f2fs: compress: reduce one page array alloc and free when write compressed page
Don't alloc new page pointers array to replace old, just use old, introduce
valid_nr_cpages to indicate valid number of page pointers in array, try to
reduce one page array alloc and free when write compress page.
Signed-off-by: Fengnan Chang <changfengnan@vivo.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 9f754aa..d8190e836 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -2987,6 +2987,7 @@ static int f2fs_write_cache_pages(struct address_space *mapping,
.rpages = NULL,
.nr_rpages = 0,
.cpages = NULL,
+ .valid_nr_cpages = 0,
.rbuf = NULL,
.cbuf = NULL,
.rlen = PAGE_SIZE * F2FS_I(inode)->i_cluster_size,
