commit f8bd74f98e24305455c02b3b842acf79b3ad9738
Author: Erez Zadok <[EMAIL PROTECTED](none)>
Date: Sun Mar 25 01:24:54 2007 -0400
Merge unionfs_write with __unionfs_write.
Merge the two functions because unionfs_write was a small function and the
only one which called the __unionfs_write. This saves on stack space and
clarifies code a bit.
diff --git a/fs/unionfs/file.c b/fs/unionfs/file.c
index 4da58e1..8817598 100644
--- a/fs/unionfs/file.c
+++ b/fs/unionfs/file.c
@@ -77,17 +77,20 @@ out:
return err;
}
-/* helper function to unionfs_write */
-static ssize_t __unionfs_write(struct file * file, const char __user * buf,
- size_t count, loff_t * ppos)
+static ssize_t unionfs_write(struct file * file, const char __user * buf,
+ size_t count, loff_t *ppos)
{
- int err = -EINVAL;
+ int err;
struct file *hidden_file = NULL;
struct inode *inode;
struct inode *hidden_inode;
loff_t pos = *ppos;
int bstart, bend;
+ unionfs_read_lock(file->f_dentry->d_sb);
+ if ((err = unionfs_file_revalidate(file, 1)))
+ goto out;
+
inode = file->f_dentry->d_inode;
bstart = fbstart(file);
@@ -98,8 +101,10 @@ static ssize_t __unionfs_write(struct file * file, const
char __user * buf,
hidden_file = unionfs_lower_file(file);
hidden_inode = hidden_file->f_dentry->d_inode;
- if (!hidden_file->f_op || !hidden_file->f_op->write)
+ if (!hidden_file->f_op || !hidden_file->f_op->write) {
+ err = -EINVAL;
goto out;
+ }
/* adjust for append -- seek to the end of the file */
if (file->f_flags & O_APPEND)
@@ -120,21 +125,6 @@ static ssize_t __unionfs_write(struct file * file, const
char __user * buf,
if (pos > inode->i_size)
inode->i_size = pos;
out:
- return err;
-}
-
-static ssize_t unionfs_write(struct file * file, const char __user * buf,
- size_t count, loff_t * ppos)
-{
- int err = 0;
-
- unionfs_read_lock(file->f_dentry->d_sb);
- if ((err = unionfs_file_revalidate(file, 1)))
- goto out;
-
- err = __unionfs_write(file, buf, count, ppos);
-
-out:
unionfs_read_unlock(file->f_dentry->d_sb);
return err;
}
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