Displaying 5 results from an estimated 5 matches for "read_sync".
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head_sync
2011 May 03
8
Is it possible for the ext4/btrfs file system to pass some context related info to low level block driver?
Currently, some new storage devices have the ability to do performance optimizations according to the type of data payload - say, file system metadata, time-stamps, sequential write in some granularity, random write and so on.
For example, the latest eMMC 4.5 device can support the so-called ''Context Management'' and ''Data Tag Mechanism'' features. By receiving
2005 Aug 30
4
Re: [Xen-changelog] New console transport and update xenconsoled.
...1) {
> close(dom->tty_fd);
>+ dom->tty_fd = -1;
>
> if (domain_is_valid(dom->domid)) {
> dom->tty_fd = domain_create_tty(dom);
>@@ -270,6 +395,18 @@
> }
> }
>
>+static void handle_ring_read(struct domain *dom)
>+{
>+ u16 v;
>+
>+ if (!read_sync(dom->evtchn_fd, &v, sizeof(v)))
>+ return;
>+
>+ buffer_append(dom);
>+
>+ (void)write_sync(dom->evtchn_fd, &v, sizeof(v));
>+}
>+
> static void handle_xcs_msg(int fd)
> {
> xcs_msg_t msg;
>@@ -277,13 +414,6 @@
> if (!read_sync(fd, &msg, size...
2013 Nov 27
0
[PATCH 07/25] block: Convert bio_for_each_segment() to bvec_iter
...v *dc, struct bio *bio)
{
char name[BDEVNAME_SIZE];
struct bio *check;
- struct bio_vec *bv;
+ struct bio_vec bv, *bv2;
+ struct bvec_iter iter;
int i;
check = bio_clone(bio, GFP_NOIO);
@@ -185,13 +186,13 @@ void bch_data_verify(struct cached_dev *dc, struct bio *bio)
submit_bio_wait(READ_SYNC, check);
- bio_for_each_segment(bv, bio, i) {
- void *p1 = kmap_atomic(bv->bv_page);
- void *p2 = page_address(check->bi_io_vec[i].bv_page);
+ bio_for_each_segment(bv, bio, iter) {
+ void *p1 = kmap_atomic(bv.bv_page);
+ void *p2 = page_address(check->bi_io_vec[iter.bi_idx].bv_page);...
2013 Nov 27
0
[PATCH 07/25] block: Convert bio_for_each_segment() to bvec_iter
...v *dc, struct bio *bio)
{
char name[BDEVNAME_SIZE];
struct bio *check;
- struct bio_vec *bv;
+ struct bio_vec bv, *bv2;
+ struct bvec_iter iter;
int i;
check = bio_clone(bio, GFP_NOIO);
@@ -185,13 +186,13 @@ void bch_data_verify(struct cached_dev *dc, struct bio *bio)
submit_bio_wait(READ_SYNC, check);
- bio_for_each_segment(bv, bio, i) {
- void *p1 = kmap_atomic(bv->bv_page);
- void *p2 = page_address(check->bi_io_vec[i].bv_page);
+ bio_for_each_segment(bv, bio, iter) {
+ void *p1 = kmap_atomic(bv.bv_page);
+ void *p2 = page_address(check->bi_io_vec[iter.bi_idx].bv_page);...
2013 Nov 27
0
[PATCH 07/25] block: Convert bio_for_each_segment() to bvec_iter
...v *dc, struct bio *bio)
{
char name[BDEVNAME_SIZE];
struct bio *check;
- struct bio_vec *bv;
+ struct bio_vec bv, *bv2;
+ struct bvec_iter iter;
int i;
check = bio_clone(bio, GFP_NOIO);
@@ -185,13 +186,13 @@ void bch_data_verify(struct cached_dev *dc, struct bio *bio)
submit_bio_wait(READ_SYNC, check);
- bio_for_each_segment(bv, bio, i) {
- void *p1 = kmap_atomic(bv->bv_page);
- void *p2 = page_address(check->bi_io_vec[i].bv_page);
+ bio_for_each_segment(bv, bio, iter) {
+ void *p1 = kmap_atomic(bv.bv_page);
+ void *p2 = page_address(check->bi_io_vec[iter.bi_idx].bv_page);...