On 2017/7/16 9:04, Jaegeuk Kim wrote: > Before retrying to flush data or dentry pages, we need to release cpu in order > to prevent watchdog. > > Signed-off-by: Jaegeuk Kim <[email protected]>
Reviewed-by: Chao Yu <[email protected]> > --- > Change log from v1: > - timeout more specifically > > fs/f2fs/checkpoint.c | 10 ++++++++++ > 1 file changed, 10 insertions(+) > > 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 @@ int sync_dirty_inodes(struct f2fs_sb_info *sbi, enum > inode_type type) > 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) { We failed to flush dirty pages of inode due to encountering -EAGAIN of writepage? Thanks, > + congestion_wait(BLK_RW_ASYNC, HZ/50); > + cond_resched(); > + } else { > + ino = cur_ino; > + } > } else { > /* > * We should submit bio, since it exists several > ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Linux-f2fs-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
