Fixed flushfs for writback caching.
commit
b0a4566c53
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@ -90,6 +90,29 @@ func (fs *flushFS) barAttributes() fuseops.InodeAttributes {
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}
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}
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// LOCKS_REQUIRED(fs.mu)
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func (fs *flushFS) getAttributes(id fuseops.InodeID) (
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attrs fuseops.InodeAttributes,
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err error) {
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switch id {
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case fuseops.RootInodeID:
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attrs = fs.rootAttributes()
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return
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case fooID:
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attrs = fs.fooAttributes()
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return
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case barID:
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attrs = fs.barAttributes()
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return
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default:
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err = fuse.ENOENT
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return
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}
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}
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////////////////////////////////////////////////////////////////////////
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// FileSystem methods
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////////////////////////////////////////////////////////////////////////
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@ -134,23 +157,20 @@ func (fs *flushFS) GetInodeAttributes(
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fs.mu.Lock()
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defer fs.mu.Unlock()
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switch op.Inode {
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case fuseops.RootInodeID:
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op.Attributes = fs.rootAttributes()
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return
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op.Attributes, err = fs.getAttributes(op.Inode)
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return
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}
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case fooID:
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op.Attributes = fs.fooAttributes()
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return
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func (fs *flushFS) SetInodeAttributes(
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ctx context.Context,
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op *fuseops.SetInodeAttributesOp) (err error) {
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fs.mu.Lock()
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defer fs.mu.Unlock()
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case barID:
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op.Attributes = fs.barAttributes()
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return
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// Ignore any changes and simply return existing attributes.
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op.Attributes, err = fs.getAttributes(op.Inode)
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default:
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err = fuse.ENOENT
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return
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}
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return
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}
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func (fs *flushFS) OpenFile(
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@ -590,6 +590,8 @@ func (t *NoErrorsTest) Mmap_NoMsync_MunmapBeforeClose() {
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syscall.MAP_SHARED)
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AssertEq(nil, err)
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defer syscall.Munmap(data)
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AssertEq("taco", string(data))
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// Modify the contents.
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@ -638,6 +640,8 @@ func (t *NoErrorsTest) Mmap_NoMsync_CloseBeforeMunmap() {
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syscall.MAP_SHARED)
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AssertEq(nil, err)
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defer syscall.Munmap(data)
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AssertEq("taco", string(data))
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// Close the file. We should see a flush.
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@ -682,6 +686,8 @@ func (t *NoErrorsTest) Mmap_WithMsync_MunmapBeforeClose() {
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syscall.MAP_SHARED)
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AssertEq(nil, err)
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defer syscall.Munmap(data)
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AssertEq("taco", string(data))
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// Modify the contents.
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@ -738,6 +744,8 @@ func (t *NoErrorsTest) Mmap_WithMsync_CloseBeforeMunmap() {
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syscall.MAP_SHARED)
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AssertEq(nil, err)
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defer syscall.Munmap(data)
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AssertEq("taco", string(data))
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// Close the file. We should see a flush.
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@ -941,6 +949,7 @@ func (t *FsyncErrorTest) Msync() {
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syscall.MAP_SHARED)
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AssertEq(nil, err)
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defer syscall.Munmap(data)
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// msync the mapping.
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err = msync(data)
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