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author | Andrew Morton <akpm@osdl.org> | 2006-12-21 11:00:33 -0800 |
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committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-21 11:17:26 -0800 |
commit | 3e67c0987d7567ad666641164a153dca9a43b11d (patch) | |
tree | e8bd583fc8fe6e9e2e8533319a30577c0081f70e /usr | |
parent | 921320210bd2ec4f17053d283355b73048ac0e56 (diff) | |
download | linux-3e67c0987d7567ad666641164a153dca9a43b11d.tar.bz2 |
[PATCH] truncate: clear page dirtiness before running try_to_free_buffers()
truncate presently invalidates the dirty page's buffer_heads then shoots down
the page. But try_to_free_buffers() will now bale out because the page is
dirty.
Net effect: the LRU gets filled with dirty pages which have invalidated
buffer_heads attached. They have no ->mapping and hence cannot be cleaned.
The machine leaks memory at an enormous rate.
Fix this by cleaning the page before running try_to_free_buffers(), so
try_to_free_buffers() can do its work.
Also, remember to do dirty-page-acoounting in cancel_dirty_page() so the
machine won't wedge up trying to write non-existent dirty pages.
Probably still wrong, but now less so.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'usr')
0 files changed, 0 insertions, 0 deletions