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Subject[PATCH 4/5] f2fs: write node pages if checkpoint is not doing
Date
It needs to write node pages if checkpoint is not doing in order to avoid
memory pressure.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
fs/f2fs/node.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 4ea2c47..6f514fb 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1314,10 +1314,12 @@ static int f2fs_write_node_page(struct page *page,
return 0;
}

- if (wbc->for_reclaim)
- goto redirty_out;
-
- down_read(&sbi->node_write);
+ if (wbc->for_reclaim) {
+ if (!down_read_trylock(&sbi->node_write))
+ goto redirty_out;
+ } else {
+ down_read(&sbi->node_write);
+ }
set_page_writeback(page);
write_node_page(sbi, page, &fio, nid, ni.blk_addr, &new_addr);
set_node_addr(sbi, &ni, new_addr, is_fsync_dnode(page));
--
2.1.1


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