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Date: Mon, 25 Apr 2016 17:06:56 -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 3/7] f2fs: split sync_node_pages with fsync_node_pages
This patch splits the existing sync_node_pages into (f)sync_node_pages.
The fsync_node_pages is used for f2fs_sync_file only.
Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
---
fs/f2fs/checkpoint.c | 2 +-
fs/f2fs/f2fs.h | 3 +-
fs/f2fs/file.c | 2 +-
fs/f2fs/gc.c | 2 +-
fs/f2fs/node.c | 108 +++++++++++++++++++++++++++++++++++++--------------
5 files changed, 84 insertions(+), 33 deletions(-)
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index b92782f..bf040b5 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -892,7 +892,7 @@ retry_flush_nodes:
if (get_pages(sbi, F2FS_DIRTY_NODES)) {
up_write(&sbi->node_write);
- err = sync_node_pages(sbi, 0, &wbc);
+ err = sync_node_pages(sbi, &wbc);
if (err) {
f2fs_unlock_all(sbi);
goto out;
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 3f15513..269abe5 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1784,7 +1784,8 @@ void ra_node_page(struct f2fs_sb_info *, nid_t);
struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
struct page *get_node_page_ra(struct page *, int);
void sync_inode_page(struct dnode_of_data *);
-int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
+int fsync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
+int sync_node_pages(struct f2fs_sb_info *, struct writeback_control *);
bool alloc_nid(struct f2fs_sb_info *, nid_t *);
void alloc_nid_done(struct f2fs_sb_info *, nid_t);
void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 7de90e6..3d53ee0 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -256,7 +256,7 @@ go_write:
goto out;
}
sync_nodes:
- sync_node_pages(sbi, ino, &wbc);
+ fsync_node_pages(sbi, ino, &wbc);
/* if cp_error was enabled, we should avoid infinite loop */
if (unlikely(f2fs_cp_error(sbi))) {
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index b0051a9..e820465 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -841,7 +841,7 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi,
.nr_to_write = LONG_MAX,
.for_reclaim = 0,
};
- sync_node_pages(sbi, 0, &wbc);
+ sync_node_pages(sbi, &wbc);
} else {
f2fs_submit_merged_bio(sbi, DATA, WRITE);
}
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index cccee50..675b730 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1222,12 +1222,84 @@ iput_out:
iput(inode);
}
-int sync_node_pages(struct f2fs_sb_info *sbi, nid_t ino,
+int fsync_node_pages(struct f2fs_sb_info *sbi, nid_t ino,
struct writeback_control *wbc)
{
pgoff_t index, end;
struct pagevec pvec;
- int step = ino ? 2 : 0;
+ int nwritten = 0;
+
+ pagevec_init(&pvec, 0);
+ index = 0;
+ end = ULONG_MAX;
+
+ while (index <= end) {
+ int i, nr_pages;
+ nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index,
+ PAGECACHE_TAG_DIRTY,
+ min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1);
+ if (nr_pages == 0)
+ break;
+
+ for (i = 0; i < nr_pages; i++) {
+ struct page *page = pvec.pages[i];
+
+ if (unlikely(f2fs_cp_error(sbi))) {
+ pagevec_release(&pvec);
+ return -EIO;
+ }
+
+ if (!IS_DNODE(page) || !is_cold_node(page))
+ continue;
+ if (ino_of_node(page) != ino)
+ continue;
+
+ lock_page(page);
+
+ if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
+continue_unlock:
+ unlock_page(page);
+ continue;
+ }
+ if (ino_of_node(page) != ino)
+ goto continue_unlock;
+
+ if (!PageDirty(page)) {
+ /* someone wrote it for us */
+ goto continue_unlock;
+ }
+
+ f2fs_wait_on_page_writeback(page, NODE, true);
+ BUG_ON(PageWriteback(page));
+ if (!clear_page_dirty_for_io(page))
+ goto continue_unlock;
+
+ set_fsync_mark(page, 1);
+ if (IS_INODE(page))
+ set_dentry_mark(page,
+ need_dentry_mark(sbi, ino));
+ nwritten++;
+
+ if (NODE_MAPPING(sbi)->a_ops->writepage(page, wbc))
+ unlock_page(page);
+
+ if (--wbc->nr_to_write == 0)
+ break;
+ }
+ pagevec_release(&pvec);
+ cond_resched();
+
+ if (wbc->nr_to_write == 0)
+ break;
+ }
+ return nwritten;
+}
+
+int sync_node_pages(struct f2fs_sb_info *sbi, struct writeback_control *wbc)
+{
+ pgoff_t index, end;
+ struct pagevec pvec;
+ int step = 0;
int nwritten = 0;
pagevec_init(&pvec, 0);
@@ -1266,28 +1338,15 @@ next_step:
if (step == 2 && (!IS_DNODE(page) ||
!is_cold_node(page)))
continue;
-
- /*
- * If an fsync mode,
- * we should not skip writing node pages.
- */
lock_node:
- if (ino) {
- if (ino_of_node(page) == ino)
- lock_page(page);
- else
- continue;
- } else if (!trylock_page(page)) {
+ if (!trylock_page(page))
continue;
- }
if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
continue_unlock:
unlock_page(page);
continue;
}
- if (ino && ino_of_node(page) != ino)
- goto continue_unlock;
if (!PageDirty(page)) {
/* someone wrote it for us */
@@ -1295,7 +1354,7 @@ continue_unlock:
}
/* flush inline_data */
- if (!ino && is_inline_node(page)) {
+ if (is_inline_node(page)) {
clear_inline_node(page);
unlock_page(page);
flush_inline_data(sbi, ino_of_node(page));
@@ -1308,17 +1367,8 @@ continue_unlock:
if (!clear_page_dirty_for_io(page))
goto continue_unlock;
- /* called by fsync() */
- if (ino && IS_DNODE(page)) {
- set_fsync_mark(page, 1);
- if (IS_INODE(page))
- set_dentry_mark(page,
- need_dentry_mark(sbi, ino));
- nwritten++;
- } else {
- set_fsync_mark(page, 0);
- set_dentry_mark(page, 0);
- }
+ set_fsync_mark(page, 0);
+ set_dentry_mark(page, 0);
if (NODE_MAPPING(sbi)->a_ops->writepage(page, wbc))
unlock_page(page);
@@ -1466,7 +1516,7 @@ static int f2fs_write_node_pages(struct address_space *mapping,
diff = nr_pages_to_write(sbi, NODE, wbc);
wbc->sync_mode = WB_SYNC_NONE;
- sync_node_pages(sbi, 0, wbc);
+ sync_node_pages(sbi, wbc);
wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff);
return 0;
--
2.6.3
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