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| author | Manuel Bentele | 2020-09-15 14:23:38 +0200 |
|---|---|---|
| committer | Manuel Bentele | 2020-09-16 07:37:56 +0200 |
| commit | 800917a21e3c34d3fbeb46bdd1901808dde89fc4 (patch) | |
| tree | 47cf88de334bc1a3a55d350d9117537283a49597 | |
| parent | Changed CMake minimum required version to 3.10 (diff) | |
| download | xloop-800917a21e3c34d3fbeb46bdd1901808dde89fc4.tar.gz xloop-800917a21e3c34d3fbeb46bdd1901808dde89fc4.tar.xz xloop-800917a21e3c34d3fbeb46bdd1901808dde89fc4.zip | |
Ported RAW file format kernel module to Linux 4.18.x
| -rw-r--r-- | kernel/xloop_file_fmt_raw.c | 14 | ||||
| -rw-r--r-- | kernel/xloop_main.c | 8 |
2 files changed, 21 insertions, 1 deletions
diff --git a/kernel/xloop_file_fmt_raw.c b/kernel/xloop_file_fmt_raw.c index c8e90ef..f963e92 100644 --- a/kernel/xloop_file_fmt_raw.c +++ b/kernel/xloop_file_fmt_raw.c @@ -176,11 +176,16 @@ static int __raw_file_fmt_rw_aio(struct xloop_device *xlo, int nr_bvec = 0; int ret; +#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 1, 0) rq_for_each_bvec(tmp, rq, rq_iter) nr_bvec++; +#endif if (rq->bio != rq->biotail) { - +#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 1, 0) + __rq_for_each_bio(bio, rq) + nr_bvec += bio_segments(bio); +#endif bvec = kmalloc_array(nr_bvec, sizeof(struct bio_vec), GFP_NOIO); if (!bvec) @@ -193,7 +198,11 @@ static int __raw_file_fmt_rw_aio(struct xloop_device *xlo, * copy bio->bi_iov_vec to new bvec. The rq_for_each_bvec * API will take care of all details for us. */ +#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 1, 0) rq_for_each_bvec(tmp, rq, rq_iter) { +#else + rq_for_each_segment(tmp, rq, rq_iter) { +#endif *bvec = tmp; bvec++; } @@ -207,6 +216,9 @@ static int __raw_file_fmt_rw_aio(struct xloop_device *xlo, */ offset = bio->bi_iter.bi_bvec_done; bvec = __bvec_iter_bvec(bio->bi_io_vec, bio->bi_iter); +#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 1, 0) + nr_bvec = bio_segments(bio); +#endif } atomic_set(&cmd->ref, 2); diff --git a/kernel/xloop_main.c b/kernel/xloop_main.c index c6a6c83..703044f 100644 --- a/kernel/xloop_main.c +++ b/kernel/xloop_main.c @@ -1471,7 +1471,11 @@ static int xlo_ioctl(struct block_device *bdev, fmode_t mode, case XLOOP_SET_BLOCK_SIZE: if (!(mode & FMODE_WRITE) && !capable(CAP_SYS_ADMIN)) return -EPERM; +#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 4, 0) fallthrough; +#else + /* fall through */ +#endif default: err = xlo_simple_ioctl(xlo, cmd, arg); break; @@ -1623,7 +1627,11 @@ static int xlo_compat_ioctl(struct block_device *bdev, fmode_t mode, case XLOOP_SET_STATUS64: case XLOOP_CONFIGURE: arg = (unsigned long) compat_ptr(arg); +#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 4, 0) fallthrough; +#else + /* fall through */ +#endif case XLOOP_SET_FD: case XLOOP_CHANGE_FD: case XLOOP_SET_BLOCK_SIZE: |