diff options
| author | Tom <tomut@yahoo.com> | 2021-01-23 09:11:45 -0700 |
|---|---|---|
| committer | Andreas Kling <kling@serenityos.org> | 2021-01-27 22:48:41 +0100 |
| commit | 250a31045485f231ad7d5b51247688796c5e9d47 (patch) | |
| tree | b5e7add3e1e8556618811ba7f10a6eeebfb6db1d /Kernel/VM/SharedInodeVMObject.cpp | |
| parent | ac3927086fe663db0cb04fd0d746a68c96e229b4 (diff) | |
| download | serenity-250a31045485f231ad7d5b51247688796c5e9d47.zip | |
Kernel: Release MM lock while yielding from inode page fault handler
We need to make sure other processors can grab the MM lock while we
wait, so release it when we might block. Reading the page from
disk may also block, so release it during that time as well.
Diffstat (limited to 'Kernel/VM/SharedInodeVMObject.cpp')
| -rw-r--r-- | Kernel/VM/SharedInodeVMObject.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Kernel/VM/SharedInodeVMObject.cpp b/Kernel/VM/SharedInodeVMObject.cpp index 4a04d5031f..33b0316f59 100644 --- a/Kernel/VM/SharedInodeVMObject.cpp +++ b/Kernel/VM/SharedInodeVMObject.cpp @@ -34,8 +34,8 @@ namespace Kernel { NonnullRefPtr<SharedInodeVMObject> SharedInodeVMObject::create_with_inode(Inode& inode) { size_t size = inode.size(); - if (inode.shared_vmobject()) - return *inode.shared_vmobject(); + if (auto shared_vmobject = inode.shared_vmobject()) + return shared_vmobject.release_nonnull(); auto vmobject = adopt(*new SharedInodeVMObject(inode, size)); vmobject->inode().set_shared_vmobject(*vmobject); return vmobject; |