fuse: decrement NR_WRITEBACK_TEMP on the right page
commit a2ebba824106dabe79937a9f29a875f837e1b6d4 upstream.
NR_WRITEBACK_TEMP is accounted on the temporary page in the request, not
the page cache page.
Fixes: 8b284dc472
("fuse: writepages: handle same page rewrites")
Cc: <stable@vger.kernel.org> # v3.13
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1 changed files with 1 additions and 1 deletions
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@ -1784,7 +1784,7 @@ static bool fuse_writepage_in_flight(struct fuse_req *new_req,
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spin_unlock(&fc->lock);
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dec_wb_stat(&bdi->wb, WB_WRITEBACK);
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dec_zone_page_state(page, NR_WRITEBACK_TEMP);
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dec_zone_page_state(new_req->pages[0], NR_WRITEBACK_TEMP);
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wb_writeout_inc(&bdi->wb);
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fuse_writepage_free(fc, new_req);
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fuse_request_free(new_req);
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