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authorJaegeuk Kim <jaegeuk@kernel.org>2018-07-12 03:30:42 +0200
committerJaegeuk Kim <jaegeuk@kernel.org>2018-07-27 11:03:39 +0200
commitaf697c0f5c5b8798832e651baf23460d588393de (patch)
tree5212f3769a78857e82c75c2a26f4c389f50b803d /fs/f2fs/checkpoint.c
parentf2fs: do checkpoint in kill_sb (diff)
downloadlinux-af697c0f5c5b8798832e651baf23460d588393de.tar.xz
linux-af697c0f5c5b8798832e651baf23460d588393de.zip
f2fs: keep meta pages in cp_error state
It turns out losing meta pages in shutdown period makes f2fs very unstable so that I could see many unexpected error conditions. Let's keep meta pages for fault injection and sudden power-off tests. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/checkpoint.c')
-rw-r--r--fs/f2fs/checkpoint.c28
1 files changed, 13 insertions, 15 deletions
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 9f1c96caebda..fe92d2372f4a 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -242,11 +242,8 @@ static int __f2fs_write_meta_page(struct page *page,
trace_f2fs_writepage(page, META);
- if (unlikely(f2fs_cp_error(sbi))) {
- dec_page_count(sbi, F2FS_DIRTY_META);
- unlock_page(page);
- return 0;
- }
+ if (unlikely(f2fs_cp_error(sbi)))
+ goto redirty_out;
if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
goto redirty_out;
if (wbc->for_reclaim && page->index < GET_SUM_BLOCK(sbi, 0))
@@ -1129,6 +1126,9 @@ static void wait_on_all_pages_writeback(struct f2fs_sb_info *sbi)
if (!get_pages(sbi, F2FS_WB_CP_DATA))
break;
+ if (unlikely(f2fs_cp_error(sbi)))
+ break;
+
io_schedule_timeout(5*HZ);
}
finish_wait(&sbi->cp_wait, &wait);
@@ -1202,8 +1202,12 @@ static void commit_checkpoint(struct f2fs_sb_info *sbi,
/* writeout cp pack 2 page */
err = __f2fs_write_meta_page(page, &wbc, FS_CP_META_IO);
- f2fs_bug_on(sbi, err);
+ if (unlikely(err && f2fs_cp_error(sbi))) {
+ f2fs_put_page(page, 1);
+ return;
+ }
+ f2fs_bug_on(sbi, err);
f2fs_put_page(page, 0);
/* submit checkpoint (with barrier if NOBARRIER is not set) */
@@ -1229,7 +1233,7 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
while (get_pages(sbi, F2FS_DIRTY_META)) {
f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO);
if (unlikely(f2fs_cp_error(sbi)))
- return -EIO;
+ break;
}
/*
@@ -1309,7 +1313,7 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
f2fs_sync_meta_pages(sbi, META, LONG_MAX,
FS_CP_META_IO);
if (unlikely(f2fs_cp_error(sbi)))
- return -EIO;
+ break;
}
}
@@ -1350,9 +1354,6 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
/* wait for previous submitted meta pages writeback */
wait_on_all_pages_writeback(sbi);
- if (unlikely(f2fs_cp_error(sbi)))
- return -EIO;
-
/* flush all device cache */
err = f2fs_flush_device_cache(sbi);
if (err)
@@ -1364,9 +1365,6 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
f2fs_release_ino_entry(sbi, false);
- if (unlikely(f2fs_cp_error(sbi)))
- return -EIO;
-
clear_sbi_flag(sbi, SBI_IS_DIRTY);
clear_sbi_flag(sbi, SBI_NEED_CP);
__set_cp_next_pack(sbi);
@@ -1381,7 +1379,7 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
f2fs_bug_on(sbi, get_pages(sbi, F2FS_DIRTY_DENTS));
- return 0;
+ return unlikely(f2fs_cp_error(sbi)) ? -EIO : 0;
}
/*