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Btrfs: only flush down bios for writeback pages 

The btrfs write_cache_pages call has a flush function so that it submits
the bio it has been building before it waits on any writeback pages.

This adds a check so that flush only happens on writeback pages.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason 2008-11-20 10:46:35 -05:00
parent 43dd729b86
commit 0e6bd956ed
1 changed files with 2 additions and 1 deletions
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1
fs/btrfs/extent_io.c
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@ -2462,6 +2462,7 @@ retry:
} }
if (wbc->sync_mode != WB_SYNC_NONE) { if (wbc->sync_mode != WB_SYNC_NONE) {
if (PageWriteback(page))
flush_fn(data); flush_fn(data);
wait_on_page_writeback(page); wait_on_page_writeback(page);
} }