search for: out_pages

Hi, so here it is, LZ4 compression method inside btrfs. The patchset is based on top of current Chris'' for-linus + Andi''s snappy implementation + the fixes from Li Zefan. Passes xfstests and stresstests. I haven''t measured performance on wide range of hardware or workloads, rather wanted to publish the patches before I get distracted again. I''d like to ask

...vq->fud->fc; + struct fuse_args *args; + struct fuse_args_pages *ap; + unsigned int len, i, thislen; + struct page *page; + + /* + * TODO verify that server properly follows FUSE protocol + * (oh.uniq, oh.len) + */ + args = req->args; + copy_args_from_argbuf(args, req); + + if (args->out_pages && args->page_zeroing) { + len = args->out_args[args->out_numargs - 1].size; + ap = container_of(args, typeof(*ap), args); + for (i = 0; i < ap->num_pages; i++) { + thislen = ap->descs[i].length; + if (len < thislen) { + WARN_ON(ap->descs[i].offset); + p...

...vq->fud->fc; + struct fuse_args *args; + struct fuse_args_pages *ap; + unsigned int len, i, thislen; + struct page *page; + + /* + * TODO verify that server properly follows FUSE protocol + * (oh.uniq, oh.len) + */ + args = req->args; + copy_args_from_argbuf(args, req); + + if (args->out_pages && args->page_zeroing) { + len = args->out_args[args->out_numargs - 1].size; + ap = container_of(args, typeof(*ap), args); + for (i = 0; i < ap->num_pages; i++) { + thislen = ap->descs[i].length; + if (len < thislen) { + WARN_ON(ap->descs[i].offset); + p...

...+{ > + struct fuse_args *args = req->args; > + unsigned int offset = 0; > + unsigned int num_in; > + unsigned int num_out; > + unsigned int len; > + unsigned int i; > + > + num_in = args->in_numargs - args->in_pages; > + num_out = args->out_numargs - args->out_pages; > + len = fuse_len_args(num_in, (struct fuse_arg *) args->in_args) + > + fuse_len_args(num_out, args->out_args); > + > + req->argbuf = kmalloc(len, GFP_ATOMIC); > + if (!req->argbuf) > + return -ENOMEM; > + > + for (i = 0; i < num_in; i++) { > + me...

WARNING: This is not compatible with the previous lz4 patchset. If you''re using experimental compression that isn''t in mainline kernels, be prepared to backup and restore or decompress before upgrading, and have backups in case it eats data (which appears not to be a problem any more, but has been during development). These patches add lz4 and lz4hc compression

..._buf(chan->vq, outsg, insg, req->tc, GFP_ATOMIC); if (err < 0) { if (err == -ENOSPC) { chan->ring_bufs_avail = 0; @@ -356,6 +366,7 @@ p9_virtio_zc_request(struct p9_client *client, struct p9_req_t *req, int in_nr_pages = 0, out_nr_pages = 0; struct page **in_pages = NULL, **out_pages = NULL; struct virtio_chan *chan = client->trans; + struct scatterlist *insg = NULL, *outsg = NULL; p9_debug(P9_DEBUG_TRANS, "virtio request\n"); @@ -403,6 +414,13 @@ req_retry_pinned: if (out_pages) out += pack_sg_list_p(chan->sg, out, VIRTQUEUE_NUM, out_pag...

..._buf(chan->vq, outsg, insg, req->tc, GFP_ATOMIC); if (err < 0) { if (err == -ENOSPC) { chan->ring_bufs_avail = 0; @@ -356,6 +366,7 @@ p9_virtio_zc_request(struct p9_client *client, struct p9_req_t *req, int in_nr_pages = 0, out_nr_pages = 0; struct page **in_pages = NULL, **out_pages = NULL; struct virtio_chan *chan = client->trans; + struct scatterlist *insg = NULL, *outsg = NULL; p9_debug(P9_DEBUG_TRANS, "virtio request\n"); @@ -403,6 +414,13 @@ req_retry_pinned: if (out_pages) out += pack_sg_list_p(chan->sg, out, VIRTQUEUE_NUM, out_pag...

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:

From: John Hubbard <jhubbard at nvidia.com> Hi, This is mostly Jerome's work, converting the block/bio and related areas to call put_user_page*() instead of put_page(). Because I've changed Jerome's patches, in some cases significantly, I'd like to get his feedback before we actually leave him listed as the author (he might want to disown some or all of these). I added a

From: John Hubbard <jhubbard at nvidia.com> Hi, This is mostly Jerome's work, converting the block/bio and related areas to call put_user_page*() instead of put_page(). Because I've changed Jerome's patches, in some cases significantly, I'd like to get his feedback before we actually leave him listed as the author (he might want to disown some or all of these). I added a

Add virtqueue_add_sgs which is more general than virtqueue_add_buf, which makes virtio-scsi and virtio-blk nicer, then add virtqueue_add_inbuf and virtqueue_add_outbuf which handle the more general case, and finally delete virtqueue_add_buf(). I'm hoping this will be the final post of the whole series, and it can move from my pending-rebases tree into virtio-next. Thanks! Rusty. Paolo

Add virtqueue_add_sgs which is more general than virtqueue_add_buf, which makes virtio-scsi and virtio-blk nicer, then add virtqueue_add_inbuf and virtqueue_add_outbuf which handle the more general case, and finally delete virtqueue_add_buf(). I'm hoping this will be the final post of the whole series, and it can move from my pending-rebases tree into virtio-next. Thanks! Rusty. Paolo

Hi all, this series removes most users of the write_one_page API. These helpers internally call ->writepage which we are gradually removing from the kernel. Changes since v2: - more minix error handling fixes Changes since v1: - drop the btrfs changes (queue up in the btrfs tree) - drop the finaly move to jfs (can't be done without the btrfs patches) - fix the existing minix code to

Hi all - The following 9 patches add more error handling to the btrfs code: - Add btrfs_panic - Catch locking failures in {set,clear}_extent_bit - Push up set_extent_bit errors to callers - Push up lock_extent errors to callers - Push up clear_extent_bit errors to callers - Push up unlock_extent errors to callers - Make pin_down_extent return void - Push up btrfs_pin_extent errors to

Hi all - Here''s my current error handling patchset, against 3.1-rc8. Almost all of this patchset is preparing for actual error handling. Before we start in on that work, I''m trying to reduce the surface we need to worry about. It turns out that there is a ton of code that returns an error code but never actually reports an error. The patchset has grown to 65 patches. 46 of them