Messages in this thread | | | Date | Wed, 28 Apr 2004 22:29:50 -0700 | From | Andrew Morton <> | Subject | Re: pdflush eating a lot of CPU on heavy NFS I/O |
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Andrew Morton <akpm@osdl.org> wrote: > > Now, that redirtying of the inode _should_ have moved the inode off the > s_io list and onto the s_dirty list. But for some reason it looks like it > didn't, so we get stuck in a loop. I need to think about it a bit more.
OK, it looks like nfs_writepages() might have been encountered the congested flag and it baled out without doing anything - the inode is still on the temporary s_io list, and no pages were redirtied, hence the inode wasn't redirtied, hence it remains stuck on the s_io list. The patch I sent will fix that up.
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