f2fs: add logs in f2fs_disable_checkpoint()

In order to troubleshoot in which step we may block on during
mount w/ checkpoint_disable mount option.

Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index f4ab39b24a304f04c7c89cee611f7b7db607ad09..629548d78db04b1fc761d630d5abf1956cdf6f49 100644 (file)
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -2633,6 +2633,9 @@ static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
 
        /* check if we need more GC first */
        unusable = f2fs_get_unusable_blocks(sbi);
+
+       f2fs_info(sbi, "%s starts, unusable: %u", __func__, unusable);
+
        if (!f2fs_disable_cp_again(sbi, unusable))
                goto skip_gc;
 
@@ -2640,6 +2643,8 @@ static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
 
        sbi->gc_mode = GC_URGENT_HIGH;
 
+       f2fs_info(sbi, "%s: run f2fs_gc() to migrate blocks", __func__);
+
        while (!f2fs_time_over(sbi, DISABLE_TIME)) {
                struct f2fs_gc_control gc_control = {
                        .victim_segno = NULL_SEGNO,
@@ -2660,6 +2665,12 @@ static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
                        break;
        }
 
+       f2fs_info(sbi, "%s: call sync_filesystem() to persist meta: %lld, node: %lld, data: %lld",
+                       __func__,
+                       get_pages(sbi, F2FS_DIRTY_META),
+                       get_pages(sbi, F2FS_DIRTY_NODES),
+                       get_pages(sbi, F2FS_DIRTY_DATA));
+
        ret = sync_filesystem(sbi->sb);
        if (ret || err) {
                err = ret ? ret : err;
@@ -2673,6 +2684,12 @@ static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
        }
 
 skip_gc:
+       f2fs_info(sbi, "%s: call f2fs_write_checkpoint(), meta: %lld, node: %lld, data: %lld",
+                       __func__,
+                       get_pages(sbi, F2FS_DIRTY_META),
+                       get_pages(sbi, F2FS_DIRTY_NODES),
+                       get_pages(sbi, F2FS_DIRTY_DATA));
+
        f2fs_down_write_trace(&sbi->gc_lock, &lc);
        cpc.reason = CP_PAUSE;
        set_sbi_flag(sbi, SBI_CP_DISABLED);
@@ -2690,7 +2707,7 @@ out_unlock:
 restore_flag:
        sbi->gc_mode = gc_mode;
        sbi->sb->s_flags = s_flags;     /* Restore SB_RDONLY status */
-       f2fs_info(sbi, "f2fs_disable_checkpoint() finish, err:%d", err);
+       f2fs_info(sbi, "%s finishes, err:%d", __func__, err);
        return err;
 }