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From:   ira.weiny@intel.com
To:     Andrew Morton <akpm@linux-foundation.org>,
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        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
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Cc:     Ira Weiny <ira.weiny@intel.com>, Jan Kara <jack@suse.com>,
        x86@kernel.org, Dave Hansen <dave.hansen@linux.intel.com>,
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Subject: [PATCH RFC PKS/PMEM 37/58] fs/ext2: Utilize new kmap_thread()
Date:   Fri,  9 Oct 2020 12:50:12 -0700
Message-Id: <20201009195033.3208459-38-ira.weiny@intel.com>
In-Reply-To: <20201009195033.3208459-1-ira.weiny@intel.com>
References: <20201009195033.3208459-1-ira.weiny@intel.com>
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From: Ira Weiny <ira.weiny@intel.com>

These kmap() calls are localized to a single thread.  To avoid the over
head of global PKRS update use the new kmap_thread() call instead.

Cc: Jan Kara <jack@suse.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
---
 fs/ext2/dir.c  | 2 +-
 fs/ext2/ext2.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/ext2/dir.c b/fs/ext2/dir.c
index f3194bf20733..abe97ba458c8 100644
--- a/fs/ext2/dir.c
+++ b/fs/ext2/dir.c
@@ -196,7 +196,7 @@ static struct page * ext2_get_page(struct inode *dir, unsigned long n,
 	struct address_space *mapping = dir->i_mapping;
 	struct page *page = read_mapping_page(mapping, n, NULL);
 	if (!IS_ERR(page)) {
-		kmap(page);
+		kmap_thread(page);
 		if (unlikely(!PageChecked(page))) {
 			if (PageError(page) || !ext2_check_page(page, quiet))
 				goto fail;
diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h
index 021ec8b42ac3..9bcb6714c255 100644
--- a/fs/ext2/ext2.h
+++ b/fs/ext2/ext2.h
@@ -749,7 +749,7 @@ extern struct ext2_dir_entry_2 * ext2_dotdot (struct inode *, struct page **);
 extern void ext2_set_link(struct inode *, struct ext2_dir_entry_2 *, struct page *, struct inode *, int);
 static inline void ext2_put_page(struct page *page)
 {
-	kunmap(page);
+	kunmap_thread(page);
 	put_page(page);
 }
 
-- 
2.28.0.rc0.12.gb6a658bd00c9