From 3c6c2bebef79999b1827041696dc1881e637e3af Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Tue, 17 Mar 2015 17:16:35 -0700 Subject: f2fs: avoid punch_hole overhead when releasing volatile data This patch is to avoid some punch_hole overhead when releasing volatile data. If volatile data was not written yet, we just can make the first page as zero. Signed-off-by: Jaegeuk Kim --- fs/f2fs/inode.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'fs/f2fs/inode.c') diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c index b5087443be41..bb5800969bcc 100644 --- a/fs/f2fs/inode.c +++ b/fs/f2fs/inode.c @@ -51,6 +51,13 @@ static void __get_inode_rdev(struct inode *inode, struct f2fs_inode *ri) } } +static bool __written_first_block(struct f2fs_inode *ri) +{ + if (ri->i_addr[0] != NEW_ADDR && ri->i_addr[0] != NULL_ADDR) + return true; + return false; +} + static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri) { if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { @@ -143,6 +150,9 @@ static int do_read_inode(struct inode *inode) /* get rdev by using inline_info */ __get_inode_rdev(inode, ri); + if (__written_first_block(ri)) + set_inode_flag(F2FS_I(inode), FI_FIRST_BLOCK_WRITTEN); + f2fs_put_page(node_page, 1); stat_inc_inline_inode(inode); -- cgit