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authorJakob Unterwurzacher2016-07-01 23:29:31 +0200
committerJakob Unterwurzacher2016-07-01 23:32:27 +0200
commitf2b4d57068d13b6dc3de2ccc6550675d11d34cfa (patch)
treeb90d31b0375e41318f2ce879df14f36bff4e3b5e /internal/contentenc
parentae77d1852793c4dd43c8ddd69de574223aecce5e (diff)
fusefrontend: coalesce grows in Truncate()
We were growing the file block-by-block which was pretty inefficient. We now coalesce all the grows into a single Ftruncate. Also simplifies the code! Simplistic benchmark: Before: $ time truncate -s 1000M foo real 0m0.568s After: $ time truncate -s 1000M foo real 0m0.205s
Diffstat (limited to 'internal/contentenc')
-rw-r--r--internal/contentenc/offsets.go1
1 files changed, 1 insertions, 0 deletions
diff --git a/internal/contentenc/offsets.go b/internal/contentenc/offsets.go
index da0551a..256ea26 100644
--- a/internal/contentenc/offsets.go
+++ b/internal/contentenc/offsets.go
@@ -66,6 +66,7 @@ func (be *ContentEnc) PlainSizeToCipherSize(plainSize uint64) uint64 {
}
// Split a plaintext byte range into (possibly partial) blocks
+// Returns an empty slice if length == 0.
func (be *ContentEnc) ExplodePlainRange(offset uint64, length uint64) []intraBlock {
var blocks []intraBlock
var nextBlock intraBlock