diff options
| -rw-r--r-- | sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c index ba0f0eb48717..85647a89ef15 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c @@ -67,6 +67,7 @@ #include <sys/sf_buf.h> #include <sys/sched.h> #include <sys/acl.h> +#include <vm/vm_pageout.h> /* * Programming rules. @@ -481,7 +482,7 @@ again: uiomove_fromphys(&m, off, bytes, uio); VM_OBJECT_LOCK(obj); vm_page_wakeup(m); - } else if (m != NULL && uio->uio_segflg == UIO_NOCOPY) { + } else if (uio->uio_segflg == UIO_NOCOPY) { /* * The code below is here to make sendfile(2) work * correctly with ZFS. As pointed out by ups@ @@ -491,7 +492,7 @@ again: */ KASSERT(off == 0, ("unexpected offset in mappedread for sendfile")); - if ((m->oflags & VPO_BUSY) != 0) { + if (m != NULL && (m->oflags & VPO_BUSY) != 0) { /* * Reference the page before unlocking and * sleeping so that the page daemon is less @@ -501,8 +502,17 @@ again: vm_page_flag_set(m, PG_REFERENCED); vm_page_sleep(m, "zfsmrb"); goto again; + } else if (m == NULL) { + m = vm_page_alloc(obj, OFF_TO_IDX(start), + VM_ALLOC_NOBUSY | VM_ALLOC_NORMAL); + if (m == NULL) { + VM_OBJECT_UNLOCK(obj); + VM_WAIT; + VM_OBJECT_LOCK(obj); + goto again; + } } - vm_page_busy(m); + vm_page_io_start(m); VM_OBJECT_UNLOCK(obj); if (dirbytes > 0) { error = dmu_read_uio(os, zp->z_id, uio, @@ -520,7 +530,7 @@ again: VM_OBJECT_LOCK(obj); if (error == 0) m->valid = VM_PAGE_BITS_ALL; - vm_page_wakeup(m); + vm_page_io_finish(m); if (error == 0) { uio->uio_resid -= bytes; uio->uio_offset += bytes; |