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authorLinus Torvalds <torvalds@linux-foundation.org>2016-04-15 15:44:10 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-04-15 15:44:10 -0700
commit2e572599139d27db3aaf540b0d34f0a4f58dfca1 (patch)
treea96c8d562d50963c923edd777b60a2dc3749462c /drivers/block
parentf3c9a1abbe9d4c9565fdb0755e2c7814f32d4f62 (diff)
parenta7297a6a3a3322b054592e8e988981d2f5f29cc4 (diff)
downloadlinux-2e572599139d27db3aaf540b0d34f0a4f58dfca1.tar.bz2
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe: "A few fixes for the current series. This contains: - Two fixes for NVMe: One fixes a reset race that can be triggered by repeated insert/removal of the module. The other fixes an issue on some platforms, where we get probe timeouts since legacy interrupts isn't working. This used not to be a problem since we had the worker thread poll for completions, but since that was killed off, it means those poor souls can't successfully probe their NVMe device. Use a proper IRQ check and probe (msi-x -> msi ->legacy), like most other drivers to work around this. Both from Keith. - A loop corruption issue with offset in iters, from Ming Lei. - A fix for not having the partition stat per cpu ref count initialized before sending out the KOBJ_ADD, which could cause user space to access the counter prior to initialization. Also from Ming Lei. - A fix for using the wrong congestion state, from Kaixu Xia" * 'for-linus' of git://git.kernel.dk/linux-block: block: loop: fix filesystem corruption in case of aio/dio NVMe: Always use MSI/MSI-x interrupts NVMe: Fix reset/remove race writeback: fix the wrong congested state variable definition block: partition: initialize percpuref before sending out KOBJ_ADD
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/loop.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 423f4ca7d712..80cf8add46ff 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -488,6 +488,12 @@ static int lo_rw_aio(struct loop_device *lo, struct loop_cmd *cmd,
bvec = __bvec_iter_bvec(bio->bi_io_vec, bio->bi_iter);
iov_iter_bvec(&iter, ITER_BVEC | rw, bvec,
bio_segments(bio), blk_rq_bytes(cmd->rq));
+ /*
+ * This bio may be started from the middle of the 'bvec'
+ * because of bio splitting, so offset from the bvec must
+ * be passed to iov iterator
+ */
+ iter.iov_offset = bio->bi_iter.bi_bvec_done;
cmd->iocb.ki_pos = pos;
cmd->iocb.ki_filp = file;