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fs: Use constant kWriteFileMaxChunkSize #32640

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fs: Use constant kWriteFileMaxChunkSize #32640

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11 changes: 6 additions & 5 deletions lib/internal/fs/promises.js
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,11 @@
// See https://github.com/libuv/libuv/pull/1501.
const kIoMaxLength = 2 ** 31 - 1;

// Note: This is different from kReadFileBufferLength used for non-promisified
// fs.readFile.
const kReadFileMaxChunkSize = 2 ** 14;
const kWriteFileMaxChunkSize = 2 ** 14;

const {
MathMax,
MathMin,
Expand Down Expand Up @@ -150,16 +155,12 @@ async function writeFileHandle(filehandle, data, options) {
do {
const { bytesWritten } =
await write(filehandle, data, 0,
MathMin(16384, data.length));
MathMin(kWriteFileMaxChunkSize, data.length));
remaining -= bytesWritten;
data = data.slice(bytesWritten);
} while (remaining > 0);
}

// Note: This is different from kReadFileBufferLength used for non-promisified
// fs.readFile.
const kReadFileMaxChunkSize = 16384;

async function readFileHandle(filehandle, options) {
const statFields = await binding.fstat(filehandle.fd, false, kUsePromises);

Expand Down