diff options
| author | Jens Axboe | 2023-03-29 09:16:45 -0600 |
|---|---|---|
| committer | Jens Axboe | 2023-03-30 08:12:29 -0600 |
| commit | 95e49cf8373a0a4d1ec85f0512080bb4f945df74 (patch) | |
| tree | a4fb24a611ed5d3357a785dc7f561981d379a620 /mm | |
| parent | e4d3202c18329ba2733c9e04489b6ef05d3bce08 (diff) | |
iov_iter: add iter_iov_addr() and iter_iov_len() helpers
These just return the address and length of the current iovec segment
in the iterator. Convert existing iov_iter_iovec() users to use them
instead of getting a copy of the current vec.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/madvise.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/mm/madvise.c b/mm/madvise.c index 340125d08c03..9f389c5304d2 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -1456,7 +1456,7 @@ SYSCALL_DEFINE5(process_madvise, int, pidfd, const struct iovec __user *, vec, size_t, vlen, int, behavior, unsigned int, flags) { ssize_t ret; - struct iovec iovstack[UIO_FASTIOV], iovec; + struct iovec iovstack[UIO_FASTIOV]; struct iovec *iov = iovstack; struct iov_iter iter; struct task_struct *task; @@ -1503,12 +1503,11 @@ SYSCALL_DEFINE5(process_madvise, int, pidfd, const struct iovec __user *, vec, total_len = iov_iter_count(&iter); while (iov_iter_count(&iter)) { - iovec = iov_iter_iovec(&iter); - ret = do_madvise(mm, (unsigned long)iovec.iov_base, - iovec.iov_len, behavior); + ret = do_madvise(mm, (unsigned long)iter_iov_addr(&iter), + iter_iov_len(&iter), behavior); if (ret < 0) break; - iov_iter_advance(&iter, iovec.iov_len); + iov_iter_advance(&iter, iter_iov_len(&iter)); } ret = (total_len - iov_iter_count(&iter)) ? : ret; |