Date: Mon, 7 Jun 2021 00:40:19 GMT From: Mateusz Guzik <mjg@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 56687b27b87c - stable/13 - tmpfs: save on common case relocking in tmpfs_reclaim Message-ID: <202106070040.1570eJ7D066368@gitrepo.freebsd.org>
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The branch stable/13 has been updated by mjg: URL: https://cgit.FreeBSD.org/src/commit/?id=56687b27b87c6fcd3516e56595b0d153225cddd2 commit 56687b27b87c6fcd3516e56595b0d153225cddd2 Author: Mateusz Guzik <mjg@FreeBSD.org> AuthorDate: 2021-05-29 01:36:50 +0000 Commit: Mateusz Guzik <mjg@FreeBSD.org> CommitDate: 2021-06-07 00:34:59 +0000 tmpfs: save on common case relocking in tmpfs_reclaim (cherry picked from commit 331a7601c9c21c1e55c57c5338e7affced9c7b7c) --- sys/fs/tmpfs/tmpfs_vnops.c | 19 ++++--------------- 1 file changed, 4 insertions(+), 15 deletions(-) diff --git a/sys/fs/tmpfs/tmpfs_vnops.c b/sys/fs/tmpfs/tmpfs_vnops.c index 43a2aa77dbbb..5d0d80639046 100644 --- a/sys/fs/tmpfs/tmpfs_vnops.c +++ b/sys/fs/tmpfs/tmpfs_vnops.c @@ -1525,26 +1525,18 @@ tmpfs_reclaim(struct vop_reclaim_args *v) struct vnode *vp; struct tmpfs_mount *tmp; struct tmpfs_node *node; - bool unlock, tm_locked; + bool unlock; vp = v->a_vp; node = VP_TO_TMPFS_NODE(vp); tmp = VFS_TO_TMPFS(vp->v_mount); - tm_locked = false; if (vp->v_type == VREG) tmpfs_destroy_vobject(vp, node->tn_reg.tn_aobj); vp->v_object = NULL; -relock: + TMPFS_LOCK(tmp); TMPFS_NODE_LOCK(node); - if (!tm_locked && node->tn_links == 0 && - (node->tn_vpstate & TMPFS_VNODE_ALLOCATING) == 0) { - TMPFS_NODE_UNLOCK(node); - TMPFS_LOCK(tmp); - tm_locked = true; - goto relock; - } tmpfs_free_vp(vp); /* @@ -1552,19 +1544,16 @@ relock: * we must free its associated data structures (now that the vnode * is being reclaimed). */ + unlock = true; if (node->tn_links == 0 && (node->tn_vpstate & TMPFS_VNODE_ALLOCATING) == 0) { - MPASS(tm_locked); node->tn_vpstate = TMPFS_VNODE_DOOMED; unlock = !tmpfs_free_node_locked(tmp, node, true); - } else { - unlock = true; } if (unlock) { TMPFS_NODE_UNLOCK(node); - if (tm_locked) - TMPFS_UNLOCK(tmp); + TMPFS_UNLOCK(tmp); } MPASS(vp->v_data == NULL);
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