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Commit aada54f9 authored by Ross Zwisler's avatar Ross Zwisler Committed by Dave Chinner
Browse files

dax: remove the last BUG_ON() from fs/dax.c 



Don't take down the kernel if we get an invalid 'from' and 'length'
argument pair.  Just warn once and return an error.

Signed-off-by: default avatarRoss Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarJan Kara <jack@suse.cz>
Signed-off-by: default avatarDave Chinner <david@fromorbit.com>
parent ce95ab0f

fs/dax.c

+2 −1
Original line number Diff line number Diff line
@@ -1194,7 +1194,8 @@ int dax_zero_page_range(struct inode *inode, loff_t from, unsigned length, 
	/* Block boundary? Nothing to do */

	if (!length)

		return 0;

	BUG_ON((offset + length) > PAGE_SIZE);

	if (WARN_ON_ONCE((offset + length) > PAGE_SIZE))

		return -EINVAL;



	memset(&bh, 0, sizeof(bh));

	bh.b_bdev = inode->i_sb->s_bdev;