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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2017-07-14 21:45:21 +0300 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2017-07-18 05:23:18 +0300 |
| commit | 4db08d016ccedb5b97869724a096990acad59685 (patch) | |
| tree | efa6e133e0a0f181fd36118b8aad1bd0b37dc58c | |
| parent | 299aa41a45fe21977532fbf992e4f7c5eef73bf0 (diff) | |
| download | linux-4db08d016ccedb5b97869724a096990acad59685.tar.xz | |
f2fs: avoid cpu lockup
Before retrying to flush data or dentry pages, we need to release cpu in order
to prevent watchdog.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
| -rw-r--r-- | fs/f2fs/checkpoint.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index 56bbf592e487..5b876f6d3f6b 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -879,6 +879,7 @@ int sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type) struct inode *inode; struct f2fs_inode_info *fi; bool is_dir = (type == DIR_INODE); + unsigned long ino = 0; trace_f2fs_sync_dirty_inodes_enter(sbi->sb, is_dir, get_pages(sbi, is_dir ? @@ -901,8 +902,17 @@ retry: inode = igrab(&fi->vfs_inode); spin_unlock(&sbi->inode_lock[type]); if (inode) { + unsigned long cur_ino = inode->i_ino; + filemap_fdatawrite(inode->i_mapping); iput(inode); + /* We need to give cpu to another writers. */ + if (ino == cur_ino) { + congestion_wait(BLK_RW_ASYNC, HZ/50); + cond_resched(); + } else { + ino = cur_ino; + } } else { /* * We should submit bio, since it exists several |