diff options
Diffstat (limited to 'block/raw-posix.c')
| -rw-r--r-- | block/raw-posix.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/block/raw-posix.c b/block/raw-posix.c index 5a777e7137..1c88ad89d8 100644 --- a/block/raw-posix.c +++ b/block/raw-posix.c @@ -147,6 +147,7 @@ typedef struct BDRVRawState { bool has_discard:1; bool has_write_zeroes:1; bool discard_zeroes:1; + bool has_fallocate; bool needs_alignment; } BDRVRawState; @@ -452,6 +453,7 @@ static int raw_open_common(BlockDriverState *bs, QDict *options, } if (S_ISREG(st.st_mode)) { s->discard_zeroes = true; + s->has_fallocate = true; } if (S_ISBLK(st.st_mode)) { #ifdef BLKDISCARDZEROES @@ -902,7 +904,7 @@ static int translate_err(int err) return err; } -#if defined(CONFIG_FALLOCATE_PUNCH_HOLE) || defined(CONFIG_FALLOCATE_ZERO_RANGE) +#ifdef CONFIG_FALLOCATE static int do_fallocate(int fd, int mode, off_t offset, off_t len) { do { @@ -965,6 +967,16 @@ static ssize_t handle_aiocb_write_zeroes(RawPosixAIOData *aiocb) } #endif +#ifdef CONFIG_FALLOCATE + if (s->has_fallocate && aiocb->aio_offset >= bdrv_getlength(aiocb->bs)) { + int ret = do_fallocate(s->fd, 0, aiocb->aio_offset, aiocb->aio_nbytes); + if (ret == 0 || ret != -ENOTSUP) { + return ret; + } + s->has_fallocate = false; + } +#endif + return -ENOTSUP; } |