Date: Sun, 19 Jun 2011 09:37:47 GMT From: Ilya Putsikau <ilya@FreeBSD.org> To: Perforce Change Reviews <perforce@FreeBSD.org> Subject: PERFORCE change 194960 for review Message-ID: <201106190937.p5J9blAV070530@skunkworks.freebsd.org>
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http://p4web.freebsd.org/@@194960?ac=10 Change 194960 by ilya@ilya_triton2011 on 2011/06/19 09:37:19 Change node creator to thread id, use &fvdat->creator as msleep ident Set create flags to O_CREAT | O_RDWR Cache name if MAKEENTRY flag set Affected files ... .. //depot/projects/soc2011/ilya_fuse/fuse_module/fuse_node.c#5 edit .. //depot/projects/soc2011/ilya_fuse/fuse_module/fuse_node.h#7 edit .. //depot/projects/soc2011/ilya_fuse/fuse_module/fuse_vnops.c#18 edit Differences ... ==== //depot/projects/soc2011/ilya_fuse/fuse_module/fuse_node.c#5 (text+ko) ==== @@ -46,6 +46,7 @@ } vp->v_type = vtyp; vp->v_data = fvdat; + fvdat->creator = curthread->td_tid; mtx_init(&fvdat->createlock, "fuse node create mutex", NULL, MTX_DEF); sx_init(&fvdat->nodelock, "fuse node sx lock"); sx_init(&fvdat->truncatelock, "fuse node truncate sx lock"); @@ -165,10 +166,9 @@ MPASS(!(cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.')); VTOFUD(*vpp)->parent_nid = VTOI(dvp); } - if (cnp != NULL) { + if (cnp != NULL && (cnp->cn_flags & MAKEENTRY) != 0) { cache_enter(dvp, *vpp, cnp); } - VTOFUD(*vpp)->nlookup++; return 0; ==== //depot/projects/soc2011/ilya_fuse/fuse_module/fuse_node.h#7 (text+ko) ==== @@ -21,7 +21,7 @@ uint64_t parent_nid; struct mtx createlock; - void *creator; + lwpid_t creator; /* XXX: Clean up this multi-flag nonsense. Really. */ int flag; int flags; ==== //depot/projects/soc2011/ilya_fuse/fuse_module/fuse_vnops.c#18 (text+ko) ==== @@ -254,7 +254,7 @@ foi = fdip->indata; foi->mode = mode; - foi->flags = O_RDWR; // XXX: We /always/ creat() like this. + foi->flags = O_CREAT | O_RDWR; memcpy((char *)fdip->indata + sizeof(*foi), cnp->cn_nameptr, cnp->cn_namelen); @@ -342,8 +342,6 @@ #endif } - cache_enter(dvp, *vpp, cnp); - return (0); undo: @@ -1114,7 +1112,7 @@ mtx_lock(&fvdat->createlock); if (fvdat->flag & FN_CREATING) { // check again - if (fvdat->creator == curthread) { + if (fvdat->creator == curthread->td_tid) { /* * For testing the race condition we want to prevent here, @@ -1141,11 +1139,11 @@ fvdat->flag &= ~FN_CREATING; mtx_unlock(&fvdat->createlock); - wakeup((caddr_t)fvdat->creator); // wake up all + wakeup((caddr_t)&fvdat->creator); // wake up all goto ok; /* return 0 */ } else { printf("contender going to sleep\n"); - error = msleep(fvdat->creator, &fvdat->createlock, + error = msleep(&fvdat->creator, &fvdat->createlock, PDROP | PINOD | PCATCH, "fuse_open", 0); /* * msleep will drop the mutex. since we have PDROP specified,
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