reduce readahead overheads on tmpfs mmap page faults v2
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- v1 Latest3 patches 0 repliesNew
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/3 | readahead: return early when readahead is disabledmm/ | +6 | 0 replies | |
| 1/3 | readahead: return early when readahead is disabledmm/ | +6 | 0 replies | |
| 2/3 | readahead: reduce unnecessary mmap_miss increasesmm/ | +2 | 0 replies | |
| 2/3 | readahead: reduce unnecessary mmap_miss increasesmm/ | +2 | 0 replies | |
| 3/3 | readahead: trigger mmap sequential readahead on PG_readaheadmm/ | +2 | 0 replies | |
| 3/3 | readahead: trigger mmap sequential readahead on PG_readaheadmm/ | +2 | 0 replies |
Reviews trailers per patch
None of the 6 patches has a Reviewed-by or Acked-by.
| Patch | Tim Chen |
|---|---|
| 1/3 | T-b T-b |
| 1/3 | T-b T-b |
| 2/3 | T-b T-b |
| 2/3 | T-b T-b |
| 3/3 | T-b T-b |
| 3/3 | T-b T-b |
Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.
Cover letter [PATCH 0/3] reduce readahead overheads on tmpfs mmap page faults v2
Andrew,
I would like to update the changelogs for patches 2 and 3. There are no changes to the code. Sorry for the inconvenience.
The original changelog is not accurate: it's solely the ra->mmap_miss updates that caused cache line bouncing on tmpfs. ra->prev_pos won't be updated at all on tmpfs.
Thanks,
Fengguang
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