[RFC,PKS/PMEM,30/58] fs/romfs: Utilize new kmap_thread()

Commit Message

Ira Weiny Oct. 9, 2020, 7:50 p.m. UTC

From: Ira Weiny <[e-mail]>

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.

Signed-off-by: Ira Weiny <[e-mail]>
---
 fs/romfs/super.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Patch

diff --git a/fs/romfs/super.c b/fs/romfs/super.c
index e582d001f792..9050074c6755 100644
--- a/fs/romfs/super.c
+++ b/fs/romfs/super.c
@@ -107,7 +107,7 @@  static int romfs_readpage(struct file *file, struct page *page)
 	void *buf;
 	int ret;
 
-	buf = kmap(page);
+	buf = kmap_thread(page);
 	if (!buf)
 		return -ENOMEM;
 
@@ -136,7 +136,7 @@  static int romfs_readpage(struct file *file, struct page *page)
 		SetPageUptodate(page);
 
 	flush_dcache_page(page);
-	kunmap(page);
+	kunmap_thread(page);
 	unlock_page(page);
 	return ret;
 }