git: 8ef8057ed5f1 - stable/13 - vfs: add vfs_smr_quiesce

[Mateusz Guzik]

The branch stable/13 has been updated by mjg:

URL: https://cgit.FreeBSD.org/src/commit/?id=8ef8057ed5f16dde7a243e2cc557bc6cd4dfcdf9

commit 8ef8057ed5f16dde7a243e2cc557bc6cd4dfcdf9
Author:     Mateusz Guzik <mjg at FreeBSD.org>
AuthorDate: 2021-03-30 14:44:10 +0000
Commit:     Mateusz Guzik <mjg at FreeBSD.org>
CommitDate: 2021-04-10 05:57:55 +0000

    vfs: add vfs_smr_quiesce
    
    This can be used to observe all CPUs not executing while within
    vfs_smr_enter.
    
    (cherry picked from commit 3f56bc79860ec20f0e53de42dab1c117ee68e37b)
---
 sys/sys/vnode.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sys/sys/vnode.h b/sys/sys/vnode.h
index bb07cd80e42e..e37302aeb379 100644
--- a/sys/sys/vnode.h
+++ b/sys/sys/vnode.h
@@ -1109,6 +1109,7 @@ int vn_dir_check_exec(struct vnode *vp, struct componentname *cnp);
 #define VFS_SMR()	vfs_smr
 #define vfs_smr_enter()	smr_enter(VFS_SMR())
 #define vfs_smr_exit()	smr_exit(VFS_SMR())
+#define vfs_smr_quiesce()	quiesce_all_critical()
 #define vfs_smr_entered_load(ptr)	smr_entered_load((ptr), VFS_SMR())
 #define VFS_SMR_ASSERT_ENTERED()	SMR_ASSERT_ENTERED(VFS_SMR())
 #define VFS_SMR_ASSERT_NOT_ENTERED()	SMR_ASSERT_NOT_ENTERED(VFS_SMR())