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authorDaeho Jeong <daeho.jeong@samsung.com>2017-09-11 16:30:28 +0900
committerJaegeuk Kim <jaegeuk@kernel.org>2017-09-11 21:32:38 -0700
commit0abd8e70d24b665dd00972d4a259e05528cbf4c6 (patch)
tree9c0f4ff0c0c5569a562e4baba5bcd2ea8489a2be /fs
parentb3a97a2a9a7b2d50bcf13d32857cd6f5695c6b65 (diff)
downloadop-kernel-dev-0abd8e70d24b665dd00972d4a259e05528cbf4c6.zip
op-kernel-dev-0abd8e70d24b665dd00972d4a259e05528cbf4c6.tar.gz
f2fs: clear radix tree dirty tag of pages whose dirty flag is cleared
On a senario like writing out the first dirty page of the inode as the inline data, we only cleared dirty flags of the pages, but didn't clear the dirty tags of those pages in the radix tree. If we don't clear the dirty tags of the pages in the radix tree, the inodes which contain the pages will be marked with I_DIRTY_PAGES again and again, and writepages() for the inodes will be invoked in every writeback period. As a result, nothing will be done in every writepages() for the inodes and it will just consume CPU time meaninglessly. Signed-off-by: Daeho Jeong <daeho.jeong@samsung.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs')
-rw-r--r--fs/f2fs/dir.c7
-rw-r--r--fs/f2fs/inline.c7
2 files changed, 14 insertions, 0 deletions
diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c
index 37f9c7f..c0c933ad 100644
--- a/fs/f2fs/dir.c
+++ b/fs/f2fs/dir.c
@@ -705,6 +705,8 @@ void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page,
struct f2fs_dentry_block *dentry_blk;
unsigned int bit_pos;
int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len));
+ struct address_space *mapping = page_mapping(page);
+ unsigned long flags;
int i;
f2fs_update_time(F2FS_I_SB(dir), REQ_TIME);
@@ -735,6 +737,11 @@ void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page,
if (bit_pos == NR_DENTRY_IN_BLOCK &&
!truncate_hole(dir, page->index, page->index + 1)) {
+ spin_lock_irqsave(&mapping->tree_lock, flags);
+ radix_tree_tag_clear(&mapping->page_tree, page_index(page),
+ PAGECACHE_TAG_DIRTY);
+ spin_unlock_irqrestore(&mapping->tree_lock, flags);
+
clear_page_dirty_for_io(page);
ClearPagePrivate(page);
ClearPageUptodate(page);
diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c
index c133a4f..8322e4e 100644
--- a/fs/f2fs/inline.c
+++ b/fs/f2fs/inline.c
@@ -202,6 +202,8 @@ int f2fs_write_inline_data(struct inode *inode, struct page *page)
{
void *src_addr, *dst_addr;
struct dnode_of_data dn;
+ struct address_space *mapping = page_mapping(page);
+ unsigned long flags;
int err;
set_new_dnode(&dn, inode, NULL, NULL, 0);
@@ -223,6 +225,11 @@ int f2fs_write_inline_data(struct inode *inode, struct page *page)
kunmap_atomic(src_addr);
set_page_dirty(dn.inode_page);
+ spin_lock_irqsave(&mapping->tree_lock, flags);
+ radix_tree_tag_clear(&mapping->page_tree, page_index(page),
+ PAGECACHE_TAG_DIRTY);
+ spin_unlock_irqrestore(&mapping->tree_lock, flags);
+
set_inode_flag(inode, FI_APPEND_WRITE);
set_inode_flag(inode, FI_DATA_EXIST);
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