diff mbox series

fs/coredump: Use kmap_local_page()

Message ID 20210203223328.558945-1-ira.weiny@intel.com (mailing list archive)
State New, archived
Headers show
Series fs/coredump: Use kmap_local_page() | expand

Commit Message

Ira Weiny Feb. 3, 2021, 10:33 p.m. UTC 
From: Ira Weiny <ira.weiny@intel.com>

In dump_user_range() there is no reason for the mapping to be global.
Use kmap_local_page() rather than kmap.

Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org
Cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
---
 fs/coredump.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/fs/coredump.c b/fs/coredump.c
index a2f6ecc8e345..53f63e176a2a 100644
--- a/fs/coredump.c
+++ b/fs/coredump.c
@@ -894,10 +894,10 @@  int dump_user_range(struct coredump_params *cprm, unsigned long start,
 		 */
 		page = get_dump_page(addr);
 		if (page) {
-			void *kaddr = kmap(page);
+			void *kaddr = kmap_local_page(page);
 
 			stop = !dump_emit(cprm, kaddr, PAGE_SIZE);
-			kunmap(page);
+			kunmap_local(kaddr);
 			put_page(page);
 		} else {
 			stop = !dump_skip(cprm, PAGE_SIZE);