From: Pekka Enberg <penberg@cs.helsinki.fi>

Add revoke support to ext2, ext3 and ext4 by wiring f_ops->revoke with
generic_file_revoke.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/ext2/file.c |    1 +
 fs/ext3/file.c |    1 +
 fs/ext4/file.c |    1 +
 3 files changed, 3 insertions(+)

diff -puN fs/ext2/file.c~revoke-support-for-ext2-and-ext3 fs/ext2/file.c
--- a/fs/ext2/file.c~revoke-support-for-ext2-and-ext3
+++ a/fs/ext2/file.c
@@ -58,6 +58,7 @@ const struct file_operations ext2_file_o
 	.fsync		= ext2_sync_file,
 	.splice_read	= generic_file_splice_read,
 	.splice_write	= generic_file_splice_write,
+	.revoke		= generic_file_revoke,
 };
 
 #ifdef CONFIG_EXT2_FS_XIP
diff -puN fs/ext3/file.c~revoke-support-for-ext2-and-ext3 fs/ext3/file.c
--- a/fs/ext3/file.c~revoke-support-for-ext2-and-ext3
+++ a/fs/ext3/file.c
@@ -122,6 +122,7 @@ const struct file_operations ext3_file_o
 	.fsync		= ext3_sync_file,
 	.splice_read	= generic_file_splice_read,
 	.splice_write	= generic_file_splice_write,
+	.revoke         = generic_file_revoke,
 };
 
 const struct inode_operations ext3_file_inode_operations = {
diff -puN fs/ext4/file.c~revoke-support-for-ext2-and-ext3 fs/ext4/file.c
--- a/fs/ext4/file.c~revoke-support-for-ext2-and-ext3
+++ a/fs/ext4/file.c
@@ -122,6 +122,7 @@ const struct file_operations ext4_file_o
 	.fsync		= ext4_sync_file,
 	.splice_read	= generic_file_splice_read,
 	.splice_write	= generic_file_splice_write,
+	.revoke         = generic_file_revoke,
 };
 
 const struct inode_operations ext4_file_inode_operations = {
_