UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

f2fs: use extent cache for dir 

We update extent cache for all user inode of f2fs including dir inode, so this
patch gives another chance to try to get physical address of page from extent
cache for dir inode.

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2015-02-05 18:03:40 +08:00 committed by Jaegeuk Kim
parent 91c5d9bce7
commit cb3bc9ee06
1 changed files with 14 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
fs/f2fs/data.c
View File

@ -806,6 +806,7 @@ struct page *find_data_page(struct inode *inode, pgoff_t index, bool sync)
struct address_space *mapping = inode->i_mapping;
struct dnode_of_data dn;
struct page *page;
struct extent_info ei;
int err;
struct f2fs_io_info fio = {
.type = DATA,
@ -817,6 +818,11 @@ struct page *find_data_page(struct inode *inode, pgoff_t index, bool sync)
return page;
f2fs_put_page(page, 0);
if (f2fs_lookup_extent_cache(inode, index, &ei)) {
dn.data_blkaddr = ei.blk + index - ei.fofs;
goto got_it;
}
set_new_dnode(&dn, inode, NULL, NULL, 0);
err = get_dnode_of_data(&dn, index, LOOKUP_NODE);
if (err)
@ -830,6 +836,7 @@ struct page *find_data_page(struct inode *inode, pgoff_t index, bool sync)
if (unlikely(dn.data_blkaddr == NEW_ADDR))
return ERR_PTR(-EINVAL);
got_it:
page = grab_cache_page(mapping, index);
if (!page)
return ERR_PTR(-ENOMEM);
@ -864,6 +871,7 @@ struct page *get_lock_data_page(struct inode *inode, pgoff_t index)
struct address_space *mapping = inode->i_mapping;
struct dnode_of_data dn;
struct page *page;
struct extent_info ei;
int err;
struct f2fs_io_info fio = {
.type = DATA,
@ -874,6 +882,11 @@ repeat:
if (!page)
return ERR_PTR(-ENOMEM);
if (f2fs_lookup_extent_cache(inode, index, &ei)) {
dn.data_blkaddr = ei.blk + index - ei.fofs;
goto got_it;
}
set_new_dnode(&dn, inode, NULL, NULL, 0);
err = get_dnode_of_data(&dn, index, LOOKUP_NODE);
if (err) {
@ -887,6 +900,7 @@ repeat:
return ERR_PTR(-ENOENT);
}
got_it:
if (PageUptodate(page))
return page;