shithub: gefs

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fs: lock arena list on sync

--- a/fs.c

+++ b/fs.c

@@ -2237,8 +2237,10 @@

 			if(am->halt)

 				ainc(&fs->rdonly);

 			epochstart(id);

+			lock(&fs->mountlk);

 			for(mnt = fs->mounts; mnt != nil; mnt = mnt->next)

 				updatesnap(&mnt->root, mnt->root, mnt->name);

+			unlock(&fs->mountlk);

 			sync();

 			epochend(id);

 			epochclean();

--- a/tree.c

+++ b/tree.c

@@ -1413,14 +1413,15 @@

 	if(s->done)

 		return nil;

-	s->ht = t->ht;

-	if((s->path = calloc(t->ht, sizeof(Scanp))) == nil)

+	if((b = getroot(t, &s->ht)) == nil)

+		return Eio;

+	if((s->path = calloc(s->ht, sizeof(Scanp))) == nil){

+		dropblk(b);

 		return Enomem;

+	}

 	p = s->path;

-	if((b = getblk(t->bp, 0)) == nil)

-		return Eio;

 	p[0].b = b;

-	for(i = 0; i < t->ht; i++){

+	for(i = 0; i < s->ht; i++){

 		p[i].vi = blksearch(b, &s->kv, &v, &same);

 		if(b->type == Tpivot){

 			if(p[i].vi == -1)