & tailer. */ unsigned int sg_elems; @@ -348,8 +345,6 @@ static void virtblk_config_changed_work(struct work_struct *work) u64 capacity, size; mutex_lock(&vblk->config_lock); - if (!vblk->config_enable) - goto done; /* Host must always specify the capacity. */ virtio_cread(vdev, st...

...a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -41,9 +41,6 @@ struct virtio_blk /* Process context for config space updates */ struct work_struct config_work; - /* Lock for config space updates */ - struct mutex config_lock; - /* What host tells us, plus 2 for header & tailer. */ unsigned int sg_elems; @@ -344,8 +341,6 @@ static void virtblk_config_changed_work(struct work_struct *work) char *envp[] = { "RESIZE=1", NULL }; u64 capacity, size; - mutex_lock(&vblk->config_lock); - /* Host must always specify the capacity. */ virtio_cread(vdev...

...140..91272f1a 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -44,9 +44,6 @@ struct virtio_blk /* Lock for config space updates */ struct mutex config_lock; - /* enable config space updates */ - bool config_enable; - /* What host tells us, plus 2 for header & tailer. */ unsigned int sg_elems; @@ -348,8 +345,6 @@ static void virtblk_config_changed_work(struct work_struct *work) u64 capacity, size; mutex_lock(&vblk->config_lock); - if (!vblk->config_enable) - goto done; /* Host must always specify the capacity. */ virtio_cread(vdev, st...

...; > + * Tracks references from block_device_operations open/release and > > + * virtio_driver probe/remove so this object can be freed once no > > + * longer in use. > > + */ > > + refcount_t refs; > > + > > /* What host tells us, plus 2 for header & tailer. */ > > unsigned int sg_elems; > > > > @@ -53,6 +60,9 @@ struct virtio_blk { > > /* num of vqs */ > > int num_vqs; > > struct virtio_blk_vq *vqs; > > + > > + /* Provides mutual exclusion with virtblk_remove(). */ > > This is not the b...

...uot; resellers for small UPSs, as we didn't list these. So there are only online resellers referenced. Depending on the kind of UPS you're looking for, and the quantity/services, you can search for MGE partners and resellers here: http://www.mgeups.com/us/wtb/wtb.htm For small UPSs, the e-tailers list is: http://www.mgeups.com/selector/wtb/etailer.php3?country=us&l=us I would advice for PC Mall: http://www.pcmall.com/pcmall/search/product_list.asp?id=5000&alpha=M&WTReferer=http://www.pcmall.com/pcmall/shop/cat/Hardware/PowerProtection/category.asp&wt.mc_id=10509 For Mike,...

OK, this is (ab)uses some of Paolo's patches. The first 7 are candidates for this merge window (maybe), the rest I'm not so sure about. Thanks, Rusty. Paolo Bonzini (3): scatterlist: introduce sg_unmark_end virtio-blk: reorganize virtblk_add_req virtio-blk: use virtqueue_add_sgs on req path Rusty Russell (13): virtio_ring: virtqueue_add_sgs, to add multiple sgs. virtio-blk:

OK, this is (ab)uses some of Paolo's patches. The first 7 are candidates for this merge window (maybe), the rest I'm not so sure about. Thanks, Rusty. Paolo Bonzini (3): scatterlist: introduce sg_unmark_end virtio-blk: reorganize virtblk_add_req virtio-blk: use virtqueue_add_sgs on req path Rusty Russell (13): virtio_ring: virtqueue_add_sgs, to add multiple sgs. virtio-blk:

...s references from block_device_operations open/release and > + * virtio_driver probe/remove so this object can be freed once no > + * longer in use. > + */ > + refcount_t refs; Using a struct kref might be more idiomatic. > + > /* What host tells us, plus 2 for header & tailer. */ > unsigned int sg_elems; > > @@ -295,10 +311,55 @@ static int virtblk_get_id(struct gendisk *disk, char *id_str) > return err; > } > > +static void virtblk_get(struct virtio_blk *vblk) > +{ > + refcount_inc(&vblk->refs); Should the code even be able t...

...r config space updates */ struct work_struct config_work; + /* + * Tracks references from block_device_operations open/release and + * virtio_driver probe/remove so this object can be freed once no + * longer in use. + */ + refcount_t refs; + /* What host tells us, plus 2 for header & tailer. */ unsigned int sg_elems; @@ -295,10 +312,55 @@ static int virtblk_get_id(struct gendisk *disk, char *id_str) return err; } +static void virtblk_get(struct virtio_blk *vblk) +{ + refcount_inc(&vblk->refs); +} + +static void virtblk_put(struct virtio_blk *vblk) +{ + if (refcount_dec...

...r config space updates */ struct work_struct config_work; + /* + * Tracks references from block_device_operations open/release and + * virtio_driver probe/remove so this object can be freed once no + * longer in use. + */ + refcount_t refs; + /* What host tells us, plus 2 for header & tailer. */ unsigned int sg_elems; @@ -295,10 +312,55 @@ static int virtblk_get_id(struct gendisk *disk, char *id_str) return err; } +static void virtblk_get(struct virtio_blk *vblk) +{ + refcount_inc(&vblk->refs); +} + +static void virtblk_put(struct virtio_blk *vblk) +{ + if (refcount_dec...

...csi/scsi_cmnd.h> +#include <linux/idr.h> #define PART_BITS 4 -static int major, index; +static int major; +static DEFINE_IDA(vd_index_ida); + struct workqueue_struct *virtblk_wq; struct virtio_blk @@ -35,6 +38,9 @@ struct virtio_blk /* What host tells us, plus 2 for header & tailer. */ unsigned int sg_elems; + /* Ida index - used to track minor number allocations. */ + int index; + /* Scatterlist: can be too big for stack. */ struct scatterlist sg[/*sg_elems*/]; }; @@ -276,6 +282,11 @@ static int index_to_minor(int index) return index << PART_BITS; } +stat...

...csi/scsi_cmnd.h> +#include <linux/idr.h> #define PART_BITS 4 -static int major, index; +static int major; +static DEFINE_IDA(vd_index_ida); + struct workqueue_struct *virtblk_wq; struct virtio_blk @@ -35,6 +38,9 @@ struct virtio_blk /* What host tells us, plus 2 for header & tailer. */ unsigned int sg_elems; + /* Ida index - used to track minor number allocations. */ + int index; + /* Scatterlist: can be too big for stack. */ struct scatterlist sg[/*sg_elems*/]; }; @@ -276,6 +282,11 @@ static int index_to_minor(int index) return index << PART_BITS; } +stat...