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Date: Tue, 28 Jan 2014 14:54:04 +0900
From: Jaegeuk Kim <jaegeuk.kim@...sung.com>
To: unlisted-recipients:; (no To-header on input)
Cc: Jaegeuk Kim <jaegeuk.kim@...sung.com>,
linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-f2fs-devel@...ts.sourceforge.net
Subject: [PATCH 1/4] f2fs: update_inode_page should be done all the time
In order to make fs consistency, update_inode_page should not be failed all
the time. Otherwise, it is possible to lose some metadata in the inode like
a link count.
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@...sung.com>
---
fs/f2fs/data.c | 3 +--
fs/f2fs/f2fs.h | 8 +++++++-
fs/f2fs/inode.c | 20 ++++++++++++--------
3 files changed, 20 insertions(+), 11 deletions(-)
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 0ae5587..6827359 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -62,8 +62,7 @@ static void f2fs_write_end_io(struct bio *bio, int err)
if (unlikely(!uptodate)) {
SetPageError(page);
set_bit(AS_EIO, &page->mapping->flags);
- set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
- sbi->sb->s_flags |= MS_RDONLY;
+ f2fs_stop_checkpoint(sbi);
}
end_page_writeback(page);
dec_page_count(sbi, F2FS_WRITEBACK);
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index af51a0b..42903c3 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1023,6 +1023,12 @@ static inline int f2fs_readonly(struct super_block *sb)
return sb->s_flags & MS_RDONLY;
}
+static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi)
+{
+ set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
+ sbi->sb->s_flags |= MS_RDONLY;
+}
+
/*
* file.c
*/
@@ -1044,7 +1050,7 @@ void f2fs_set_inode_flags(struct inode *);
struct inode *f2fs_iget(struct super_block *, unsigned long);
int try_to_free_nats(struct f2fs_sb_info *, int);
void update_inode(struct inode *, struct page *);
-int update_inode_page(struct inode *);
+void update_inode_page(struct inode *);
int f2fs_write_inode(struct inode *, struct writeback_control *);
void f2fs_evict_inode(struct inode *);
diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c
index 4d67ed7..1a4ba27 100644
--- a/fs/f2fs/inode.c
+++ b/fs/f2fs/inode.c
@@ -212,24 +212,28 @@ void update_inode(struct inode *inode, struct page *node_page)
clear_inode_flag(F2FS_I(inode), FI_DIRTY_INODE);
}
-int update_inode_page(struct inode *inode)
+void update_inode_page(struct inode *inode)
{
struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
struct page *node_page;
-
+retry:
node_page = get_node_page(sbi, inode->i_ino);
- if (IS_ERR(node_page))
- return PTR_ERR(node_page);
+ if (IS_ERR(node_page)) {
+ if (PTR_ERR(node_page) == -ENOMEM) {
+ cond_resched();
+ goto retry;
+ } else {
+ f2fs_stop_checkpoint(sbi);
+ }
+ }
update_inode(inode, node_page);
f2fs_put_page(node_page, 1);
- return 0;
}
int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
{
struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
- int ret;
if (inode->i_ino == F2FS_NODE_INO(sbi) ||
inode->i_ino == F2FS_META_INO(sbi))
@@ -243,13 +247,13 @@ int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
* during the urgent cleaning time when runing out of free sections.
*/
f2fs_lock_op(sbi);
- ret = update_inode_page(inode);
+ update_inode_page(inode);
f2fs_unlock_op(sbi);
if (wbc)
f2fs_balance_fs(sbi);
- return ret;
+ return 0;
}
/*
--
1.8.4.474.g128a96c
--
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