remove inode_setattr

Replace inode_setattr with opencoded variants of it in all callers.  This
moves the remaining call to vmtruncate into the filesystem methods where it
can be replaced with the proper truncate sequence.

In a few cases it was obvious that we would never end up calling vmtruncate
so it was left out in the opencoded variant:

 spufs: explicitly checks for ATTR_SIZE earlier
 btrfs,hugetlbfs,logfs,dlmfs: explicitly clears ATTR_SIZE earlier
 ufs: contains an opencoded simple_seattr + truncate that sets the filesize just above

In addition to that ncpfs called inode_setattr with handcrafted iattrs,
which allowed to trim down the opencoded variant.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 12 insertions, 2 deletions

diff --git a/fs/exofs/inode.c b/fs/exofs/inode.c
index 4bb6ef822e46..4bfc1f4fd013 100644
--- a/fs/exofs/inode.c
+++ b/fs/exofs/inode.c
@@ -887,8 +887,18 @@ int exofs_setattr(struct dentry *dentry, struct iattr *iattr)
         if (error)
                 return error;
 
-        error = inode_setattr(inode, iattr);
-        return error;
+        if ((iattr->ia_valid & ATTR_SIZE) &&
+            iattr->ia_size != i_size_read(inode)) {
+                int error;
+
+                error = vmtruncate(inode, iattr->ia_size);
+                if (error)
+                        return error;
+        }
+
+        setattr_copy(inode, iattr);
+        mark_inode_dirty(inode);
+        return 0;
 }
 
 static const struct osd_attr g_attr_inode_file_layout = ATTR_DEF(