aboutsummaryrefslogtreecommitdiffstats
path: root/fs/fuse/file.c
diff options
context:
space:
mode:
authorTejun Heo <tj@kernel.org>2009-04-14 10:54:49 +0900
committerMiklos Szeredi <mszeredi@suse.cz>2009-04-28 16:56:35 +0200
commit6b2db28a7a2da1064df9e179d9b6d07b0bfe156a (patch)
tree9e24b6876a7b91de466e8a87523a41de694d2148 /fs/fuse/file.c
parentfd9db7297749c05fcf5721ce5393a5a8b8772f2a (diff)
fuse: misc cleanups
* fuse_file_alloc() was structured in weird way. The success path was split between else block and code following the block. Restructure the code such that it's easier to read and modify. * Unindent success path of fuse_release_common() to ease future changes. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Diffstat (limited to 'fs/fuse/file.c')
-rw-r--r--fs/fuse/file.c81
1 files changed, 44 insertions, 37 deletions
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 06f30e965676..028e17decf2f 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -49,22 +49,26 @@ static int fuse_send_open(struct inode *inode, struct file *file, int isdir,
struct fuse_file *fuse_file_alloc(struct fuse_conn *fc)
{
struct fuse_file *ff;
+
ff = kmalloc(sizeof(struct fuse_file), GFP_KERNEL);
- if (ff) {
- ff->reserved_req = fuse_request_alloc();
- if (!ff->reserved_req) {
- kfree(ff);
- return NULL;
- } else {
- INIT_LIST_HEAD(&ff->write_entry);
- atomic_set(&ff->count, 0);
- spin_lock(&fc->lock);
- ff->kh = ++fc->khctr;
- spin_unlock(&fc->lock);
- }
- RB_CLEAR_NODE(&ff->polled_node);
- init_waitqueue_head(&ff->poll_wait);
+ if (unlikely(!ff))
+ return NULL;
+
+ ff->reserved_req = fuse_request_alloc();
+ if (unlikely(!ff->reserved_req)) {
+ kfree(ff);
+ return NULL;
}
+
+ INIT_LIST_HEAD(&ff->write_entry);
+ atomic_set(&ff->count, 0);
+ RB_CLEAR_NODE(&ff->polled_node);
+ init_waitqueue_head(&ff->poll_wait);
+
+ spin_lock(&fc->lock);
+ ff->kh = ++fc->khctr;
+ spin_unlock(&fc->lock);
+
return ff;
}
@@ -158,34 +162,37 @@ void fuse_release_fill(struct fuse_file *ff, u64 nodeid, int flags, int opcode)
int fuse_release_common(struct inode *inode, struct file *file, int isdir)
{
- struct fuse_file *ff = file->private_data;
- if (ff) {
- struct fuse_conn *fc = get_fuse_conn(inode);
- struct fuse_req *req = ff->reserved_req;
+ struct fuse_conn *fc;
+ struct fuse_file *ff;
+ struct fuse_req *req;
- fuse_release_fill(ff, get_node_id(inode), file->f_flags,
- isdir ? FUSE_RELEASEDIR : FUSE_RELEASE);
+ ff = file->private_data;
+ if (unlikely(!ff))
+ return 0; /* return value is ignored by VFS */
- /* Hold vfsmount and dentry until release is finished */
- req->misc.release.vfsmount = mntget(file->f_path.mnt);
- req->misc.release.dentry = dget(file->f_path.dentry);
+ fc = get_fuse_conn(inode);
+ req = ff->reserved_req;
- spin_lock(&fc->lock);
- list_del(&ff->write_entry);
- if (!RB_EMPTY_NODE(&ff->polled_node))
- rb_erase(&ff->polled_node, &fc->polled_files);
- spin_unlock(&fc->lock);
+ fuse_release_fill(ff, get_node_id(inode), file->f_flags,
+ isdir ? FUSE_RELEASEDIR : FUSE_RELEASE);
- wake_up_interruptible_sync(&ff->poll_wait);
- /*
- * Normally this will send the RELEASE request,
- * however if some asynchronous READ or WRITE requests
- * are outstanding, the sending will be delayed
- */
- fuse_file_put(ff);
- }
+ /* Hold vfsmount and dentry until release is finished */
+ req->misc.release.vfsmount = mntget(file->f_path.mnt);
+ req->misc.release.dentry = dget(file->f_path.dentry);
+
+ spin_lock(&fc->lock);
+ list_del(&ff->write_entry);
+ if (!RB_EMPTY_NODE(&ff->polled_node))
+ rb_erase(&ff->polled_node, &fc->polled_files);
+ spin_unlock(&fc->lock);
- /* Return value is ignored by VFS */
+ wake_up_interruptible_sync(&ff->poll_wait);
+ /*
+ * Normally this will send the RELEASE request, however if
+ * some asynchronous READ or WRITE requests are outstanding,
+ * the sending will be delayed.
+ */
+ fuse_file_put(ff);
return 0;
}

Privacy Policy