On Thu, Sep 29, 2011 at 2:56 PM, Tao Ma <tm@xxxxxx> wrote: > Hi Yongqiang, > On 09/29/2011 01:08 PM, Yongqiang Yang wrote: >> This patch adds a delayed extents tree in inode info, so that >> delayed extents can be look up quickly. Without the tree >> delayed extents are identified by looking up page cache. >> >> With the tree, FIEMAP, SEEK_HOLE/DATA, bigalloc and writeout >> path can be optimized a lot. >> >> Signed-off-by: Yongqiang Yang <xiaoqiangnk@xxxxxxxxx> >> --- >> fs/ext4/ext4.h | 5 +++++ >> 1 files changed, 5 insertions(+), 0 deletions(-) >> >> diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h >> index ccfa81f..d3c6b97 100644 >> --- a/fs/ext4/ext4.h >> +++ b/fs/ext4/ext4.h >> @@ -760,6 +760,8 @@ struct ext4_ext_cache { >> __u32 ec_len; /* must be 32bit to return holes */ >> }; >> >> +#include "delayed_extents.h" >> + >> /* >> * fourth extended file system inode data in memory >> */ >> @@ -837,6 +839,9 @@ struct ext4_inode_info { >> struct list_head i_prealloc_list; >> spinlock_t i_prealloc_lock; >> >> + /* delayed extents */ >> + struct ext4_de_tree i_de_tree; >> + > Can we integrate this patch with patch 1/6? > I think it would be beneficial for the reviewer to see both the > definition of the structure and the place you put it. Ok. Thank you for your advice. I will do that in next version. Yongqiang. > > Thanks > Tao >> /* ialloc */ >> ext4_group_t i_last_alloc_group; >> > > -- Best Wishes Yongqiang Yang -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html