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| author |   NeilBrown <neilb@suse.de> | 2015-02-18 11:35:14 +1100 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2015-02-18 11:35:14 +1100 |
| commit | 26ac107378c4742978216be1005b7291b799c7b2 (patch) | |
| tree | 1ec992f01a3873c7c033c6b41633cbdeb5dec0dc /drivers/net/wireless/iwlwifi/mvm/rs.h | |
| parent | md/raid10: round up to bdev_logical_block_size in narrow_write_error. (diff) | |
| download | linux-dev-26ac107378c4742978216be1005b7291b799c7b2.tar.xz linux-dev-26ac107378c4742978216be1005b7291b799c7b2.zip | |
md/raid5: Fix livelock when array is both resyncing and degraded.
Commit a7854487cd7128a30a7f4f5259de9f67d5efb95f:
md: When RAID5 is dirty, force reconstruct-write instead of read-modify-write.
Causes an RCW cycle to be forced even when the array is degraded.
A degraded array cannot support RCW as that requires reading all data
blocks, and one may be missing.
Forcing an RCW when it is not possible causes a live-lock and the code
spins, repeatedly deciding to do something that cannot succeed.
So change the condition to only force RCW on non-degraded arrays.
Reported-by: Manibalan P <pmanibalan@amiindia.co.in>
Bisected-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Tested-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Fixes: a7854487cd7128a30a7f4f5259de9f67d5efb95f
Cc: stable@vger.kernel.org (v3.7+)
Diffstat (limited to 'drivers/net/wireless/iwlwifi/mvm/rs.h')
0 files changed, 0 insertions, 0 deletions