From 614def7013574ffcd54019b6df40ac1c0df754af Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Sun, 31 May 2015 13:31:34 -0400 Subject: ext4 crypto: shrink size of the ext4_crypto_ctx structure Some fields are only used when the crypto_ctx is being used on the read path, some are only used on the write path, and some are only used when the structure is on free list. Optimize memory use by using a union. Signed-off-by: Theodore Ts'o --- fs/ext4/page-io.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/ext4/page-io.c') diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c index 5765f88b3904..79636e21d3a2 100644 --- a/fs/ext4/page-io.c +++ b/fs/ext4/page-io.c @@ -84,7 +84,7 @@ static void ext4_finish_bio(struct bio *bio) /* The bounce data pages are unmapped. */ data_page = page; ctx = (struct ext4_crypto_ctx *)page_private(data_page); - page = ctx->control_page; + page = ctx->w.control_page; } #endif -- cgit v1.2.1