| commit | 87f62b1cf14df14e016ca1f89e47e8573d4bb99a | |
| author | Matthew Dillon <dillon@apollo.backplane.com> | |
| Sun, 8 Jan 2017 08:33:11 +0000 (8 00:33 -0800) | ||
| committer | Matthew Dillon <dillon@apollo.backplane.com> | |
| Sun, 8 Jan 2017 08:33:11 +0000 (8 00:33 -0800) | ||
| tree | ac562625c51b6c52d0c4daea9204b5e505065792 | treesnapshot (tar.gz zip) |
| parent | 6422eba42a1e6dcaa450be548207c7f7cdb9f776 | commitdiff |
kernel - Fix improper mplock in mount path
* VFS_MOUNT() was being called before MNTK_ALL_MPSAFE could be set by
the filesystem, causing the operation to run with the MP token held.
* Add VFCF_MPSAFE to the vfsconf flags and specify it for MPSAFE filesystems
in their VFS_SET() specification. This flag causes MNTK_ALL_MPSAFE to
be set in mount->mnt_kern_flags prior to the VFS_MOUNT() call. Set this
flag for devfs, procfs, tmpfs, nullfs, hammer, and hammer2.
* Primarily effects synth or other bulk-builds which do a lot of mounting.
* VFS_MOUNT() was being called before MNTK_ALL_MPSAFE could be set by
the filesystem, causing the operation to run with the MP token held.
* Add VFCF_MPSAFE to the vfsconf flags and specify it for MPSAFE filesystems
in their VFS_SET() specification. This flag causes MNTK_ALL_MPSAFE to
be set in mount->mnt_kern_flags prior to the VFS_MOUNT() call. Set this
flag for devfs, procfs, tmpfs, nullfs, hammer, and hammer2.
* Primarily effects synth or other bulk-builds which do a lot of mounting.