src/dedo.go: Remove DB.MmapFlags option

1 files changed, 2 insertions, 9 deletions

diff --git a/src/dedo.go b/src/dedo.go
index cffd891..f6351e3 100644
--- a/src/dedo.go
+++ b/src/dedo.go
@@ -116,10 +116,6 @@ type DB struct {
 	// debugging purposes.
 	StrictMode bool
 
-	// If you want to read the entire database fast, you can set MmapFlag to
-	// syscall.MAP_POPULATE on Linux 2.6.23+ for sequential read-ahead.
-	MmapFlags int
-
 	// MaxBatchSize is the maximum size of a batch. Default value is
 	// copied from DefaultMaxBatchSize in Open.
 	//
@@ -190,9 +186,6 @@ type panicked struct {
 
 // Options represents the options that can be set when opening a database.
 type Options struct {
-	// Sets the DB.MmapFlags flag before memory mapping the file.
-	MmapFlags int
-
 	// InitialMmapSize is the initial mmap size of the database
 	// in bytes. Read transactions won't block write transaction
 	// if the InitialMmapSize is large enough to hold database mmap
@@ -688,7 +681,8 @@ func funlock(db *DB) error {
 // mmap memory maps a DB's data file.
 func mmap(db *DB, sz int) error {
 	// Map the data file to memory.
-	b, err := syscall.Mmap(int(db.file.Fd()), 0, sz, syscall.PROT_READ, syscall.MAP_SHARED|db.MmapFlags)
+	fd := int(db.file.Fd())
+	b, err := syscall.Mmap(fd, 0, sz, syscall.PROT_READ, syscall.MAP_SHARED)
 	if err != nil {
 		return err
 	}
@@ -1843,7 +1837,6 @@ func Open(path string, mode os.FileMode, options *Options) (*DB, error) {
 	if options == nil {
 		options = &Options{}
 	}
-	db.MmapFlags = options.MmapFlags
 
 	// Set default values for later DB operations.
 	db.MaxBatchSize = DefaultMaxBatchSize