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| author | Ira Weiny <ira.weiny@intel.com> | 2021-02-25 17:22:22 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-02-26 09:41:05 -0800 |
| commit | 3159ed57792be7453793bda27297a423e1c63d6c (patch) | |
| tree | 774aa3530d912f7c900e396ed4d36049cfdfc508 /fs/coredump.c | |
| parent | f9c8bc4604c95a7c55293f244f67753f6e96096f (diff) | |
| download | linux-3159ed57792be7453793bda27297a423e1c63d6c.tar.gz linux-3159ed57792be7453793bda27297a423e1c63d6c.tar.bz2 linux-3159ed57792be7453793bda27297a423e1c63d6c.zip | |
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.c | 4 |
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); |