Unverified Commit 9ba439cb authored by Brian Foster's avatar Brian Foster Committed by Christian Brauner
Browse files

dax: advance the iomap_iter on unshare range 



Advance the iter and return 0 or an error code for success or
failure.

Signed-off-by: default avatarBrian Foster <bfoster@redhat.com>
Link: https://lore.kernel.org/r/20250224144757.237706-8-bfoster@redhat.com


Reviewed-by: default avatar"Darrick J. Wong" <djwong@kernel.org>
Signed-off-by: default avatarChristian Brauner <brauner@kernel.org>
parent 80fce305

fs/dax.c

+5 −3
Original line number Diff line number Diff line
@@ -1266,11 +1266,11 @@ static s64 dax_unshare_iter(struct iomap_iter *iter) 
	u64 copy_len = iomap_length(iter);

	u32 mod;

	int id = 0;

	s64 ret = 0;

	s64 ret = iomap_length(iter);

	void *daddr = NULL, *saddr = NULL;



	if (!iomap_want_unshare_iter(iter))

		return iomap_length(iter);

		return iomap_iter_advance(iter, &ret);



	/*

	 * Extend the file range to be aligned to fsblock/pagesize, because
@@ -1307,7 +1307,9 @@ static s64 dax_unshare_iter(struct iomap_iter *iter) 


out_unlock:

	dax_read_unlock(id);

	if (ret < 0)

		return dax_mem2blk_err(ret);

	return iomap_iter_advance(iter, &ret);

}



int dax_file_unshare(struct inode *inode, loff_t pos, loff_t len,