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| author |   Christoph Hellwig <hch@lst.de> | 2017-09-02 09:53:41 -0700 |
|---|---|---|
| committer |   Darrick J. Wong <darrick.wong@oracle.com> | 2017-09-03 10:40:45 -0700 |
| commit | 8353a814f2518dcfa79a5bb77afd0e7dfa391bb1 (patch) | |
| tree | c0acfb3c83991b4fba5b98a907a1cba0fe75310c /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | xfs: don't set v3 xflags for v2 inodes (diff) | |
| download | wireguard-linux-8353a814f2518dcfa79a5bb77afd0e7dfa391bb1.tar.xz wireguard-linux-8353a814f2518dcfa79a5bb77afd0e7dfa391bb1.zip | |
xfs: open code end_buffer_async_write in xfs_finish_page_writeback
Our loop in xfs_finish_page_writeback, which iterates over all buffer
heads in a page and then calls end_buffer_async_write, which also
iterates over all buffers in the page to check if any I/O is in flight
is not only inefficient, but also potentially dangerous as
end_buffer_async_write can cause the page and all buffers to be freed.
Replace it with a single loop that does the work of end_buffer_async_write
on a per-page basis.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
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