evie/android_kernel_oneplus_msm8998
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fuse: decrement NR_WRITEBACK_TEMP on the right page

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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>
This commit is contained in:
Miklos Szeredi 2019-01-16 10:27:59 +01:00 • committed by Greg Kroah-Hartman
parent a7dfde0f5b
commit bade8e5f26
1 changed files with 1 additions and 1 deletions

2
fs/fuse/file.c
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@ -1784,7 +1784,7 @@ static bool fuse_writepage_in_flight(struct fuse_req *new_req,
spin_unlock(&fc->lock);
dec_wb_stat(&bdi->wb, WB_WRITEBACK);
dec_zone_page_state(page, NR_WRITEBACK_TEMP);
dec_zone_page_state(new_req->pages[0], NR_WRITEBACK_TEMP);
wb_writeout_inc(&bdi->wb);
fuse_writepage_free(fc, new_req);
fuse_request_free(new_req);