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authorJens Axboe <axboe@kernel.dk>2019-05-15 01:02:22 +0300
committerJens Axboe <axboe@kernel.dk>2019-06-01 00:30:03 +0300
commit87e5e6dab6c2a21fab2620f37786276d202e2ce0 (patch)
tree617496186deb33cc30c77506130bc21973c77710 /include/linux/uio.h
parent61939b12dc24d0ac958020f261046c35a16e0c48 (diff)
downloadlinux-87e5e6dab6c2a21fab2620f37786276d202e2ce0.tar.xz
uio: make import_iovec()/compat_import_iovec() return bytes on success
Currently these functions return < 0 on error, and 0 for success. Change that so that we return < 0 on error, but number of bytes for success. Some callers already treat the return value that way, others need a slight tweak. Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/uio.h')
-rw-r--r--include/linux/uio.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/uio.h b/include/linux/uio.h
index 2d0131ad4604..a61ceb6575ab 100644
--- a/include/linux/uio.h
+++ b/include/linux/uio.h
@@ -279,13 +279,13 @@ bool csum_and_copy_from_iter_full(void *addr, size_t bytes, __wsum *csum, struct
size_t hash_and_copy_to_iter(const void *addr, size_t bytes, void *hashp,
struct iov_iter *i);
-int import_iovec(int type, const struct iovec __user * uvector,
+ssize_t import_iovec(int type, const struct iovec __user * uvector,
unsigned nr_segs, unsigned fast_segs,
struct iovec **iov, struct iov_iter *i);
#ifdef CONFIG_COMPAT
struct compat_iovec;
-int compat_import_iovec(int type, const struct compat_iovec __user * uvector,
+ssize_t compat_import_iovec(int type, const struct compat_iovec __user * uvector,
unsigned nr_segs, unsigned fast_segs,
struct iovec **iov, struct iov_iter *i);
#endif