diff options
| author | kib <kib@FreeBSD.org> | 2014-10-04 18:28:27 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2014-10-04 18:28:27 +0000 |
| commit | 6be27132406b3f42ed23c97c6bfb63b7b5f2b4a3 (patch) | |
| tree | 7e931adea84b04f34e64826a781eae166b03e83c /sys/kern | |
| parent | 7fae36b14cb982f6eecccf2ce6e59d884fa4b55e (diff) | |
| download | FreeBSD-src-6be27132406b3f42ed23c97c6bfb63b7b5f2b4a3.zip FreeBSD-src-6be27132406b3f42ed23c97c6bfb63b7b5f2b4a3.tar.gz | |
Add IO_RANGELOCKED flag for vn_rdwr(9), which specifies that vnode is
not locked, but range is.
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
Diffstat (limited to 'sys/kern')
| -rw-r--r-- | sys/kern/vfs_vnops.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/sys/kern/vfs_vnops.c b/sys/kern/vfs_vnops.c index 617bda0..65b5371 100644 --- a/sys/kern/vfs_vnops.c +++ b/sys/kern/vfs_vnops.c @@ -504,13 +504,16 @@ vn_rdwr(enum uio_rw rw, struct vnode *vp, void *base, int len, off_t offset, error = 0; if ((ioflg & IO_NODELOCKED) == 0) { - if (rw == UIO_READ) { - rl_cookie = vn_rangelock_rlock(vp, offset, - offset + len); - } else { - rl_cookie = vn_rangelock_wlock(vp, offset, - offset + len); - } + if ((ioflg & IO_RANGELOCKED) == 0) { + if (rw == UIO_READ) { + rl_cookie = vn_rangelock_rlock(vp, offset, + offset + len); + } else { + rl_cookie = vn_rangelock_wlock(vp, offset, + offset + len); + } + } else + rl_cookie = NULL; mp = NULL; if (rw == UIO_WRITE) { if (vp->v_type != VCHR && |
