From dfd52db81c4496f1e814a0fdb08b4a95bb4ca002 Mon Sep 17 00:00:00 2001
From: Nick Desaulniers <ndesaulniers@google.com>
Date: Mon, 18 Jul 2016 12:45:17 -0700
Subject: [PATCH] fs: ext4: disable support for fallocate FALLOC_FL_PUNCH_HOLE
Bug: 28760453
Change-Id: I019c2de559db9e4b95860ab852211b456d78c4ca
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
---
fs/ext4/inode.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index f9e11df768d5..5405075ef98d 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -3574,6 +3574,7 @@ int ext4_can_truncate(struct inode *inode)
int ext4_punch_hole(struct file *file, loff_t offset, loff_t length)
{
+#if 0
struct inode *inode = file_inode(file);
struct super_block *sb = inode->i_sb;
ext4_lblk_t first_block, stop_block;
@@ -3759,6 +3760,12 @@ out_dio:
out_mutex:
mutex_unlock(&inode->i_mutex);
return ret;
+#else
+ /*
+ * Disabled as per b/28760453
+ */
+ return -EOPNOTSUPP;
+#endif
}
/*
--
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