1 files changed, 9 insertions, 13 deletions

diff --git a/file.c b/file.c
index 981d474..297fd1c 100644
--- a/file.c
+++ b/file.c
@@ -56,17 +56,16 @@ int
 fileread(struct file *f, char *addr, int n)
 {
   int r;
-  struct inode *ip;
 
   if(f->readable == 0)
     return -1;
   if(f->type == FD_PIPE)
     return pipe_read(f->pipe, addr, n);
   if(f->type == FD_INODE){
-    ip = ilock(f->ip);
-    if((r = readi(ip, addr, f->off, n)) > 0)
+    ilock(f->ip);
+    if((r = readi(f->ip, addr, f->off, n)) > 0)
       f->off += r;
-    iunlock(ip);
+    iunlock(f->ip);
     return r;
   }
   panic("fileread");
@@ -77,17 +76,16 @@ int
 filewrite(struct file *f, char *addr, int n)
 {
   int r;
-  struct inode *ip;
 
   if(f->writable == 0)
     return -1;
   if(f->type == FD_PIPE)
     return pipe_write(f->pipe, addr, n);
   if(f->type == FD_INODE){
-    ip = ilock(f->ip);
-    if((r = writei(ip, addr, f->off, n)) > 0)
+    ilock(f->ip);
+    if((r = writei(f->ip, addr, f->off, n)) > 0)
       f->off += r;
-    iunlock(ip);
+    iunlock(f->ip);
     return r;
   }
   panic("filewrite");
@@ -97,12 +95,10 @@ filewrite(struct file *f, char *addr, int n)
 int
 filestat(struct file *f, struct stat *st)
 {
-  struct inode *ip;
-
   if(f->type == FD_INODE){
-    ip = ilock(f->ip);
-    stati(ip, st);
-    iunlock(ip);
+    ilock(f->ip);
+    stati(f->ip, st);
+    iunlock(f->ip);
     return 0;
   }
   return -1;