From: "Dr. David Alan Gilbert (git)" <dgilbert@redhat.com>
To: qemu-devel@nongnu.org, vgoyal@redhat.com, stefanha@redhat.com,
groug@kaod.org
Cc: virtio-fs@redhat.com
Subject: [PATCH v3 22/26] DAX/unmap virtiofsd: route unmappable write to slave command
Date: Wed, 28 Apr 2021 12:00:56 +0100 [thread overview]
Message-ID: <20210428110100.27757-23-dgilbert@redhat.com> (raw)
In-Reply-To: <20210428110100.27757-1-dgilbert@redhat.com>
From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
When a fuse_buf_copy is performed on an element with FUSE_BUF_PHYS_ADDR
route it to a fuse_virtio_write request that does a slave command to
perform the write.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
---
tools/virtiofsd/buffer.c | 14 +++++++++++---
tools/virtiofsd/fuse_common.h | 6 +++++-
tools/virtiofsd/fuse_lowlevel.h | 3 ---
tools/virtiofsd/passthrough_ll.c | 2 +-
4 files changed, 17 insertions(+), 8 deletions(-)
diff --git a/tools/virtiofsd/buffer.c b/tools/virtiofsd/buffer.c
index 1a050aa441..8135d52d2a 100644
--- a/tools/virtiofsd/buffer.c
+++ b/tools/virtiofsd/buffer.c
@@ -200,13 +200,20 @@ static ssize_t fuse_buf_fd_to_fd(const struct fuse_buf *dst, size_t dst_off,
return copied;
}
-static ssize_t fuse_buf_copy_one(const struct fuse_buf *dst, size_t dst_off,
+static ssize_t fuse_buf_copy_one(fuse_req_t req,
+ const struct fuse_buf *dst, size_t dst_off,
const struct fuse_buf *src, size_t src_off,
size_t len)
{
int src_is_fd = src->flags & FUSE_BUF_IS_FD;
int dst_is_fd = dst->flags & FUSE_BUF_IS_FD;
+ int src_is_phys = src->flags & FUSE_BUF_PHYS_ADDR;
+ int dst_is_phys = src->flags & FUSE_BUF_PHYS_ADDR;
+ if (src_is_phys && !src_is_fd && dst_is_fd) {
+ return fuse_virtio_write(req, dst, dst_off, src, src_off, len);
+ }
+ assert(!src_is_phys && !dst_is_phys);
if (!src_is_fd && !dst_is_fd) {
char *dstmem = (char *)dst->mem + dst_off;
char *srcmem = (char *)src->mem + src_off;
@@ -259,7 +266,8 @@ static int fuse_bufvec_advance(struct fuse_bufvec *bufv, size_t len)
return 1;
}
-ssize_t fuse_buf_copy(struct fuse_bufvec *dstv, struct fuse_bufvec *srcv)
+ssize_t fuse_buf_copy(fuse_req_t req, struct fuse_bufvec *dstv,
+ struct fuse_bufvec *srcv)
{
size_t copied = 0, i;
@@ -301,7 +309,7 @@ ssize_t fuse_buf_copy(struct fuse_bufvec *dstv, struct fuse_bufvec *srcv)
dst_len = dst->size - dstv->off;
len = min_size(src_len, dst_len);
- res = fuse_buf_copy_one(dst, dstv->off, src, srcv->off, len);
+ res = fuse_buf_copy_one(req, dst, dstv->off, src, srcv->off, len);
if (res < 0) {
if (!copied) {
return res;
diff --git a/tools/virtiofsd/fuse_common.h b/tools/virtiofsd/fuse_common.h
index af43cf19f9..beed03aa93 100644
--- a/tools/virtiofsd/fuse_common.h
+++ b/tools/virtiofsd/fuse_common.h
@@ -510,6 +510,8 @@ struct fuse_conn_info {
struct fuse_session;
struct fuse_pollhandle;
struct fuse_conn_info_opts;
+struct fuse_req;
+typedef struct fuse_req *fuse_req_t;
/**
* This function parses several command-line options that can be used
