diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c index de4a0a0bda8a6bd55a792a492c8ce1acb6eda20b..c72e44b58d098b197b740ec720389e2ae7c63583 100644 --- a/fs/fuse/dev.c +++ b/fs/fuse/dev.c @@ -109,18 +109,24 @@ struct fuse_req *fuse_get_request(struct fuse_conn *fc) int intr; sigset_t oldset; + atomic_inc(&fc->num_waiting); block_sigs(&oldset); intr = down_interruptible(&fc->outstanding_sem); restore_sigs(&oldset); - return intr ? NULL : do_get_request(fc); + if (intr) { + atomic_dec(&fc->num_waiting); + return NULL; + } + return do_get_request(fc); } static void fuse_putback_request(struct fuse_conn *fc, struct fuse_req *req) { spin_lock(&fuse_lock); - if (req->preallocated) + if (req->preallocated) { + atomic_dec(&fc->num_waiting); list_add(&req->list, &fc->unused_list); - else + } else fuse_request_free(req); /* If we are in debt decrease that first */ diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h index 6ef1e5f5873ba4b9c0a985c1aee735dcad936cad..bcb453f681119373b88a1a2894bb4820b3f0f170 100644 --- a/fs/fuse/fuse_i.h +++ b/fs/fuse/fuse_i.h @@ -280,6 +280,9 @@ struct fuse_conn { /** Is create not implemented by fs? */ unsigned no_create : 1; + /** The number of requests waiting for completion */ + atomic_t num_waiting; + /** Negotiated minor version */ unsigned minor; diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index 514b700c863da8a324b88b57f3b6c7378a935fbd..182235923cdda95d8ff9526bd3ebefbd731266a9 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -555,7 +555,16 @@ static struct file_system_type fuse_fs_type = { .kill_sb = kill_anon_super, }; +static ssize_t fuse_conn_waiting_show(struct fuse_conn *fc, char *page) +{ + return sprintf(page, "%i\n", atomic_read(&fc->num_waiting)); +} + +static struct fuse_conn_attr fuse_conn_waiting = + __ATTR(waiting, 0400, fuse_conn_waiting_show, NULL); + static struct attribute *fuse_conn_attrs[] = { + &fuse_conn_waiting.attr, NULL, };