Messages in this thread Patch in this message | | | From | Chao Yu <> | Subject | [PATCH] f2fs: allow writeback on error status filesystem | Date | Fri, 5 Jun 2020 16:54:53 +0800 |
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71.07% 0.01% kworker/u256:1+ [kernel.kallsyms] [k] wb_writeback | --71.06%--wb_writeback | |--68.96%--__writeback_inodes_wb | | | --68.95%--writeback_sb_inodes | | | |--65.08%--__writeback_single_inode | | | | | --64.35%--do_writepages | | | | | |--59.83%--f2fs_write_node_pages | | | | | | | --59.74%--f2fs_sync_node_pages | | | | | | | |--27.91%--pagevec_lookup_range_tag | | | | | | | | | --27.90%--find_get_pages_range_tag
If filesystem was injected w/ checkpoint errror, before umount, kworker will always hold one core in order to writeback a large number of node pages, that looks not reasonable, to avoid that, we can allow data/node write in such case, since we can force all data/node writes with OPU mode, and clear recovery flag on node, and checkpoint is not allowed as well, so we don't need to worry about writeback's effect on data/node in previous checkpoint, then with this way, it can decrease memory footprint cost by node/data pages and avoid looping into data/node writeback process.
Signed-off-by: Chao Yu <yuchao0@huawei.com> --- fs/f2fs/data.c | 19 ++++++++++++------- fs/f2fs/node.c | 7 +++++-- 2 files changed, 17 insertions(+), 9 deletions(-)
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 9d40db50cd65..2b3c846181bb 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -2519,6 +2519,8 @@ bool f2fs_should_update_outplace(struct inode *inode, struct f2fs_io_info *fio) { struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + if (unlikely(f2fs_cp_error(sbi))) + return true; if (f2fs_lfs_mode(sbi)) return true; if (S_ISDIR(inode->i_mode)) @@ -2702,13 +2704,16 @@ int f2fs_write_single_data_page(struct page *page, int *submitted, /* we should bypass data pages to proceed the kworkder jobs */ if (unlikely(f2fs_cp_error(sbi))) { mapping_set_error(page->mapping, -EIO); - /* - * don't drop any dirty dentry pages for keeping lastest - * directory structure. - */ - if (S_ISDIR(inode->i_mode)) - goto redirty_out; - goto out; + + if (has_not_enough_free_secs(sbi, 0, 0)) { + /* + * don't drop any dirty dentry pages for keeping lastest + * directory structure. + */ + if (S_ISDIR(inode->i_mode)) + goto redirty_out; + goto out; + } } if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index 03e24df1c84f..372c04efad38 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -1527,7 +1527,10 @@ static int __write_node_page(struct page *page, bool atomic, bool *submitted, unlock_page(page); return 0; } - goto redirty_out; + if (has_not_enough_free_secs(sbi, 0, 0)) + goto redirty_out; + set_fsync_mark(page, 0); + set_dentry_mark(page, 0); } if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) @@ -1568,7 +1571,7 @@ static int __write_node_page(struct page *page, bool atomic, bool *submitted, goto redirty_out; } - if (atomic && !test_opt(sbi, NOBARRIER)) + if (atomic && !test_opt(sbi, NOBARRIER) && !f2fs_cp_error(sbi)) fio.op_flags |= REQ_PREFLUSH | REQ_FUA; /* should add to global list before clearing PAGECACHE status */ -- 2.18.0.rc1
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