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| author | Shaohua Li <shli@fb.com> | 2017-01-04 16:10:19 -0800 |
|---|---|---|
| committer | Shaohua Li <shli@fb.com> | 2017-01-05 11:45:18 -0800 |
| commit | 394ed8e4743b0cfc5496fe49059fbfc2bc8eae35 (patch) | |
| tree | 65412c7b017be0fc1a2316f4a0778328421a0f4c /drivers/md/raid0.c | |
| parent | 99f17890f04cff0262de7393c60a2f6d9c9c7e71 (diff) | |
| download | linux-stable-394ed8e4743b0cfc5496fe49059fbfc2bc8eae35.tar.gz linux-stable-394ed8e4743b0cfc5496fe49059fbfc2bc8eae35.tar.bz2 linux-stable-394ed8e4743b0cfc5496fe49059fbfc2bc8eae35.zip | |
md: cleanup mddev flag clear for takeover
Commit 6995f0b (md: takeover should clear unrelated bits) clear
unrelated bits, but it's quite fragile. To avoid error in the future,
define a macro for unsupported mddev flags for each raid type and use it
to clear unsupported mddev flags. This should be less error-prone.
Suggested-by: NeilBrown <neilb@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Diffstat (limited to 'drivers/md/raid0.c')
| -rw-r--r-- | drivers/md/raid0.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c index a162fedeb51a..848365d474f3 100644 --- a/drivers/md/raid0.c +++ b/drivers/md/raid0.c @@ -26,6 +26,11 @@ #include "raid0.h" #include "raid5.h" +#define UNSUPPORTED_MDDEV_FLAGS \ + ((1L << MD_HAS_JOURNAL) | \ + (1L << MD_JOURNAL_CLEAN) | \ + (1L << MD_FAILFAST_SUPPORTED)) + static int raid0_congested(struct mddev *mddev, int bits) { struct r0conf *conf = mddev->private; @@ -539,8 +544,7 @@ static void *raid0_takeover_raid45(struct mddev *mddev) mddev->delta_disks = -1; /* make sure it will be not marked as dirty */ mddev->recovery_cp = MaxSector; - clear_bit(MD_HAS_JOURNAL, &mddev->flags); - clear_bit(MD_JOURNAL_CLEAN, &mddev->flags); + mddev_clear_unsupported_flags(mddev, UNSUPPORTED_MDDEV_FLAGS); create_strip_zones(mddev, &priv_conf); @@ -583,7 +587,7 @@ static void *raid0_takeover_raid10(struct mddev *mddev) mddev->degraded = 0; /* make sure it will be not marked as dirty */ mddev->recovery_cp = MaxSector; - clear_bit(MD_FAILFAST_SUPPORTED, &mddev->flags); + mddev_clear_unsupported_flags(mddev, UNSUPPORTED_MDDEV_FLAGS); create_strip_zones(mddev, &priv_conf); return priv_conf; @@ -626,7 +630,7 @@ static void *raid0_takeover_raid1(struct mddev *mddev) mddev->raid_disks = 1; /* make sure it will be not marked as dirty */ mddev->recovery_cp = MaxSector; - clear_bit(MD_FAILFAST_SUPPORTED, &mddev->flags); + mddev_clear_unsupported_flags(mddev, UNSUPPORTED_MDDEV_FLAGS); create_strip_zones(mddev, &priv_conf); return priv_conf; |