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sys/ufs/ffs/ffs_snapshot.c
| Show First 20 Lines • Show All 529 Lines • ▼ Show 20 Lines | #endif | ||||
| snaplistsize = fs->fs_ncg + howmany(fs->fs_cssize, fs->fs_bsize) + | snaplistsize = fs->fs_ncg + howmany(fs->fs_cssize, fs->fs_bsize) + | ||||
| FSMAXSNAP + 1 /* superblock */ + 1 /* last block */ + 1 /* size */; | FSMAXSNAP + 1 /* superblock */ + 1 /* last block */ + 1 /* size */; | ||||
| MNT_ILOCK(mp); | MNT_ILOCK(mp); | ||||
| mp->mnt_kern_flag &= ~MNTK_SUSPENDED; | mp->mnt_kern_flag &= ~MNTK_SUSPENDED; | ||||
| MNT_IUNLOCK(mp); | MNT_IUNLOCK(mp); | ||||
| loop: | loop: | ||||
| MNT_VNODE_FOREACH_ALL(xvp, mp, mvp) { | MNT_VNODE_FOREACH_ALL(xvp, mp, mvp) { | ||||
| if ((xvp->v_usecount == 0 && | if ((xvp->v_usecount == 0 && | ||||
| (xvp->v_iflag & (VI_OWEINACT | VI_DOINGINACT)) == 0) || | ((xvp->v_irflag & VIRF_OWEINACT) == 0 && | ||||
| (xvp->v_iflag & VI_DOINGINACT) == 0)) || | |||||
| xvp->v_type == VNON || | xvp->v_type == VNON || | ||||
| IS_SNAPSHOT(VTOI(xvp))) { | IS_SNAPSHOT(VTOI(xvp))) { | ||||
| VI_UNLOCK(xvp); | VI_UNLOCK(xvp); | ||||
| continue; | continue; | ||||
| } | } | ||||
| /* | /* | ||||
| * We can skip parent directory vnode because it must have | * We can skip parent directory vnode because it must have | ||||
| * this snapshot file in it. | * this snapshot file in it. | ||||
| */ | */ | ||||
| if (xvp == nd.ni_dvp) { | if (xvp == nd.ni_dvp) { | ||||
| VI_UNLOCK(xvp); | VI_UNLOCK(xvp); | ||||
| continue; | continue; | ||||
| } | } | ||||
| vholdl(xvp); | vholdl(xvp); | ||||
| if (vn_lock(xvp, LK_EXCLUSIVE | LK_INTERLOCK) != 0) { | if (vn_lock(xvp, LK_EXCLUSIVE | LK_INTERLOCK) != 0) { | ||||
| MNT_VNODE_FOREACH_ALL_ABORT(mp, mvp); | MNT_VNODE_FOREACH_ALL_ABORT(mp, mvp); | ||||
| vdrop(xvp); | vdrop(xvp); | ||||
| goto loop; | goto loop; | ||||
| } | } | ||||
| VI_LOCK(xvp); | VI_LOCK(xvp); | ||||
| if (xvp->v_usecount == 0 && | if (xvp->v_usecount == 0 && | ||||
| (xvp->v_iflag & (VI_OWEINACT | VI_DOINGINACT)) == 0) { | ((xvp->v_irflag & VIRF_OWEINACT) == 0 && | ||||
| (xvp->v_iflag & VI_DOINGINACT) == 0)) { | |||||
| VI_UNLOCK(xvp); | VI_UNLOCK(xvp); | ||||
| VOP_UNLOCK(xvp); | VOP_UNLOCK(xvp); | ||||
| vdrop(xvp); | vdrop(xvp); | ||||
| continue; | continue; | ||||
| } | } | ||||
| VI_UNLOCK(xvp); | VI_UNLOCK(xvp); | ||||
| #ifdef DIAGNOSTIC | #ifdef DIAGNOSTIC | ||||
| if (snapdebug) | if (snapdebug) | ||||
| ▲ Show 20 Lines • Show All 1,990 Lines • ▼ Show 20 Lines | loop: | ||||
| MNT_VNODE_FOREACH_ALL(vp, mp, mvp) { | MNT_VNODE_FOREACH_ALL(vp, mp, mvp) { | ||||
| /* | /* | ||||
| * IN_LAZYACCESS is checked here without holding any | * IN_LAZYACCESS is checked here without holding any | ||||
| * vnode lock, but this flag is set only while holding | * vnode lock, but this flag is set only while holding | ||||
| * vnode interlock. | * vnode interlock. | ||||
| */ | */ | ||||
| if (vp->v_type == VNON || | if (vp->v_type == VNON || | ||||
| ((VTOI(vp)->i_flag & IN_LAZYACCESS) == 0 && | ((VTOI(vp)->i_flag & IN_LAZYACCESS) == 0 && | ||||
| ((vp->v_iflag & VI_OWEINACT) == 0 || vp->v_usecount > 0))) { | ((vp->v_irflag & VIRF_OWEINACT) == 0 || vp->v_usecount > 0))) { | ||||
| VI_UNLOCK(vp); | VI_UNLOCK(vp); | ||||
| continue; | continue; | ||||
| } | } | ||||
| vholdl(vp); | vholdl(vp); | ||||
| error = vn_lock(vp, LK_EXCLUSIVE | LK_INTERLOCK); | error = vn_lock(vp, LK_EXCLUSIVE | LK_INTERLOCK); | ||||
| if (error != 0) { | if (error != 0) { | ||||
| vdrop(vp); | vdrop(vp); | ||||
| if (error == ENOENT) | if (error == ENOENT) | ||||
| ▲ Show 20 Lines • Show All 139 Lines • Show Last 20 Lines | |||||