From: Ira Weiny ira.weiny@intel.com
The kmap() calls in this FS are localized to a single thread. To avoid the over head of global PKRS updates use the new kmap_thread() call.
Cc: David Howells dhowells@redhat.com Signed-off-by: Ira Weiny ira.weiny@intel.com --- fs/cachefiles/rdwr.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/cachefiles/rdwr.c b/fs/cachefiles/rdwr.c index 3080cda9e824..2468e5c067ba 100644 --- a/fs/cachefiles/rdwr.c +++ b/fs/cachefiles/rdwr.c @@ -936,9 +936,9 @@ int cachefiles_write_page(struct fscache_storage *op, struct page *page) } }
- data = kmap(page); + data = kmap_thread(page); ret = kernel_write(file, data, len, &pos); - kunmap(page); + kunmap_thread(page); fput(file); if (ret != len) goto error_eio;