4 files changed, 57 insertions, 30 deletions

diff --git a/fs/jfs/file.c b/fs/jfs/file.c
index 127263c..c5ce6c1 100644
--- a/fs/jfs/file.c
+++ b/fs/jfs/file.c
@@ -17,6 +17,7 @@
  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  */
 
+#include <linux/mm.h>
 #include <linux/fs.h>
 #include <linux/quotaops.h>
 #include "jfs_incore.h"
@@ -107,11 +108,18 @@ int jfs_setattr(struct dentry *dentry, struct iattr *iattr)
 			return rc;
 	}
 
-	rc = inode_setattr(inode, iattr);
+	if ((iattr->ia_valid & ATTR_SIZE) &&
+	    iattr->ia_size != i_size_read(inode)) {
+		rc = vmtruncate(inode, iattr->ia_size);
+		if (rc)
+			return rc;
+	}
 
-	if (!rc && (iattr->ia_valid & ATTR_MODE))
-		rc = jfs_acl_chmod(inode);
+	setattr_copy(inode, iattr);
+	mark_inode_dirty(inode);
 
+	if (iattr->ia_valid & ATTR_MODE)
+		rc = jfs_acl_chmod(inode);
 	return rc;
 }
 
diff --git a/fs/jfs/inode.c b/fs/jfs/inode.c
index ed9ba6f..9978803 100644
--- a/fs/jfs/inode.c
+++ b/fs/jfs/inode.c
@@ -145,31 +145,32 @@ int jfs_write_inode(struct inode *inode, struct writeback_control *wbc)
 		return 0;
 }
 
-void jfs_delete_inode(struct inode *inode)
+void jfs_evict_inode(struct inode *inode)
 {
-	jfs_info("In jfs_delete_inode, inode = 0x%p", inode);
+	jfs_info("In jfs_evict_inode, inode = 0x%p", inode);
 
-	if (!is_bad_inode(inode))
+	if (!inode->i_nlink && !is_bad_inode(inode)) {
 		dquot_initialize(inode);
 
-	if (!is_bad_inode(inode) &&
-	    (JFS_IP(inode)->fileset == FILESYSTEM_I)) {
-		truncate_inode_pages(&inode->i_data, 0);
+		if (JFS_IP(inode)->fileset == FILESYSTEM_I) {
+			truncate_inode_pages(&inode->i_data, 0);
 
-		if (test_cflag(COMMIT_Freewmap, inode))
-			jfs_free_zero_link(inode);
+			if (test_cflag(COMMIT_Freewmap, inode))
+				jfs_free_zero_link(inode);
 
-		diFree(inode);
+			diFree(inode);
 
-		/*
-		 * Free the inode from the quota allocation.
-		 */
-		dquot_initialize(inode);
-		dquot_free_inode(inode);
-		dquot_drop(inode);
+			/*
+			 * Free the inode from the quota allocation.
+			 */
+			dquot_initialize(inode);
+			dquot_free_inode(inode);
+		}
+	} else {
+		truncate_inode_pages(&inode->i_data, 0);
 	}
-
-	clear_inode(inode);
+	end_writeback(inode);
+	dquot_drop(inode);
 }
 
 void jfs_dirty_inode(struct inode *inode)
@@ -303,8 +304,17 @@ static int jfs_write_begin(struct file *file, struct address_space *mapping,
 				loff_t pos, unsigned len, unsigned flags,
 				struct page **pagep, void **fsdata)
 {
-	return nobh_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
+	int ret;
+
+	ret = nobh_write_begin(mapping, pos, len, flags, pagep, fsdata,
 				jfs_get_block);
+	if (unlikely(ret)) {
+		loff_t isize = mapping->host->i_size;
+		if (pos + len > isize)
+			vmtruncate(mapping->host, isize);
+	}
+
+	return ret;
 }
 
 static sector_t jfs_bmap(struct address_space *mapping, sector_t block)
@@ -317,9 +327,24 @@ static ssize_t jfs_direct_IO(int rw, struct kiocb *iocb,
 {
 	struct file *file = iocb->ki_filp;
 	struct inode *inode = file->f_mapping->host;
+	ssize_t ret;
 
-	return blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
+	ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
 				offset, nr_segs, jfs_get_block, NULL);
+
+	/*
+	 * In case of error extending write may have instantiated a few
+	 * blocks outside i_size. Trim these off again.
+	 */
+	if (unlikely((rw & WRITE) && ret < 0)) {
+		loff_t isize = i_size_read(inode);
+		loff_t end = offset + iov_length(iov, nr_segs);
+
+		if (end > isize)
+			vmtruncate(inode, isize);
+	}
+
+	return ret;
 }
 
 const struct address_space_operations jfs_aops = {
diff --git a/fs/jfs/jfs_inode.h b/fs/jfs/jfs_inode.h
index 11042b1..155e91e 100644
--- a/fs/jfs/jfs_inode.h
+++ b/fs/jfs/jfs_inode.h
@@ -27,7 +27,7 @@ extern long jfs_compat_ioctl(struct file *, unsigned int, unsigned long);
 extern struct inode *jfs_iget(struct super_block *, unsigned long);
 extern int jfs_commit_inode(struct inode *, int);
 extern int jfs_write_inode(struct inode *, struct writeback_control *);
-extern void jfs_delete_inode(struct inode *);
+extern void jfs_evict_inode(struct inode *);
 extern void jfs_dirty_inode(struct inode *);
 extern void jfs_truncate(struct inode *);
 extern void jfs_truncate_nolock(struct inode *, loff_t);
diff --git a/fs/jfs/super.c b/fs/jfs/super.c
index b38f96b..ec8c3e4 100644
--- a/fs/jfs/super.c
+++ b/fs/jfs/super.c
@@ -132,11 +132,6 @@ static void jfs_destroy_inode(struct inode *inode)
 	kmem_cache_free(jfs_inode_cachep, ji);
 }
 
-static void jfs_clear_inode(struct inode *inode)
-{
-	dquot_drop(inode);
-}
-
 static int jfs_statfs(struct dentry *dentry, struct kstatfs *buf)
 {
 	struct jfs_sb_info *sbi = JFS_SBI(dentry->d_sb);
@@ -765,8 +760,7 @@ static const struct super_operations jfs_super_operations = {
 	.destroy_inode	= jfs_destroy_inode,
 	.dirty_inode	= jfs_dirty_inode,
 	.write_inode	= jfs_write_inode,
-	.delete_inode	= jfs_delete_inode,
-	.clear_inode	= jfs_clear_inode,
+	.evict_inode	= jfs_evict_inode,
 	.put_super	= jfs_put_super,
 	.sync_fs	= jfs_sync_fs,
 	.freeze_fs	= jfs_freeze,