Messages in this thread | | | Date | Sat, 12 Jun 2021 21:35:13 +0000 | From | Al Viro <> | Subject | Re: [RFC 4/9] gfs2: Fix mmap + page fault deadlocks (part 1) |
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On Sat, Jun 12, 2021 at 09:05:40PM +0000, Al Viro wrote:
> Is the above an accurate description of the mainline situation there? > In particular, normal read doesn't seem to bother with locks at all. > What exactly are those cluster locks for in O_DIRECT read?
BTW, assuming the lack of contention, how costly is dropping/regaining such cluster lock?
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