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Bypass network in lock requests to local server (#4465)

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This makes lock RPCs similar to other RPCs where requests to the local
server bypass the network. Requests to the local lock-subsystem may
bypass the network layer and directly access the locking
data-structures.

This incidentally fixes #4451.
This commit is contained in:
Aditya Manthramurthy
2017-06-05 12:25:04 -07:00
committed by Harshavardhana
parent 2559614bfd
commit 986aa8fabf
7 changed files with 210 additions and 146 deletions
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4
cmd/lock-rpc-server-common.go
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@@ -22,7 +22,7 @@ import (
)
// Similar to removeEntry but only removes an entry only if the lock entry exists in map.
func (l *lockServer) removeEntryIfExists(nlrip nameLockRequesterInfoPair) {
func (l *localLocker) removeEntryIfExists(nlrip nameLockRequesterInfoPair) {
// Check if entry is still in map (could have been removed altogether by 'concurrent' (R)Unlock of last entry)
if lri, ok := l.lockMap[nlrip.name]; ok {
if !l.removeEntry(nlrip.name, nlrip.lri.uid, &lri) {
@@ -38,7 +38,7 @@ func (l *lockServer) removeEntryIfExists(nlrip nameLockRequesterInfoPair) {
// removeEntry either, based on the uid of the lock message, removes a single entry from the
// lockRequesterInfo array or the whole array from the map (in case of a write lock or last read lock)
func (l *lockServer) removeEntry(name, uid string, lri *[]lockRequesterInfo) bool {
func (l *localLocker) removeEntry(name, uid string, lri *[]lockRequesterInfo) bool {
// Find correct entry to remove based on uid.
for index, entry := range *lri {
if entry.uid == uid {