@@ -728,11 +730,13 @@ size_t fuse_buf_size(const struct fuse_bufvec *bufv);
/**
* Copy data from one buffer vector to another
*
+ * @param req The request this copy is part of
* @param dst destination buffer vector
* @param src source buffer vector
* @return actual number of bytes copied or -errno on error
*/
-ssize_t fuse_buf_copy(struct fuse_bufvec *dst, struct fuse_bufvec *src);
+ssize_t fuse_buf_copy(fuse_req_t req,
+ struct fuse_bufvec *dst, struct fuse_bufvec *src);
/**
* Memory buffer iterator
diff --git a/tools/virtiofsd/fuse_lowlevel.h b/tools/virtiofsd/fuse_lowlevel.h
index 757cdae49b..24e580aafe 100644
--- a/tools/virtiofsd/fuse_lowlevel.h
+++ b/tools/virtiofsd/fuse_lowlevel.h
@@ -42,9 +42,6 @@
/** Inode number type */
typedef uint64_t fuse_ino_t;
-/** Request pointer type */
-typedef struct fuse_req *fuse_req_t;
-
/**
* Session
*
diff --git a/tools/virtiofsd/passthrough_ll.c b/tools/virtiofsd/passthrough_ll.c
index 600e102839..c5b8a1f5b1 100644
--- a/tools/virtiofsd/passthrough_ll.c
+++ b/tools/virtiofsd/passthrough_ll.c
@@ -2301,7 +2301,7 @@ static void lo_write_buf(fuse_req_t req, fuse_ino_t ino,
}
}
- res = fuse_buf_copy(&out_buf, in_buf);
+ res = fuse_buf_copy(req, &out_buf, in_buf);
if (res < 0) {
fuse_reply_err(req, -res);
} else {
--
2.31.1
next prev parent reply other threads:[~2021-04-28 11:19 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-28 11:00 [PATCH v3 00/26] virtiofs dax patches Dr. David Alan Gilbert (git)
2021-04-28 11:00 ` [PATCH v3 01/26] virtiofs: Fixup printf args Dr. David Alan Gilbert (git)
2021-05-04 14:54 ` Stefan Hajnoczi
2021-05-05 11:06 ` Dr. David Alan Gilbert
2021-05-06 15:56 ` Dr. David Alan Gilbert
2021-04-28 11:00 ` [PATCH v3 02/26] virtiofsd: Don't assume header layout Dr. David Alan Gilbert (git)
2021-05-04 15:12 ` Stefan Hajnoczi
2021-05-06 15:56 ` Dr. David Alan Gilbert
2021-04-28 11:00 ` [PATCH v3 03/26] DAX: vhost-user: Rework slave return values Dr. David Alan Gilbert (git)
2021-05-04 15:23 ` Stefan Hajnoczi
2021-05-27 15:59 ` Dr. David Alan Gilbert
2021-04-28 11:00 ` [PATCH v3 04/26] DAX: libvhost-user: Route slave message payload Dr. David Alan Gilbert (git)
2021-05-04 15:26 ` Stefan Hajnoczi
2021-04-28 11:00 ` [PATCH v3 05/26] DAX: libvhost-user: Allow popping a queue element with bad pointers Dr. David Alan Gilbert (git)
2021-04-28 11:00 ` [PATCH v3 06/26] DAX subprojects/libvhost-user: Add virtio-fs slave types Dr. David Alan Gilbert (git)
2021-04-29 15:48 ` Dr. David Alan Gilbert
2021-04-28 11:00 ` [PATCH v3 07/26] DAX: virtio: Add shared memory capability Dr. David Alan Gilbert (git)
2021-04-28 11:00 ` [PATCH v3 08/26] DAX: virtio-fs: Add cache BAR Dr. David Alan Gilbert (git)
2021-05-05 12:12 ` Stefan Hajnoczi
2021-05-05 18:59 ` Dr. David Alan Gilbert
2021-04-28 11:00 ` [PATCH v3 09/26] DAX: virtio-fs: Add vhost-user slave commands for mapping Dr. David Alan Gilbert (git)
2021-05-05 14:15 ` Stefan Hajnoczi
2021-05-27 16:57 ` Dr. David Alan Gilbert
2021-04-28 11:00 ` [PATCH v3 10/26] DAX: virtio-fs: Fill in " Dr. David Alan Gilbert (git)
