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authorAl Viro <viro@zeniv.linux.org.uk>2021-04-30 18:39:25 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2021-06-10 11:45:24 -0400
commit893839fd57330ce226d4ee1b16fd5221a27fb6ec (patch)
tree5b974a4bb4d6f393fa8aa4099c02ad28bc393e11 /lib/iov_iter.c
parent2495bdcc86dc5e6b71b6785e1faa76452496c687 (diff)
pipe_zero(): we don't need no stinkin' kmap_atomic()...
FWIW, memcpy_to_page() itself almost certainly ought to use kmap_local_page()... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'lib/iov_iter.c')
-rw-r--r--lib/iov_iter.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/iov_iter.c b/lib/iov_iter.c
index 3b442d25a966..a827991f2644 100644
--- a/lib/iov_iter.c
+++ b/lib/iov_iter.c
@@ -897,7 +897,9 @@ static size_t pipe_zero(size_t bytes, struct iov_iter *i)
do {
size_t chunk = min_t(size_t, n, PAGE_SIZE - off);
- memzero_page(pipe->bufs[i_head & p_mask].page, off, chunk);
+ char *p = kmap_local_page(pipe->bufs[i_head & p_mask].page);
+ memset(p + off, 0, chunk);
+ kunmap_local(p);
i->head = i_head;
i->iov_offset = off + chunk;
n -= chunk;