tolerate running out of inodes

1 files changed, 4 insertions, 2 deletions

diff --git a/kernel/fs.c b/kernel/fs.c
index b220491..dea5864 100644
--- a/kernel/fs.c
+++ b/kernel/fs.c
@@ -193,7 +193,8 @@ static struct inode* iget(uint dev, uint inum);
 
 // Allocate an inode on device dev.
 // Mark it as allocated by  giving it type type.
-// Returns an unlocked but allocated and referenced inode.
+// Returns an unlocked but allocated and referenced inode,
+// or NULL if there is no free inode..
 struct inode*
 ialloc(uint dev, short type)
 {
@@ -213,7 +214,8 @@ ialloc(uint dev, short type)
     }
     brelse(bp);
   }
-  panic("ialloc: no inodes");
+  printf("ialloc: no inodes\n");
+  return 0;
 }
 
 // Copy a modified in-memory inode to disk.