From 1d7dd0a76c15cf8c0dffef918a6b6c3dcb6347c4 Mon Sep 17 00:00:00 2001
From: Alex Shumsky <alexthreed@gmail.com>
Date: Thu, 7 Mar 2024 23:33:11 +0300
Subject: [PATCH] fusefrontend: fix excessive file fragmentation on BTRFS

---
 internal/fusefrontend/file.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/internal/fusefrontend/file.go b/internal/fusefrontend/file.go
index 8d0ba01b..0e25de3a 100644
--- a/internal/fusefrontend/file.go
+++ b/internal/fusefrontend/file.go
@@ -316,7 +316,7 @@ func (f *File) doWrite(data []byte, off int64) (uint32, syscall.Errno) {
 	if cOff > math.MaxInt64 {
 		return 0, syscall.EFBIG
 	}
-	if !f.rootNode.args.NoPrealloc {
+	if !f.rootNode.args.NoPrealloc && f.rootNode.quirks&syscallcompat.QuirkBrokenFalloc == 0 {
 		err = syscallcompat.EnospcPrealloc(f.intFd(), int64(cOff), int64(len(ciphertext)))
 		if err != nil {
 			if !syscallcompat.IsENOSPC(err) {