2021-05-05 16:43 ` Stefan Hajnoczi
2021-04-28 11:00 ` [PATCH v3 11/26] DAX: virtiofsd Add cache accessor functions Dr. David Alan Gilbert (git)
2021-04-28 11:00 ` [PATCH v3 12/26] DAX: virtiofsd: Add setup/remove mappings fuse commands Dr. David Alan Gilbert (git)
2021-05-06 15:02 ` Stefan Hajnoczi
2021-04-28 11:00 ` [PATCH v3 13/26] DAX: virtiofsd: Add setup/remove mapping handlers to passthrough_ll Dr. David Alan Gilbert (git)
2021-04-28 11:00 ` [PATCH v3 14/26] DAX: virtiofsd: Wire up passthrough_ll's lo_setupmapping Dr. David Alan Gilbert (git)
2021-04-28 11:00 ` [PATCH v3 15/26] DAX: virtiofsd: Make lo_removemapping() work Dr. David Alan Gilbert (git)
2021-04-28 11:00 ` [PATCH v3 16/26] DAX: virtiofsd: route se down to destroy method Dr. David Alan Gilbert (git)
2021-04-28 11:00 ` [PATCH v3 17/26] DAX: virtiofsd: Perform an unmap on destroy Dr. David Alan Gilbert (git)
2021-04-28 11:00 ` [PATCH v3 18/26] DAX/unmap: virtiofsd: Add VHOST_USER_SLAVE_FS_IO Dr. David Alan Gilbert (git)
2021-05-06 15:12 ` Stefan Hajnoczi
2021-05-27 17:44 ` Dr. David Alan Gilbert
2021-05-06 15:16 ` Stefan Hajnoczi
2021-05-27 17:31 ` Dr. David Alan Gilbert
2021-04-28 11:00 ` [PATCH v3 19/26] DAX/unmap virtiofsd: Add wrappers for VHOST_USER_SLAVE_FS_IO Dr. David Alan Gilbert (git)
2021-04-28 12:53 ` Dr. David Alan Gilbert
2021-04-28 11:00 ` [PATCH v3 20/26] DAX/unmap virtiofsd: Parse unmappable elements Dr. David Alan Gilbert (git)
2021-05-06 15:23 ` Stefan Hajnoczi
2021-05-27 17:56 ` Dr. David Alan Gilbert
2021-04-28 11:00 ` [PATCH v3 21/26] DAX/unmap virtiofsd: Route unmappable reads Dr. David Alan Gilbert (git)
2021-05-06 15:27 ` Stefan Hajnoczi
2021-04-28 11:00 ` Dr. David Alan Gilbert (git) [this message]
2021-05-06 15:28 ` [PATCH v3 22/26] DAX/unmap virtiofsd: route unmappable write to slave command Stefan Hajnoczi
2021-04-28 11:00 ` [PATCH v3 23/26] DAX:virtiofsd: implement FUSE_INIT map_alignment field Dr. David Alan Gilbert (git)
2021-04-28 11:00 ` [PATCH v3 24/26] vhost-user-fs: Extend VhostUserFSSlaveMsg to pass additional info Dr. David Alan Gilbert (git)
2021-05-06 15:31 ` Stefan Hajnoczi
2021-05-06 15:32 ` Stefan Hajnoczi
2021-04-28 11:00 ` [PATCH v3 25/26] vhost-user-fs: Implement drop CAP_FSETID functionality Dr. David Alan Gilbert (git)
2021-04-28 11:01 ` [PATCH v3 26/26] virtiofsd: Ask qemu to drop CAP_FSETID if client asked for it Dr. David Alan Gilbert (git)
2021-05-06 15:37 ` Stefan Hajnoczi
2021-05-06 16:02 ` Vivek Goyal
2021-05-10 9:05 ` Stefan Hajnoczi
2021-05-10 15:23 ` Vivek Goyal
2021-05-10 15:32 ` Stefan Hajnoczi
2021-05-27 19:09 ` Dr. David Alan Gilbert
2021-06-10 15:29 ` Dr. David Alan Gilbert
2021-06-10 16:23 ` Stefan Hajnoczi
2021-06-16 12:36 ` Dr. David Alan Gilbert
2021-06-16 15:29 ` Stefan Hajnoczi
2021-06-16 18:35 ` Dr. David Alan Gilbert
2021-04-28 11:27 ` [PATCH v3 00/26] virtiofs dax patches no-reply
2021-05-06 15:37 ` Stefan Hajnoczi
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