NFS: Avoid races between writebacks and truncation

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Currently, there is no serialisation between NFS asynchronous writebacks
and truncation at the page level due to the fact that nfs_sync_inode()
cannot lock the pages that it is about to write out.

This means that it is possible to be flushing out data (and calling something
like set_page_writeback()) while the page cache is busy evicting the page.
Oops...

Use the hooks provided in try_to_release_page() to ensure that dirty pages
are always written back to storage before we evict them.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

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This commit is contained in:

Trond Myklebust 2006-03-20 13:44:04 -05:00

parent b92dccf65b

commit cd52ed3553

2 changed files with 21 additions and 2 deletions

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13

fs/nfs/file.c

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10

fs/nfs/pagelist.c

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