[$] Removing GFP_NOFS
Date:
Wed, 05 Jun 2024 15:48:08 +0000
Description:
The GFP_NOFS flag is meant for kernel memory allocations that
should not cause a call into the filesystems to reclaim memory because there are
already locks held that can potentially cause a deadlock. The "scoped allocation" API is a better choice for filesystems to indicate that they
are holding a lock, so GFP_NOFS has long been on the chopping block , though progress has been slow. In a filesystem-track session at
the 2024 Linux Storage,
Filesystem, Memory Management, and BPF Summit , Matthew Wilcox wanted to discuss how to move kernel filesystems away from the flag with the eventual goal of removing it completely.
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Link to news story:
https://lwn.net/Articles/976355/
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