nfs: handle multiple reqs in nfs_page_async_flush

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Change nfs_find_and_lock_request so nfs_page_async_flush can handle multiple
requests in a page. There is only one request for a page the first time
nfs_page_async_flush is called, but if a write or commit fails, async_flush
is called again and there may be multiple requests associated with the page.
The solution is to merge all the requests in a page group into a single
request before calling nfs_pageio_add_request.

Rename nfs_find_and_lock_request to nfs_lock_and_join_requests and
change it to first lock all requests for the page, then cancel and merge
all subrequests into the head request.

Signed-off-by: Weston Andros Adamson <dros@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>

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Weston Andros Adamson 2014-07-11 10:20:48 -04:00 • committed by Trond Myklebust

parent 84d3a9a913

commit d458138353

3 changed files with 235 additions and 25 deletions

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1

fs/nfs/internal.h

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4

fs/nfs/pagelist.c

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265

fs/nfs/write.c

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