[PATCH] Add support to check for FALLOC_FL_COLLAPSE_RANGE and FALLOC_FL_ZERO_RANGE crap modes

[Nicholas Krause]

This adds checks for the stated modes as if they are crap we will return error
not supported.

Signed-off-by: Nicholas Krause <xerofoify@xxxxxxxxx>
---
 fs/btrfs/file.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 1f2b99c..599495a 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -2490,7 +2490,8 @@ static long btrfs_fallocate(struct file *file, int mode,
 	alloc_end = round_up(offset + len, blocksize);
 
 	/* Make sure we aren't being give some crap mode */
-	if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE))
+	if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE|
+	FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE))
 		return -EOPNOTSUPP;
 
 	if (mode & FALLOC_FL_PUNCH_HOLE)
-- 
1.7.10.4

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