Commit d6dc8462 authored Nov 17, 2010 by Josef Bacik Committed by Al Viro Jan 12, 2011

Ext4: fail if we try to use hole punch



Ext4 doesn't have the ability to punch holes yet, so make sure we return
EOPNOTSUPP if we try to use hole punching through fallocate.  This support can
be added later.  Thanks,

Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

parent db47fef2

fs/ext4/extents.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -3644,6 +3644,10 @@ long ext4_fallocate(struct inode *inode, int mode, loff_t offset, loff_t len)
		struct ext4_map_blocks map;
		unsigned int credits, blkbits = inode->i_blkbits;

		/* We only support the FALLOC_FL_KEEP_SIZE mode */
		if (mode && (mode != FALLOC_FL_KEEP_SIZE))
		return -EOPNOTSUPP;

		/*
		* currently supporting (pre)allocate mode for extent-based
		* files _only_