nfsd: rip out the raparms cache

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The raparms cache was set up in order to ensure that we carry readahead
information forward from one RPC call to the next. In other words, it
was set up because each RPC call was forced to open a struct file, then
close it, causing the loss of readahead information that is normally
cached in that struct file, and used to keep the page cache filled when
a user calls read() multiple times on the same file descriptor.

Now that we cache the struct file, and reuse it for all the I/O calls
to a given file by a given user, we no longer have to keep a separate
readahead cache.

Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

...

This commit is contained in:

Jeff Layton 2019-08-18 14:18:56 -04:00 • committed by J. Bruce Fields

parent 6b556ca287

commit 501cb1849f

3 changed files with 1 additions and 167 deletions

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13

fs/nfsd/nfssvc.c

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149

fs/nfsd/vfs.c

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6

fs/nfsd/vfs.h

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