Description
In the Linux kernel, the following vulnerability has been resolved: md/raid1,raid10: don't ignore IO flags If blk-wbt is enabled by default, it's found that raid write performance is quite bad because all IO are throttled by wbt of underlying disks, due to flag REQ_IDLE is ignored. And turns out this behaviour exist since blk-wbt is introduced. Other than REQ_IDLE, other flags should not be ignored as well, for example REQ_META can be set for filesystems, clearing it can cause priority reverse problems; And REQ_NOWAIT should not be cleared as well, because io will wait instead of failing directly in underlying disks. Fix those problems by keep IO flags from master bio. Fises: f51d46d0e7cb ("md: add support for REQ_NOWAIT")
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
5404bc7a87b9949cf61e0174b21f80e73239ab25 to < 10f4ff4baeb6951cf58282954318827b6852d501affected5404bc7a87b9949cf61e0174b21f80e73239ab25 to < 73506e581c0b1814cdfd2229d589f30751d7de26affected5404bc7a87b9949cf61e0174b21f80e73239ab25 to < 8a0adf3d778c4a0893c6d34a9e1b0082a6f1c495affected5404bc7a87b9949cf61e0174b21f80e73239ab25 to < e879a0d9cb086c8e52ce6c04e5bfa63825a6213caffected
Linux Linux
Default version status: affected
2.6.19affected0 to < 2.6.19unaffected6.6.136 to ≤ 6.6.*unaffected6.12.46 to ≤ 6.12.*unaffected6.14.2 to ≤ 6.14.*unaffected6.15 to ≤ *unaffected