From de4eda9de2d957ef2d6a8365a01e26a435e958cb Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 15 Sep 2022 20:25:47 -0400 Subject: use less confusing names for iov_iter direction initializers READ/WRITE proved to be actively confusing - the meanings are "data destination, as used with read(2)" and "data source, as used with write(2)", but people keep interpreting those as "we read data from it" and "we write data to it", i.e. exactly the wrong way. Call them ITER_DEST and ITER_SOURCE - at least that is harder to misinterpret... Signed-off-by: Al Viro --- mm/madvise.c | 2 +- mm/page_io.c | 4 ++-- mm/process_vm_access.c | 2 +- 3 files changed, 4 insertions(+), 4 deletions(-) (limited to 'mm') diff --git a/mm/madvise.c b/mm/madvise.c index c7105ec6d08c..bc54b806f1a7 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -1459,7 +1459,7 @@ SYSCALL_DEFINE5(process_madvise, int, pidfd, const struct iovec __user *, vec, goto out; } - ret = import_iovec(READ, vec, vlen, ARRAY_SIZE(iovstack), &iov, &iter); + ret = import_iovec(ITER_DEST, vec, vlen, ARRAY_SIZE(iovstack), &iov, &iter); if (ret < 0) goto out; diff --git a/mm/page_io.c b/mm/page_io.c index 2af34dd8fa4d..3a5f921b932e 100644 --- a/mm/page_io.c +++ b/mm/page_io.c @@ -376,7 +376,7 @@ void swap_write_unplug(struct swap_iocb *sio) struct address_space *mapping = sio->iocb.ki_filp->f_mapping; int ret; - iov_iter_bvec(&from, WRITE, sio->bvec, sio->pages, sio->len); + iov_iter_bvec(&from, ITER_SOURCE, sio->bvec, sio->pages, sio->len); ret = mapping->a_ops->swap_rw(&sio->iocb, &from); if (ret != -EIOCBQUEUED) sio_write_complete(&sio->iocb, ret); @@ -530,7 +530,7 @@ void __swap_read_unplug(struct swap_iocb *sio) struct address_space *mapping = sio->iocb.ki_filp->f_mapping; int ret; - iov_iter_bvec(&from, READ, sio->bvec, sio->pages, sio->len); + iov_iter_bvec(&from, ITER_DEST, sio->bvec, sio->pages, sio->len); ret = mapping->a_ops->swap_rw(&sio->iocb, &from); if (ret != -EIOCBQUEUED) sio_read_complete(&sio->iocb, ret); diff --git a/mm/process_vm_access.c b/mm/process_vm_access.c index 4bcc11958089..78dfaf9e8990 100644 --- a/mm/process_vm_access.c +++ b/mm/process_vm_access.c @@ -263,7 +263,7 @@ static ssize_t process_vm_rw(pid_t pid, struct iovec *iov_r; struct iov_iter iter; ssize_t rc; - int dir = vm_write ? WRITE : READ; + int dir = vm_write ? ITER_SOURCE : ITER_DEST; if (flags != 0) return -EINVAL; -- cgit v1.2.3