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| author |   Chao Yu <yuchao0@huawei.com> | 2018-12-12 18:12:30 +0800 |
|---|---|---|
| committer |   Jaegeuk Kim <jaegeuk@kernel.org> | 2018-12-14 06:38:36 -0800 |
| commit | 8d64d365aed355b2e2465d19ba61df02462fff4d (patch) | |
| tree | 7b3924ab7ba6f9d0a71f8085443c62b7f57e1ce2 /fs/f2fs | |
| parent | f2fs: clear PG_writeback if IPU failed (diff) | |
| download | wireguard-linux-8d64d365aed355b2e2465d19ba61df02462fff4d.tar.xz wireguard-linux-8d64d365aed355b2e2465d19ba61df02462fff4d.zip | |
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.c | 7 | ||||
| -rw-r--r-- | fs/f2fs/gc.c | 5 | ||||
| -rw-r--r-- | fs/f2fs/node.c | 5 | ||||
| -rw-r--r-- | fs/f2fs/segment.c | 3 |
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); |