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hw/9pfs: Add yield support for preadv coroutine 

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
This commit is contained in:
Aneesh Kumar K.V 2011-05-08 15:16:22 +05:30
parent 8c158561a0
commit 7eafdcc96c
2 changed files with 19 additions and 0 deletions
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17
hw/9pfs/cofile.c
View File

@ -144,3 +144,20 @@ int v9fs_co_pwritev(V9fsState *s, V9fsFidState *fidp,
}); });
return err; return err;
} }
int v9fs_co_preadv(V9fsState *s, V9fsFidState *fidp,
struct iovec *iov, int iovcnt, int64_t offset)
{
int fd;
int err;
fd = fidp->fs.fd;
v9fs_co_run_in_worker(
{
err = s->ops->preadv(&s->ctx, fd, iov, iovcnt, offset);
if (err < 0) {
err = -errno;
}
});
return err;
}

2
hw/9pfs/virtio-9p-coth.h
View File

@ -91,4 +91,6 @@ extern int v9fs_co_symlink(V9fsState *, V9fsFidState *, const char *,
extern int v9fs_co_link(V9fsState *, V9fsString *, V9fsString *); extern int v9fs_co_link(V9fsState *, V9fsString *, V9fsString *);
extern int v9fs_co_pwritev(V9fsState *, V9fsFidState *, extern int v9fs_co_pwritev(V9fsState *, V9fsFidState *,
struct iovec *, int, int64_t); struct iovec *, int, int64_t);
extern int v9fs_co_preadv(V9fsState *, V9fsFidState *,
struct iovec *, int, int64_t);
#endif #endif