From f2f66a2f886383fb76aca8ecc1bcc116c5d1f6fe Mon Sep 17 00:00:00 2001 From: Zhao Lei Date: Tue, 21 Jul 2015 12:22:29 +0800 Subject: [PATCH] btrfs: Check cancel and pause in interval of scrub operation Old code checking cancel and pause request inside scrub stripe operation, like: loop() { if (parity) { scrub_parity_stripe(); continue; } check_cancel_and_pause() scrub_normal_stripe(); } Reason is when introduce raid56 stripe scrub, new code is inserted simplely to front of loop. Better to: loop() { check_cancel_and_pause() if (parity) scrub_parity_stripe(); else scrub_normal_stripe(); } This patch adjusted code place to realize above sequence. Signed-off-by: Zhao Lei Signed-off-by: Chris Mason --- fs/btrfs/scrub.c | 34 ++++++++++++++++++---------------- 1 file changed, 18 insertions(+), 16 deletions(-) diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index 35d49b28a688..d99cdb11d4d9 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -3105,22 +3105,6 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx, */ ret = 0; while (physical < physical_end) { - /* for raid56, we skip parity stripe */ - if (map->type & BTRFS_BLOCK_GROUP_RAID56_MASK) { - ret = get_raid56_logic_offset(physical, num, - map, &logical, &stripe_logical); - logical += base; - if (ret) { - stripe_logical += base; - stripe_end = stripe_logical + increment - 1; - ret = scrub_raid56_parity(sctx, map, scrub_dev, - ppath, stripe_logical, - stripe_end); - if (ret) - goto out; - goto skip; - } - } /* * canceled? */ @@ -3145,6 +3129,24 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx, scrub_blocked_if_needed(fs_info); } + /* for raid56, we skip parity stripe */ + if (map->type & BTRFS_BLOCK_GROUP_RAID56_MASK) { + ret = get_raid56_logic_offset(physical, num, map, + &logical, + &stripe_logical); + logical += base; + if (ret) { + stripe_logical += base; + stripe_end = stripe_logical + increment - 1; + ret = scrub_raid56_parity(sctx, map, scrub_dev, + ppath, stripe_logical, + stripe_end); + if (ret) + goto out; + goto skip; + } + } + if (btrfs_fs_incompat(fs_info, SKINNY_METADATA)) key.type = BTRFS_METADATA_ITEM_KEY; else -- 2.39.5