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author | Stephen Rothwell <sfr@canb.auug.org.au> | 2022-06-28 16:54:05 +1000 |
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committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2022-06-28 16:54:05 +1000 |
commit | 5f9df76887bf8170e8844f1907c13fbbb30e9c36 (patch) | |
tree | 3b940f7e1c36605af69ffe3a3e9bc8fa53bd12a1 /fs/fs-writeback.c | |
parent | 8f850ad6cf932b8b5125f9585cb397e08403cccd (diff) | |
parent | 84b494dcbcc015419e629ced664d3b737e83336e (diff) | |
download | linux-next-5f9df76887bf8170e8844f1907c13fbbb30e9c36.tar.gz |
# Conflicts:
# include/linux/pagevec.h
Diffstat (limited to 'fs/fs-writeback.c')
-rw-r--r-- | fs/fs-writeback.c | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index 05221366a16d..1cbac56c810b 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -244,15 +244,13 @@ void __inode_attach_wb(struct inode *inode, struct page *page) if (inode_cgwb_enabled(inode)) { struct cgroup_subsys_state *memcg_css; - if (page) { - memcg_css = mem_cgroup_css_from_page(page); - wb = wb_get_create(bdi, memcg_css, GFP_ATOMIC); - } else { - /* must pin memcg_css, see wb_get_create() */ + /* must pin memcg_css, see wb_get_create() */ + if (page) + memcg_css = get_mem_cgroup_css_from_page(page); + else memcg_css = task_get_css(current, memory_cgrp_id); - wb = wb_get_create(bdi, memcg_css, GFP_ATOMIC); - css_put(memcg_css); - } + wb = wb_get_create(bdi, memcg_css, GFP_ATOMIC); + css_put(memcg_css); } if (!wb) @@ -869,16 +867,16 @@ void wbc_account_cgroup_owner(struct writeback_control *wbc, struct page *page, if (!wbc->wb || wbc->no_cgroup_owner) return; - css = mem_cgroup_css_from_page(page); + css = get_mem_cgroup_css_from_page(page); /* dead cgroups shouldn't contribute to inode ownership arbitration */ if (!(css->flags & CSS_ONLINE)) - return; + goto out; id = css->id; if (id == wbc->wb_id) { wbc->wb_bytes += bytes; - return; + goto out; } if (id == wbc->wb_lcand_id) @@ -891,6 +889,9 @@ void wbc_account_cgroup_owner(struct writeback_control *wbc, struct page *page, wbc->wb_tcand_bytes += bytes; else wbc->wb_tcand_bytes -= min(bytes, wbc->wb_tcand_bytes); + +out: + css_put(css); } EXPORT_SYMBOL_GPL(wbc_account_cgroup_owner); |