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23 October 2021, 00:29:24 UTC
Revision 9f557cd8073104b39528794d44e129331ded649f authored by Trond Myklebust on 03 February 2010, 13:27:22 UTC, committed by Trond Myklebust on 03 February 2010, 13:27:22 UTC 
NFS: Fix an Oops when truncating a file
 
The VM/VFS does not allow mapping->a_ops->invalidatepage() to fail.
Unfortunately, nfs_wb_page_cancel() may fail if a fatal signal occurs.
Since the NFS code assumes that the page stays mapped for as long as the
writeback is active, we can end up Oopsing (among other things).

The only safe fix here is to convert nfs_wait_on_request(), so as to make
it uninterruptible (as is already the case with wait_on_page_writeback()).


Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org
1 parent a2c0b9e
History
Tip revision: 9f557cd8073104b39528794d44e129331ded649f authored by Trond Myklebust on 03 February 2010, 13:27:22 UTC
NFS: Fix an Oops when truncating a file
Tip revision: 9f557cd
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