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Clarify parallel direct writes conditions

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Clarify that paralell direct can only be enabled where the kernel
version supports it, which is 6.2+.

State the two cache.files modes which can support parallel direct writes
in the description.
This commit is contained in:
David Fairbrother 2023-08-26 12:16:41 +01:00
parent 004b616115
commit f4a8105a42
1 changed files with 2 additions and 1 deletions
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README.md
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@ -289,7 +289,8 @@ These options are the same regardless of whether you use them with the
(default: false)
* **parallel-direct-writes=BOOL**: Allow the kernel to dispatch
multiple, parallel (non-extending) write requests for files opened
with `direct_io=true` (if supported by the kernel)
with `cache.files=per-process` (if the process is not in `process-names`)
or `cache.files=off`. (This requires kernel support, and was added in v6.2)
* **direct_io**: deprecated - Bypass page cache. Use `cache.files=off`
instead. (default: false)
* **kernel_cache**: deprecated - Do not invalidate data cache on file