coredump: use bvec_set_page to initialize a bvec

Use the bvec_set_page helper to initialize a bvec.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20230203150634.3199647-15-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/fs/coredump.c b/fs/coredump.c
index de78bde..0a6873a 100644 (file)
--- a/fs/coredump.c
+++ b/fs/coredump.c
@@ -840,11 +840,7 @@ static int __dump_skip(struct coredump_params *cprm, size_t nr)
 
 static int dump_emit_page(struct coredump_params *cprm, struct page *page)
 {
-       struct bio_vec bvec = {
-               .bv_page        = page,
-               .bv_offset      = 0,
-               .bv_len         = PAGE_SIZE,
-       };
+       struct bio_vec bvec;
        struct iov_iter iter;
        struct file *file = cprm->file;
        loff_t pos;
@@ -860,6 +856,7 @@ static int dump_emit_page(struct coredump_params *cprm, struct page *page)
        if (dump_interrupted())
                return 0;
        pos = file->f_pos;
+       bvec_set_page(&bvec, page, PAGE_SIZE, 0);
        iov_iter_bvec(&iter, ITER_SOURCE, &bvec, 1, PAGE_SIZE);
        n = __kernel_write_iter(cprm->file, &iter, &pos);
        if (n != PAGE_SIZE)