diff options
author | Al Viro <viro@zeniv.linux.org.uk> | 2024-04-07 02:42:36 -0400 |
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committer | Al Viro <viro@zeniv.linux.org.uk> | 2024-04-07 02:42:36 -0400 |
commit | e82051193a171f393d2a165a7ce18d8a2e2b4837 (patch) | |
tree | afb78295d4390ae7034f86589f0fd980dfb74d3e /include/linux | |
parent | 39cd87c4eb2b893354f3b850f916353f2658ae6f (diff) |
new helper: copy_to_iter_full()
... and convert copy_linear_skb() to using that.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include/linux')
-rw-r--r-- | include/linux/uio.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/uio.h b/include/linux/uio.h index 00cebe2b70de..7020adedfa08 100644 --- a/include/linux/uio.h +++ b/include/linux/uio.h @@ -206,6 +206,16 @@ size_t copy_from_iter(void *addr, size_t bytes, struct iov_iter *i) } static __always_inline __must_check +bool copy_to_iter_full(const void *addr, size_t bytes, struct iov_iter *i) +{ + size_t copied = copy_to_iter(addr, bytes, i); + if (likely(copied == bytes)) + return true; + iov_iter_revert(i, copied); + return false; +} + +static __always_inline __must_check bool copy_from_iter_full(void *addr, size_t bytes, struct iov_iter *i) { size_t copied = copy_from_iter(addr, bytes, i); |