Messages in this thread | | | Date | Thu, 01 Dec 2011 15:39:09 +0800 | From | Tao Ma <> | Subject | Re: [PATCH] Set the initial TRIM information as TRIMMED |
| |
Hi Kyungmin, On 12/01/2011 03:00 PM, Kyungmin Park wrote: > From: Kyungmin Park <kyungmin.park@samsung.com> > > Now trim information doesn't stored at disk so every boot time. it's cleared. > and do the trim all disk groups. > But assume that it's already trimmed at previous time so don't need to trim it again. So set the intial state as trimmed. sorry, I don't get your meaning here. Why can we assume that the group is already trimmed since it isn't stored in the disk?
Thanks Tao > > Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> > --- > diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c > index e2d8be8..97ef342 100644 > --- a/fs/ext4/mballoc.c > +++ b/fs/ext4/mballoc.c > @@ -1098,6 +1098,12 @@ int ext4_mb_init_group(struct super_block *sb, ext4_group_t group) > goto err; > } > mark_page_accessed(page); > + > + /* > + * TRIM information is not stored at disk so set the initial > + * state as trimmed. Since previous time it's already trimmed all > + */ > + EXT4_MB_GRP_SET_TRIMMED(this_grp); > err: > ext4_mb_put_buddy_page_lock(&e4b); > return ret;
| |