When using MinIO as file storage uploading release attachments causes

[prskr]

Description

When creating a release e.g. with GoReleaser I noticed a memory spike when release artifacts are uploaded.
I had to increase the memory limit to ~3GB for my small self-hosted, personal Gitea instance whereas it normally barely exceeds 300MB.

I enabled the pprof endpoint, collected a heap dump and noticed that:

putObjectMultipartStreamNoLength is the function consuming suddently >1.2GB of RAM although I was only uploading ~50MB of artifacts.

The issues is obviously because the original file size is not passed through the chain so the MinIO client doesn't have access to it and has to fall back reading everything to memory.

I played around with the code and could prepare a (quite easy) fix and already tested it on my private instance and it works.
Will create a PR tomorrow (or so).

Let me know if you need further information :)

Gitea Version

v1.18.3

Can you reproduce the bug on the Gitea demo site?

No

Log Gist

No response

Screenshots

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Git Version

No response

Operating System

No response

How are you running Gitea?

Gitea Helm chart

Database

PostgreSQL