diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-08-27 18:37:48 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-09-02 01:49:26 +0300 |
| commit | 3310eebafe6f9a872c1f757b3d822dafae9c0cd8 (patch) | |
| tree | 0555d50aca08c223fc49b2f8b2846e25c31911a3 /block/blk-map.c | |
| parent | 7589ad6729d6a707c6ce97693106d42cbb121b42 (diff) | |
| download | linux-3310eebafe6f9a872c1f757b3d822dafae9c0cd8.tar.xz | |
block: remove the BIO_USER_MAPPED flag
Just check if there is private data, in which case the bio must have
originated from bio_copy_user_iov.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-map.c')
| -rw-r--r-- | block/blk-map.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/block/blk-map.c b/block/blk-map.c index 427962ac2f67..be118926ccf4 100644 --- a/block/blk-map.c +++ b/block/blk-map.c @@ -109,7 +109,7 @@ static int bio_uncopy_user(struct bio *bio) struct bio_map_data *bmd = bio->bi_private; int ret = 0; - if (!bmd || !bmd->is_null_mapped) { + if (!bmd->is_null_mapped) { /* * if we're in a workqueue, the request is orphaned, so * don't copy into a random user address space, just free @@ -307,8 +307,6 @@ static int bio_map_user_iov(struct request *rq, struct iov_iter *iter, break; } - bio_set_flag(bio, BIO_USER_MAPPED); - /* * Subtle: if we end up needing to bounce a bio, it would normally * disappear when its bi_end_io is run. However, we need the original @@ -654,12 +652,12 @@ int blk_rq_unmap_user(struct bio *bio) if (unlikely(bio_flagged(bio, BIO_BOUNCED))) mapped_bio = bio->bi_private; - if (bio_flagged(mapped_bio, BIO_USER_MAPPED)) { - bio_unmap_user(mapped_bio); - } else { + if (bio->bi_private) { ret2 = bio_uncopy_user(mapped_bio); if (ret2 && !ret) ret = ret2; + } else { + bio_unmap_user(mapped_bio); } mapped_bio = bio; |