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dax: advance the iomap_iter on unshare range

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

Signed-off-by: Brian Foster <bfoster@redhat.com>
Link: https://lore.kernel.org/r/20250224144757.237706-8-bfoster@redhat.com
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Brian Foster
2025-02-24 09:47:52 -05:00
committed by Christian Brauner
parent 80fce30584
commit 9ba439cbdc
1 changed files with 5 additions and 3 deletions
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8
fs/dax.c
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@@ -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);
return dax_mem2blk_err(ret);
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,