Handle partial writes more gracefully: return partial byte counts, return

ENOSPC only if no partial count or error code available.  Based on fix
from Mikhail Ryleev.

diff --git a/yaffs_fs.c b/yaffs_fs.c
index 3ded1fe8751bdfb8e52aa17daf507bd303702c87..cc4f68abdd3c5e042c67ff3d0665bb60e28c0d74 100644 (file)
--- a/yaffs_fs.c
+++ b/yaffs_fs.c
@@ -31,7 +31,7 @@
  */
 
 const char *yaffs_fs_c_version =
  */
 
 const char *yaffs_fs_c_version =

-    "$Id: yaffs_fs.c,v 1.39 2006-01-24 22:22:52 tpoynor Exp $";
+    "$Id: yaffs_fs.c,v 1.40 2006-01-25 01:21:08 tpoynor Exp $";

 extern const char *yaffs_guts_c_version;
 
 #include <linux/config.h>
 extern const char *yaffs_guts_c_version;
 
 #include <linux/config.h>


@@ -628,9 +628,9 @@ static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset,
 
        T(YAFFS_TRACE_OS,
          (KERN_DEBUG "yaffs_commit_write returning %d\n",
 
        T(YAFFS_TRACE_OS,
          (KERN_DEBUG "yaffs_commit_write returning %d\n",

-          nWritten == nBytes ? 0 : -1));
+          nWritten == nBytes ? 0 : nWritten));

 
 

-       return nWritten == nBytes ? 0 : -1;
+       return nWritten == nBytes ? 0 : nWritten;

 
 }
 
 
 }
 


@@ -788,8 +788,7 @@ static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n,
 
        }
        yaffs_GrossUnlock(dev);
 
        }
        yaffs_GrossUnlock(dev);

-
-       return nWritten != n ? -ENOSPC : nWritten;
+       return nWritten == 0 ? -ENOSPC : nWritten;

 }
 
 static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir)
 }
 
 static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir)