From db610a640eeeb268c36a4558414f28e1c269433e Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Thu, 24 Jan 2019 17:48:38 -0800 Subject: [PATCH] f2fs: add quick mode of checkpoint=disable for QA This mode returns mount() quickly with EAGAIN. We can trigger this by shutdown(F2FS_GOING_DOWN_NEED_FSCK). Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/checkpoint.c | 5 +++++ fs/f2fs/f2fs.h | 2 ++ fs/f2fs/file.c | 6 +++--- fs/f2fs/segment.c | 3 +++ fs/f2fs/super.c | 5 +++++ include/linux/f2fs_fs.h | 1 + 6 files changed, 19 insertions(+), 3 deletions(-) diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index f955cd3..622dca7 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -1259,6 +1259,11 @@ static void update_ckpt_flags(struct f2fs_sb_info *sbi, struct cp_control *cpc) else __clear_ckpt_flags(ckpt, CP_DISABLED_FLAG); + if (is_sbi_flag_set(sbi, SBI_CP_DISABLED_QUICK)) + __set_ckpt_flags(ckpt, CP_DISABLED_QUICK_FLAG); + else + __clear_ckpt_flags(ckpt, CP_DISABLED_QUICK_FLAG); + if (is_sbi_flag_set(sbi, SBI_QUOTA_SKIP_FLUSH)) __set_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG); else diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 6b6ec56..fe95abb 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -191,6 +191,7 @@ enum { #define DEF_CP_INTERVAL 60 /* 60 secs */ #define DEF_IDLE_INTERVAL 5 /* 5 secs */ #define DEF_DISABLE_INTERVAL 5 /* 5 secs */ +#define DEF_DISABLE_QUICK_INTERVAL 1 /* 1 secs */ #define DEF_UMOUNT_DISCARD_TIMEOUT 5 /* 5 secs */ struct cp_control { @@ -1101,6 +1102,7 @@ enum { SBI_IS_SHUTDOWN, /* shutdown by ioctl */ SBI_IS_RECOVERED, /* recovered orphan/data */ SBI_CP_DISABLED, /* CP was disabled last mount */ + SBI_CP_DISABLED_QUICK, /* CP was disabled quickly */ SBI_QUOTA_NEED_FLUSH, /* need to flush quota info in CP */ SBI_QUOTA_SKIP_FLUSH, /* skip flushing quota in current CP */ SBI_QUOTA_NEED_REPAIR, /* quota file may be corrupted */ diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 0d46132..fe6f92f 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -1972,11 +1972,11 @@ static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) break; case F2FS_GOING_DOWN_NEED_FSCK: set_sbi_flag(sbi, SBI_NEED_FSCK); + set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK); + set_sbi_flag(sbi, SBI_IS_DIRTY); /* do checkpoint only */ ret = f2fs_sync_fs(sb, 1); - if (ret) - goto out; - break; + goto out; default: ret = -EINVAL; goto out; diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 5b2b9be..342b720 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -868,6 +868,9 @@ int f2fs_disable_cp_again(struct f2fs_sb_info *sbi) if (holes[DATA] > ovp || holes[NODE] > ovp) return -EAGAIN; + if (is_sbi_flag_set(sbi, SBI_CP_DISABLED_QUICK) && + dirty_segments(sbi) > overprovision_segments(sbi)) + return -EAGAIN; return 0; } diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 24efd76..5e1f857 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -3205,6 +3205,10 @@ try_onemore: if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG)) set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); + if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) { + set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK); + sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL; + } /* Initialize device list */ err = f2fs_scan_devices(sbi); @@ -3392,6 +3396,7 @@ skip_recovery: cur_cp_version(F2FS_CKPT(sbi))); f2fs_update_time(sbi, CP_TIME); f2fs_update_time(sbi, REQ_TIME); + clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK); return 0; free_meta: diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h index d771104..d6befe1 100644 --- a/include/linux/f2fs_fs.h +++ b/include/linux/f2fs_fs.h @@ -116,6 +116,7 @@ struct f2fs_super_block { /* * For checkpoint */ +#define CP_DISABLED_QUICK_FLAG 0x00002000 #define CP_DISABLED_FLAG 0x00001000 #define CP_QUOTA_NEED_FSCK_FLAG 0x00000800 #define CP_LARGE_NAT_BITMAP_FLAG 0x00000400 -- 2.7.4