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| author | Christoph Hellwig <hch@lst.de> | 2017-09-17 21:07:11 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-09-20 06:20:02 (GMT) |
| commit | 772003c6a4282211487c9d33958594d7f2be7dd2 (patch) | |
| tree | b0b6cd99b81fd969f1f31992336690f28eea1ae2 /kernel/acct.c | |
| parent | bb69e8a228a74c9aa7b70f6624e5c4fa1af70533 (diff) | |
| download | linux-772003c6a4282211487c9d33958594d7f2be7dd2.tar.xz | |
xfs: open code end_buffer_async_write in xfs_finish_page_writeback
commit 8353a814f2518dcfa79a5bb77afd0e7dfa391bb1 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/acct.c')
0 files changed, 0 insertions, 0 deletions