diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-08-26 11:08:47 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-08-26 11:08:47 -0700 |
| commit | f9ed72dde34e3d5253e206e4bc3edbc6373015d6 (patch) | |
| tree | 9bd87176acfb029e19468505bd189096da16eb07 /drivers | |
| parent | f5db4b31b31504a1058339bc00488bf56ad1f0aa (diff) | |
| parent | 74c9c9134bf8d8a6d5c5683f60262eed3d6fb5ac (diff) | |
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"Two fixes in this pull request:
- The writeback regression fix from Tejun, which has been weeks in
the making. This fixes a case where we would sometimes not issue
writeback when we should have.
- An older fix for a memory corruption issue in mtip32xx. It was
deferred since we wanted a better fix for this (driver should not
have to handle that case), but given the timing, it's better to put
the simple fix in for 4.2 release"
* 'for-linus' of git://git.kernel.dk/linux-block:
mtip32x: fix regression introduced by blk-mq per-hctx flush
writeback: sync_inodes_sb() must write out I_DIRTY_TIME inodes and always call wait_sb_inodes()
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/block/mtip32xx/mtip32xx.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c index 4a2ef09e6704..f504232c1ee7 100644 --- a/drivers/block/mtip32xx/mtip32xx.c +++ b/drivers/block/mtip32xx/mtip32xx.c @@ -3756,6 +3756,14 @@ static int mtip_init_cmd(void *data, struct request *rq, unsigned int hctx_idx, struct mtip_cmd *cmd = blk_mq_rq_to_pdu(rq); u32 host_cap_64 = readl(dd->mmio + HOST_CAP) & HOST_CAP_64; + /* + * For flush requests, request_idx starts at the end of the + * tag space. Since we don't support FLUSH/FUA, simply return + * 0 as there's nothing to be done. + */ + if (request_idx >= MTIP_MAX_COMMAND_SLOTS) + return 0; + cmd->command = dmam_alloc_coherent(&dd->pdev->dev, CMD_DMA_ALLOC_SZ, &cmd->command_dma, GFP_KERNEL); if (!cmd->command) |