diff options
Diffstat (limited to 'sys/kern/vfs_subr.c')
| -rw-r--r-- | sys/kern/vfs_subr.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c index 7c243b6..1c26368 100644 --- a/sys/kern/vfs_subr.c +++ b/sys/kern/vfs_subr.c @@ -279,6 +279,8 @@ SYSCTL_INT(_debug, OID_AUTO, vnlru_nowhere, CTLFLAG_RW, #define VSHOULDFREE(vp) (!((vp)->v_iflag & VI_FREE) && !(vp)->v_holdcnt) #define VSHOULDBUSY(vp) (((vp)->v_iflag & VI_FREE) && (vp)->v_holdcnt) +/* Shift count for (uintptr_t)vp to initialize vp->v_hash. */ +static int vnsz2log; /* * Initialize the vnode management data structures. @@ -293,6 +295,7 @@ SYSCTL_INT(_debug, OID_AUTO, vnlru_nowhere, CTLFLAG_RW, static void vntblinit(void *dummy __unused) { + u_int i; int physvnodes, virtvnodes; /* @@ -332,6 +335,9 @@ vntblinit(void *dummy __unused) syncer_maxdelay = syncer_mask + 1; mtx_init(&sync_mtx, "Syncer mtx", NULL, MTX_DEF); cv_init(&sync_wakeup, "syncer"); + for (i = 1; i <= sizeof(struct vnode); i <<= 1) + vnsz2log++; + vnsz2log--; } SYSINIT(vfs, SI_SUB_VFS, SI_ORDER_FIRST, vntblinit, NULL); @@ -1067,6 +1073,14 @@ alloc: } rangelock_init(&vp->v_rl); + /* + * For the filesystems which do not use vfs_hash_insert(), + * still initialize v_hash to have vfs_hash_index() useful. + * E.g., nullfs uses vfs_hash_index() on the lower vnode for + * its own hashing. + */ + vp->v_hash = (uintptr_t)vp >> vnsz2log; + *vpp = vp; return (0); } |
