diff options
| author | Zhao Lei <zhaolei@cn.fujitsu.com> | 2015-07-21 12:22:29 +0800 |
|---|---|---|
| committer | Chris Mason <clm@fb.com> | 2015-08-09 07:07:11 -0700 |
| commit | f2f66a2f886383fb76aca8ecc1bcc116c5d1f6fe (patch) | |
| tree | bdacc73dabeab49648b13a2a9df5b66032682e70 /fs | |
| parent | 78fa177029802f7f10953d357067171f39a79b81 (diff) | |
| download | lwn-f2f66a2f886383fb76aca8ecc1bcc116c5d1f6fe.tar.gz lwn-f2f66a2f886383fb76aca8ecc1bcc116c5d1f6fe.zip | |
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 <zhaolei@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/scrub.c | 34 |
1 files 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 |