[PATCH] fuse: clean up fuse_lookup()

Simplify fuse_lookup() and related functions.

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/dir.c b/fs/fuse/dir.c
index 51f5da6..0d1438a 100644 (file)
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -13,7 +13,6 @@
 #include <linux/gfp.h>
 #include <linux/sched.h>
 #include <linux/namei.h>
-#include <linux/mount.h>
 
 static inline unsigned long time_to_jiffies(unsigned long sec,
                                            unsigned long nsec)
@@ -22,6 +21,13 @@ static inline unsigned long time_to_jiffies(unsigned long sec,
        return jiffies + timespec_to_jiffies(&ts);
 }
 
+static void fuse_change_timeout(struct dentry *entry, struct fuse_entry_out *o)
+{
+       struct fuse_inode *fi = get_fuse_inode(entry->d_inode);
+       entry->d_time = time_to_jiffies(o->entry_valid, o->entry_valid_nsec);
+       fi->i_time = time_to_jiffies(o->attr_valid, o->attr_valid_nsec);
+}
+
 static void fuse_lookup_init(struct fuse_req *req, struct inode *dir,
                             struct dentry *entry,
                             struct fuse_entry_out *outarg)
@@ -66,10 +72,7 @@ static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd)
                        return 0;
 
                fuse_change_attributes(inode, &outarg.attr);
-               entry->d_time = time_to_jiffies(outarg.entry_valid,
-                                               outarg.entry_valid_nsec);
-               fi->i_time = time_to_jiffies(outarg.attr_valid,
-                                            outarg.attr_valid_nsec);
+               fuse_change_timeout(entry, &outarg);
        }
        return 1;
 }
@@ -96,8 +99,8 @@ static struct dentry_operations fuse_dentry_operations = {
        .d_revalidate   = fuse_dentry_revalidate,
 };
 
-static int fuse_lookup_iget(struct inode *dir, struct dentry *entry,
-                           struct inode **inodep)
+static struct dentry *fuse_lookup(struct inode *dir, struct dentry *entry,
+                                 struct nameidata *nd)
 {
        int err;
        struct fuse_entry_out outarg;
@@ -106,11 +109,11 @@ static int fuse_lookup_iget(struct inode *dir, struct dentry *entry,
        struct fuse_req *req;
 
        if (entry->d_name.len > FUSE_NAME_MAX)
-               return -ENAMETOOLONG;
+               return ERR_PTR(-ENAMETOOLONG);
 
        req = fuse_get_request(fc);
        if (!req)
-               return -EINTR;
+               return ERR_PTR(-EINTR);
 
        fuse_lookup_init(req, dir, entry, &outarg);
        request_send(fc, req);
@@ -122,24 +125,22 @@ static int fuse_lookup_iget(struct inode *dir, struct dentry *entry,
                                  &outarg.attr);
                if (!inode) {
                        fuse_send_forget(fc, req, outarg.nodeid, 1);
-                       return -ENOMEM;
+                       return ERR_PTR(-ENOMEM);
                }
        }
        fuse_put_request(fc, req);
        if (err && err != -ENOENT)
-               return err;
+               return ERR_PTR(err);
 
-       if (inode) {
-               struct fuse_inode *fi = get_fuse_inode(inode);
-               entry->d_time = time_to_jiffies(outarg.entry_valid,
-                                               outarg.entry_valid_nsec);
-               fi->i_time = time_to_jiffies(outarg.attr_valid,
-                                            outarg.attr_valid_nsec);
+       if (inode && dir_alias(inode)) {
+               iput(inode);
+               return ERR_PTR(-EIO);
        }
-
+       d_add(entry, inode);
        entry->d_op = &fuse_dentry_operations;
-       *inodep = inode;
-       return 0;
+       if (inode)
+               fuse_change_timeout(entry, &outarg);
+       return NULL;
 }
 
 void fuse_invalidate_attr(struct inode *inode)
@@ -163,7 +164,6 @@ static int fuse_create_open(struct inode *dir, struct dentry *entry, int mode,
        struct fuse_open_in inarg;
        struct fuse_open_out outopen;
        struct fuse_entry_out outentry;
-       struct fuse_inode *fi;
        struct fuse_file *ff;
        struct file *file;
        int flags = nd->intent.open.flags - 1;
@@ -224,13 +224,8 @@ static int fuse_create_open(struct inode *dir, struct dentry *entry, int mode,
                goto out_put_request;
        }
        fuse_put_request(fc, req);
-       entry->d_time = time_to_jiffies(outentry.entry_valid,
-                                       outentry.entry_valid_nsec);
-       fi = get_fuse_inode(inode);
-       fi->i_time = time_to_jiffies(outentry.attr_valid,
-                                    outentry.attr_valid_nsec);
-
        d_instantiate(entry, inode);
+       fuse_change_timeout(entry, &outentry);
        file = lookup_instantiate_filp(nd, entry, generic_file_open);
        if (IS_ERR(file)) {
                ff->fh = outopen.fh;
@@ -254,7 +249,6 @@ static int create_new_entry(struct fuse_conn *fc, struct fuse_req *req,
 {
        struct fuse_entry_out outarg;
        struct inode *inode;
-       struct fuse_inode *fi;
        int err;
 
        req->in.h.nodeid = get_node_id(dir);
@@ -286,14 +280,8 @@ static int create_new_entry(struct fuse_conn *fc, struct fuse_req *req,
                return -EIO;
        }
 
-       entry->d_time = time_to_jiffies(outarg.entry_valid,
-                                       outarg.entry_valid_nsec);
-
-       fi = get_fuse_inode(inode);
-       fi->i_time = time_to_jiffies(outarg.attr_valid,
-                                    outarg.attr_valid_nsec);
-
        d_instantiate(entry, inode);
+       fuse_change_timeout(entry, &outarg);
        fuse_invalidate_attr(dir);
        return 0;
 }
@@ -883,23 +871,6 @@ static int fuse_getattr(struct vfsmount *mnt, struct dentry *entry,
        return err;
 }
 
-static struct dentry *fuse_lookup(struct inode *dir, struct dentry *entry,
-                                 struct nameidata *nd)
-{
-       struct inode *inode;
-       int err;
-
-       err = fuse_lookup_iget(dir, entry, &inode);
-       if (err)
-               return ERR_PTR(err);
-       if (inode && dir_alias(inode)) {
-               iput(inode);
-               return ERR_PTR(-EIO);
-       }
-       d_add(entry, inode);
-       return NULL;
-}
-
 static int fuse_setxattr(struct dentry *entry, const char *name,
                         const void *value, size_t size, int flags)
 {