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[5/6] Btrfs: fail if we try to use hole punch

Message ID 1289248327-16308-5-git-send-email-josef@redhat.com
State New, archived
Headers show

Commit Message

Josef Bacik Nov. 8, 2010, 8:32 p.m. UTC
None
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Patch

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 78877d7..c590add 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -6936,6 +6936,10 @@  static long btrfs_fallocate(struct inode *inode, int mode,
 	alloc_start = offset & ~mask;
 	alloc_end =  (offset + len + mask) & ~mask;
 
+	/* We only support the FALLOC_FL_KEEP_SIZE mode */
+	if (mode && (mode & FALLOC_FL_KEEP_SIZE))
+		return -EOPNOTSUPP;
+
 	/*
 	 * wait for ordered IO before we have any locks.  We'll loop again
 	 * below with the locks held.