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authorChao Yu <yuchao0@huawei.com>2018-12-12 18:12:30 +0800
committerJaegeuk Kim <jaegeuk@kernel.org>2018-12-14 06:38:36 -0800
commit8d64d365aed355b2e2465d19ba61df02462fff4d (patch)
tree7b3924ab7ba6f9d0a71f8085443c62b7f57e1ce2 /fs/f2fs
parent2062e0c3daa0bcfc806f4f7331f8bba16dd42632 (diff)
downloadlinux-8d64d365aed355b2e2465d19ba61df02462fff4d.tar.bz2
f2fs: fix to reorder set_page_dirty and wait_on_page_writeback
This patch reorders flow from - update page - set_page_dirty - wait_on_page_writeback to - wait_on_page_writeback - update page - set_page_dirty The reason is: - set_page_dirty will increase reference of dirty page, the reference should be cleared before wait_on_page_writeback to keep its consistency. - some devices need stable page during page writebacking, so we should not change page's data. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs')
-rw-r--r--fs/f2fs/checkpoint.c7
-rw-r--r--fs/f2fs/gc.c5
-rw-r--r--fs/f2fs/node.c5
-rw-r--r--fs/f2fs/segment.c3
4 files changed, 12 insertions, 8 deletions
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 3a25cf22d732..4f02461f348c 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -1290,11 +1290,12 @@ static void commit_checkpoint(struct f2fs_sb_info *sbi,
struct page *page = f2fs_grab_meta_page(sbi, blk_addr);
int err;
- memcpy(page_address(page), src, PAGE_SIZE);
- set_page_dirty(page);
-
f2fs_wait_on_page_writeback(page, META, true);
f2fs_bug_on(sbi, PageWriteback(page));
+
+ memcpy(page_address(page), src, PAGE_SIZE);
+
+ set_page_dirty(page);
if (unlikely(!clear_page_dirty_for_io(page)))
f2fs_bug_on(sbi, 1);
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 71462f2e47d4..666518eb7293 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -829,8 +829,8 @@ static int move_data_block(struct inode *inode, block_t bidx,
}
write_page:
- set_page_dirty(fio.encrypted_page);
f2fs_wait_on_page_writeback(fio.encrypted_page, DATA, true);
+ set_page_dirty(fio.encrypted_page);
if (clear_page_dirty_for_io(fio.encrypted_page))
dec_page_count(fio.sbi, F2FS_DIRTY_META);
@@ -924,8 +924,9 @@ static int move_data_page(struct inode *inode, block_t bidx, int gc_type,
bool is_dirty = PageDirty(page);
retry:
- set_page_dirty(page);
f2fs_wait_on_page_writeback(page, DATA, true);
+
+ set_page_dirty(page);
if (clear_page_dirty_for_io(page)) {
inode_dec_dirty_pages(inode);
f2fs_remove_dirty_inode(inode);
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index a2273340991f..c09df777f66f 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1598,10 +1598,11 @@ int f2fs_move_node_page(struct page *node_page, int gc_type)
.for_reclaim = 0,
};
- set_page_dirty(node_page);
f2fs_wait_on_page_writeback(node_page, NODE, true);
-
f2fs_bug_on(F2FS_P_SB(node_page), PageWriteback(node_page));
+
+ set_page_dirty(node_page);
+
if (!clear_page_dirty_for_io(node_page)) {
err = -EAGAIN;
goto out_page;
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 204d31e58967..e2e971e89b2d 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -387,8 +387,9 @@ static int __f2fs_commit_inmem_pages(struct inode *inode)
if (page->mapping == inode->i_mapping) {
trace_f2fs_commit_inmem_page(page, INMEM);
- set_page_dirty(page);
f2fs_wait_on_page_writeback(page, DATA, true);
+
+ set_page_dirty(page);
if (clear_page_dirty_for_io(page)) {
inode_dec_dirty_pages(inode);
f2fs_remove_dirty_inode(inode);