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Message-Id: <20160706160632.78272-1-jaegeuk@kernel.org>
Date: Wed, 6 Jul 2016 09:06:27 -0700
From: Jaegeuk Kim <jaegeuk@...nel.org>
To: linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
linux-f2fs-devel@...ts.sourceforge.net
Cc: Jaegeuk Kim <jaegeuk@...nel.org>
Subject: [PATCH 1/6] f2fs: introduce f2fs_set_page_dirty_nobuffer
This patch adds f2fs_set_page_dirty_nobuffer() copied from __set_page_dirty_buffer.
When appending 4KB blocks in f2fs on pmem with multiple cores, this improves the
overall performance.
Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
---
fs/f2fs/checkpoint.c | 2 +-
fs/f2fs/data.c | 33 ++++++++++++++++++++++++++++++++-
fs/f2fs/f2fs.h | 1 +
fs/f2fs/node.c | 2 +-
4 files changed, 35 insertions(+), 3 deletions(-)
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 2b43d40..2755ef7 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -366,7 +366,7 @@ static int f2fs_set_meta_page_dirty(struct page *page)
SetPageUptodate(page);
if (!PageDirty(page)) {
- __set_page_dirty_nobuffers(page);
+ f2fs_set_page_dirty_nobuffers(page);
inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_META);
SetPagePrivate(page);
f2fs_trace_pid(page);
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 3d93cf1..4a2e97d 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -19,6 +19,8 @@
#include <linux/bio.h>
#include <linux/prefetch.h>
#include <linux/uio.h>
+#include <linux/mm.h>
+#include <linux/memcontrol.h>
#include <linux/cleancache.h>
#include "f2fs.h"
@@ -1775,6 +1777,35 @@ int f2fs_release_page(struct page *page, gfp_t wait)
return 1;
}
+/*
+ * This was copied from __set_page_dirty_buffers which gives higher performance
+ * in very high speed storages. (e.g., pmem)
+ */
+void f2fs_set_page_dirty_nobuffers(struct page *page)
+{
+ struct address_space *mapping = page->mapping;
+ unsigned long flags;
+
+ if (unlikely(!mapping))
+ return;
+
+ spin_lock(&mapping->private_lock);
+ lock_page_memcg(page);
+ SetPageDirty(page);
+ spin_unlock(&mapping->private_lock);
+
+ spin_lock_irqsave(&mapping->tree_lock, flags);
+ WARN_ON_ONCE(!PageUptodate(page));
+ account_page_dirtied(page, mapping);
+ radix_tree_tag_set(&mapping->page_tree,
+ page_index(page), PAGECACHE_TAG_DIRTY);
+ spin_unlock_irqrestore(&mapping->tree_lock, flags);
+ unlock_page_memcg(page);
+
+ __mark_inode_dirty(mapping->host, I_DIRTY_PAGES);
+ return;
+}
+
static int f2fs_set_data_page_dirty(struct page *page)
{
struct address_space *mapping = page->mapping;
@@ -1797,7 +1828,7 @@ static int f2fs_set_data_page_dirty(struct page *page)
}
if (!PageDirty(page)) {
- __set_page_dirty_nobuffers(page);
+ f2fs_set_page_dirty_nobuffers(page);
update_dirty_page(inode, page);
return 1;
}
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index bd82b6d..a05f65b 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -2097,6 +2097,7 @@ struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
int do_write_data_page(struct f2fs_io_info *);
int f2fs_map_blocks(struct inode *, struct f2fs_map_blocks *, int, int);
int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
+void f2fs_set_page_dirty_nobuffers(struct page *);
void f2fs_invalidate_page(struct page *, unsigned int, unsigned int);
int f2fs_release_page(struct page *, gfp_t);
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 69171ce..db73f3c 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1646,7 +1646,7 @@ static int f2fs_set_node_page_dirty(struct page *page)
SetPageUptodate(page);
if (!PageDirty(page)) {
- __set_page_dirty_nobuffers(page);
+ f2fs_set_page_dirty_nobuffers(page);
inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES);
SetPagePrivate(page);
f2fs_trace_pid(page);
--
2.8.3
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