[PATCH] fuse: introduce list for requests under I/O
Create a new list for requests in the process of being transfered to/from
userspace. This will be needed to be able to abort all requests even those
currently under I/O
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index bc8a384..609875d 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -181,6 +181,7 @@
*/
static void request_end(struct fuse_conn *fc, struct fuse_req *req)
{
+ list_del(&req->list);
req->state = FUSE_REQ_FINISHED;
spin_unlock(&fuse_lock);
if (req->background) {
@@ -641,7 +642,7 @@
req = list_entry(fc->pending.next, struct fuse_req, list);
req->state = FUSE_REQ_READING;
- list_del_init(&req->list);
+ list_move(&req->list, &fc->io);
in = &req->in;
reqsize = in->h.len;
@@ -675,7 +676,7 @@
request_end(fc, req);
else {
req->state = FUSE_REQ_SENT;
- list_add_tail(&req->list, &fc->processing);
+ list_move_tail(&req->list, &fc->processing);
spin_unlock(&fuse_lock);
}
return reqsize;
@@ -768,7 +769,6 @@
if (!req)
goto err_unlock;
- list_del_init(&req->list);
if (req->interrupted) {
spin_unlock(&fuse_lock);
fuse_copy_finish(&cs);
@@ -776,6 +776,7 @@
request_end(fc, req);
return -ENOENT;
}
+ list_move(&req->list, &fc->io);
req->out.h = oh;
req->locked = 1;
cs.req = req;
@@ -835,7 +836,6 @@
while (!list_empty(head)) {
struct fuse_req *req;
req = list_entry(head->next, struct fuse_req, list);
- list_del_init(&req->list);
req->out.h.error = -ECONNABORTED;
request_end(fc, req);
spin_lock(&fuse_lock);
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index 8cc87eb..5742253 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -124,8 +124,8 @@
* A request to the client
*/
struct fuse_req {
- /** This can be on either unused_list, pending or processing
- lists in fuse_conn */
+ /** This can be on either unused_list, pending processing or
+ io lists in fuse_conn */
struct list_head list;
/** Entry on the background list */
@@ -223,6 +223,9 @@
/** The list of requests being processed */
struct list_head processing;
+ /** The list of requests under I/O */
+ struct list_head io;
+
/** Requests put in the background (RELEASE or any other
interrupted request) */
struct list_head background;
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index ceee75d..d7aaffe 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -382,6 +382,7 @@
init_waitqueue_head(&fc->waitq);
INIT_LIST_HEAD(&fc->pending);
INIT_LIST_HEAD(&fc->processing);
+ INIT_LIST_HEAD(&fc->io);
INIT_LIST_HEAD(&fc->unused_list);
INIT_LIST_HEAD(&fc->background);
sema_init(&fc->outstanding_sem, 1); /* One for INIT */