From 38d54e5c3f52ecfe52c3108fd5605ef691380c18 Mon Sep 17 00:00:00 2001 From: Joanne Koong Date: Mon, 26 Aug 2024 14:19:04 -0700 Subject: [PATCH] fuse: update stats for pages in dropped aux writeback list BugLink: https://bugs.launchpad.net/bugs/2085849 commit f7790d67785302b3116bbbfda62a5a44524601a3 upstream. In the case where the aux writeback list is dropped (e.g. the pages have been truncated or the connection is broken), the stats for its pages and backing device info need to be updated as well. Fixes: e2653bd53a98 ("fuse: fix leaked aux requests") Signed-off-by: Joanne Koong Reviewed-by: Josef Bacik Cc: # v5.1 Signed-off-by: Miklos Szeredi Signed-off-by: Greg Kroah-Hartman Signed-off-by: Manuel Diewald Signed-off-by: Roxana Nicolescu --- fs/fuse/file.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/fs/fuse/file.c b/fs/fuse/file.c index b9cff9b6ca1b..4b65787a5efe 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -1736,10 +1736,16 @@ __acquires(fi->lock) fuse_writepage_finish(fm, wpa); spin_unlock(&fi->lock); - /* After fuse_writepage_finish() aux request list is private */ + /* After rb_erase() aux request list is private */ for (aux = wpa->next; aux; aux = next) { + struct backing_dev_info *bdi = inode_to_bdi(aux->inode); + next = aux->next; aux->next = NULL; + + dec_wb_stat(&bdi->wb, WB_WRITEBACK); + dec_node_page_state(aux->ia.ap.pages[0], NR_WRITEBACK_TEMP); + wb_writeout_inc(&bdi->wb); fuse_writepage_free(aux); }