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orangefs_bufmap_copy_from_iovec(): fix EFAULT handling 

short copy here should mean instant EFAULT, not "move to the
next page and hope it fails there, this time with nothing
copied"

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2017-04-13 03:10:18 -04:00
parent 4f7d029b9b
commit 890559e34e
1 changed files with 1 additions and 3 deletions
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4
fs/orangefs/orangefs-bufmap.c
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@ -521,13 +521,11 @@ int orangefs_bufmap_copy_from_iovec(struct iov_iter *iter,
size_t n = size;
if (n > PAGE_SIZE)
n = PAGE_SIZE;
n = copy_page_from_iter(page, 0, n, iter);
if (!n)
if (copy_page_from_iter(page, 0, n, iter) != n)
return -EFAULT;
size -= n;
}
return 0;
}
/*