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authorIra Weiny <ira.weiny@intel.com>2021-02-26 04:22:22 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2021-02-26 20:41:05 +0300
commit3159ed57792be7453793bda27297a423e1c63d6c (patch)
tree774aa3530d912f7c900e396ed4d36049cfdfc508 /fs/coredump.c
parentf9c8bc4604c95a7c55293f244f67753f6e96096f (diff)
downloadlinux-3159ed57792be7453793bda27297a423e1c63d6c.tar.xz
fs/coredump: use kmap_local_page()
In dump_user_range() there is no reason for the mapping to be global. Use kmap_local_page() rather than kmap. Link: https://lkml.kernel.org/r/20210203223328.558945-1-ira.weiny@intel.com Signed-off-by: Ira Weiny <ira.weiny@intel.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/coredump.c')
-rw-r--r--fs/coredump.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/coredump.c b/fs/coredump.c
index ae778937a1ff..1c0fdc1aa70b 100644
--- a/fs/coredump.c
+++ b/fs/coredump.c
@@ -897,10 +897,10 @@ 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);