Commit 41b6e41f authored by Maxim Patlasov's avatar Maxim Patlasov Committed by Miklos Szeredi
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fuse: writepages: update bdi writeout when deleting secondary request

BDI_WRITTEN counter is used to estimate bdi bandwidth.  It must be
incremented every time as bdi ends page writeback.  No matter whether it
was fulfilled by actual write or by discarding the request (e.g. due to
shrunk i_size).

Note that even before writepages patches, the case "Got truncated off
completely" was handled in fuse_send_writepage() by calling
fuse_writepage_finish() which updated BDI_WRITTEN unconditionally.
Signed-off-by: default avatarMaxim Patlasov <>
Signed-off-by: default avatarMiklos Szeredi <>
parent 6eaf4782
...@@ -1701,11 +1701,14 @@ static bool fuse_writepage_in_flight(struct fuse_req *new_req, ...@@ -1701,11 +1701,14 @@ static bool fuse_writepage_in_flight(struct fuse_req *new_req,
if (old_req->num_pages == 1 && (old_req->state == FUSE_REQ_INIT || if (old_req->num_pages == 1 && (old_req->state == FUSE_REQ_INIT ||
old_req->state == FUSE_REQ_PENDING)) { old_req->state == FUSE_REQ_PENDING)) {
struct backing_dev_info *bdi = page->mapping->backing_dev_info;
copy_highpage(old_req->pages[0], page); copy_highpage(old_req->pages[0], page);
spin_unlock(&fc->lock); spin_unlock(&fc->lock);
dec_bdi_stat(page->mapping->backing_dev_info, BDI_WRITEBACK); dec_bdi_stat(bdi, BDI_WRITEBACK);
dec_zone_page_state(page, NR_WRITEBACK_TEMP); dec_zone_page_state(page, NR_WRITEBACK_TEMP);
fuse_writepage_free(fc, new_req); fuse_writepage_free(fc, new_req);
fuse_request_free(new_req); fuse_request_free(new_req);
goto out; goto out;
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