remove IPFS_LOW_MEM flag support

* HasBlockBufferSize and provideKeysBufferSize no longer matter as we have an
  infinite in-memory buffer.
* provideWorkersMax now defaults to 6 so changing this to 16 actually _increases
  memory consumption.

bitswap.go

@@ -26,7 +26,6 @@ import (
 	blockstore "github.com/ipfs/go-ipfs-blockstore"
 	delay "github.com/ipfs/go-ipfs-delay"
 	exchange "github.com/ipfs/go-ipfs-exchange-interface"
-	flags "github.com/ipfs/go-ipfs-flags"
 	logging "github.com/ipfs/go-log"
 	metrics "github.com/ipfs/go-metrics-interface"
 	process "github.com/jbenet/goprocess"
@@ -60,14 +59,6 @@ var (
 	metricsBuckets = []float64{1 << 6, 1 << 10, 1 << 14, 1 << 18, 1<<18 + 15, 1 << 22}
 )
 
-func init() {
-	if flags.LowMemMode {
-		HasBlockBufferSize = 64
-		provideKeysBufferSize = 512
-		provideWorkerMax = 16
-	}
-}
-
 var rebroadcastDelay = delay.Fixed(time.Minute)
 
 // New initializes a BitSwap instance that communicates over the provided

go.mod

@@ -12,7 +12,6 @@ require (
 	github.com/ipfs/go-ipfs-blocksutil v0.0.1
 	github.com/ipfs/go-ipfs-delay v0.0.1
 	github.com/ipfs/go-ipfs-exchange-interface v0.0.1
-	github.com/ipfs/go-ipfs-flags v0.0.1
 	github.com/ipfs/go-ipfs-pq v0.0.1
 	github.com/ipfs/go-ipfs-routing v0.0.1
 	github.com/ipfs/go-ipfs-util v0.0.1

go.sum

@@ -70,8 +70,6 @@ github.com/ipfs/go-ipfs-ds-help v0.0.1 h1:QBg+Ts2zgeemK/dB0saiF/ykzRGgfoFMT90Rzo
 github.com/ipfs/go-ipfs-ds-help v0.0.1/go.mod h1:gtP9xRaZXqIQRh1HRpp595KbBEdgqWFxefeVKOV8sxo=
 github.com/ipfs/go-ipfs-exchange-interface v0.0.1 h1:LJXIo9W7CAmugqI+uofioIpRb6rY30GUu7G6LUfpMvM=
 github.com/ipfs/go-ipfs-exchange-interface v0.0.1/go.mod h1:c8MwfHjtQjPoDyiy9cFquVtVHkO9b9Ob3FG91qJnWCM=
-github.com/ipfs/go-ipfs-flags v0.0.1 h1:OH5cEkJYL0QgA+bvD55TNG9ud8HA2Nqaav47b2c/UJk=
-github.com/ipfs/go-ipfs-flags v0.0.1/go.mod h1:RnXBb9WV53GSfTrSDVK61NLTFKvWc60n+K9EgCDh+rA=
 github.com/ipfs/go-ipfs-pq v0.0.1 h1:zgUotX8dcAB/w/HidJh1zzc1yFq6Vm8J7T2F4itj/RU=
 github.com/ipfs/go-ipfs-pq v0.0.1/go.mod h1:LWIqQpqfRG3fNc5XsnIhz/wQ2XXGyugQwls7BgUmUfY=
 github.com/ipfs/go-ipfs-routing v0.0.1 h1:394mZeTLcbM/LDO12PneBYvkZAUA+nRnmC0lAzDXKOY=
@@ -112,11 +110,8 @@ github.com/libp2p/go-conn-security-multistream v0.0.1 h1:XefjAQRHcnUaxKb26RGupTo
 github.com/libp2p/go-conn-security-multistream v0.0.1/go.mod h1:nc9vud7inQ+d6SO0I/6dSWrdMnHnzZNHeyUQqrAJulE=
 github.com/libp2p/go-flow-metrics v0.0.1 h1:0gxuFd2GuK7IIP5pKljLwps6TvcuYgvG7Atqi3INF5s=
 github.com/libp2p/go-flow-metrics v0.0.1/go.mod h1:Iv1GH0sG8DtYN3SVJ2eG221wMiNpZxBdp967ls1g+k8=
-github.com/libp2p/go-libp2p v0.0.1 h1:oEjzhRzymY7NILTMzOKNVOpNZGpcQHrHriWw91pbJNM=
-github.com/libp2p/go-libp2p v0.0.1/go.mod h1:bmRs8I0vwn6iRaVssZnJx/epY6WPSKiLoK1vyle4EX0=
 github.com/libp2p/go-libp2p v0.0.2 h1:+jvgi0Zy3y4TKXJKApchCk3pCBPZf1T54z3+vKie3gw=
 github.com/libp2p/go-libp2p v0.0.2/go.mod h1:Qu8bWqFXiocPloabFGUcVG4kk94fLvfC8mWTDdFC9wE=
-github.com/libp2p/go-libp2p-autonat v0.0.1/go.mod h1:fs71q5Xk+pdnKU014o2iq1RhMs9/PMaG5zXRFNnIIT4=
 github.com/libp2p/go-libp2p-autonat v0.0.2 h1:ilo9QPzNPf1hMkqaPG55yzvhILf5ZtijstJhcii+l3s=
 github.com/libp2p/go-libp2p-autonat v0.0.2/go.mod h1:fs71q5Xk+pdnKU014o2iq1RhMs9/PMaG5zXRFNnIIT4=
 github.com/libp2p/go-libp2p-blankhost v0.0.1 h1:/mZuuiwntNR8RywnCFlGHLKrKLYne+qciBpQXWqp5fk=
@@ -137,8 +132,6 @@ github.com/libp2p/go-libp2p-loggables v0.0.1 h1:HVww9oAnINIxbt69LJNkxD8lnbfgteXR
 github.com/libp2p/go-libp2p-loggables v0.0.1/go.mod h1:lDipDlBNYbpyqyPX/KcoO+eq0sJYEVR2JgOexcivchg=
 github.com/libp2p/go-libp2p-metrics v0.0.1 h1:yumdPC/P2VzINdmcKZd0pciSUCpou+s0lwYCjBbzQZU=
 github.com/libp2p/go-libp2p-metrics v0.0.1/go.mod h1:jQJ95SXXA/K1VZi13h52WZMa9ja78zjyy5rspMsC/08=
-github.com/libp2p/go-libp2p-nat v0.0.1 h1:on/zju7XE+JXc8gH+vTKmIh2UJFC1K8kGnJYluQrlz4=
-github.com/libp2p/go-libp2p-nat v0.0.1/go.mod h1:4L6ajyUIlJvx1Cbh5pc6Ma6vMDpKXf3GgLO5u7W0oQ4=
 github.com/libp2p/go-libp2p-nat v0.0.2 h1:sKI5hiCsGFhuEKdXMsF9mywQu2qhfoIGX6a+VG6zelE=
 github.com/libp2p/go-libp2p-nat v0.0.2/go.mod h1:QrjXQSD5Dj4IJOdEcjHRkWTSomyxRo6HnUkf/TfQpLQ=
 github.com/libp2p/go-libp2p-net v0.0.1 h1:xJ4Vh4yKF/XKb8fd1Ev0ebAGzVjMxXzrxG2kjtU+F5Q=