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Expose FUSE_ASYNC_DIO in MountConfig #195

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Merged
geertj merged 1 commit into from
Jun 3, 2026
Merged

Expose FUSE_ASYNC_DIO in MountConfig #195

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5 changes: 5 additions & 0 deletions connection.go
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Original file line number Diff line number Diff line change
Expand Up @@ -168,6 +168,7 @@ func (c *Connection) Init() error {
cacheSymlinks := initOp.Flags&fusekernel.InitCacheSymlinks > 0
noOpenSupport := initOp.Flags&fusekernel.InitNoOpenSupport > 0
noOpendirSupport := initOp.Flags&fusekernel.InitNoOpendirSupport > 0
asyncDIO := initOp.Flags&fusekernel.InitAsyncDIO > 0

// Respond to the init op.
initOp.Library = c.protocol
Expand All @@ -183,6 +184,10 @@ func (c *Connection) Init() error {
initOp.Flags |= fusekernel.InitAsyncRead
}

if c.cfg.EnableAsyncDIO && asyncDIO {
initOp.Flags |= fusekernel.InitAsyncDIO
}

// kernel 4.20 increases the max from 32 -> 256
initOp.Flags |= fusekernel.InitMaxPages

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6 changes: 4 additions & 2 deletions mount_config.go
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Expand Up @@ -188,10 +188,12 @@ type MountConfig struct {
// If not set, /proc/mounts will show the filesystem type as fuse/fuseblk.
Subtype string

// Flag to enable async reads that are received from
// the kernel
// Flag to enable async buffered reads
EnableAsyncReads bool

// Flag to enable async direct IO
EnableAsyncDIO bool

// Flag to enable parallel lookup and readdir operations from the
// kernel
// Ref: https://github.com/torvalds/linux/commit/5c672ab3f0ee0f78f7acad183f34db0f8781a200
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