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f2fs: introduce NODE_MAPPING for code consistency

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This patch adds NODE_MAPPING which is similar as META_MAPPING introduced by
Gu Zheng.

Cc: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
This commit is contained in:
Jaegeuk Kim 2014-01-21 18:51:16 +09:00
parent 63f5384c9a
commit 4ef51a8fcc
4 changed files with 30 additions and 31 deletions
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2
fs/f2fs/checkpoint.c
View File

@ -771,7 +771,7 @@ static void do_checkpoint(struct f2fs_sb_info *sbi, bool is_umount)
/* wait for previous submitted node/meta pages writeback */
wait_on_all_pages_writeback(sbi);
filemap_fdatawait_range(sbi->node_inode->i_mapping, 0, LONG_MAX);
filemap_fdatawait_range(NODE_MAPPING(sbi), 0, LONG_MAX);
filemap_fdatawait_range(META_MAPPING(sbi), 0, LONG_MAX);
/* update user_block_counts */

4
fs/f2fs/debug.c
View File

@ -52,7 +52,7 @@ static void update_general_status(struct f2fs_sb_info *sbi)
si->free_secs = free_sections(sbi);
si->prefree_count = prefree_segments(sbi);
si->dirty_count = dirty_segments(sbi);
si->node_pages = sbi->node_inode->i_mapping->nrpages;
si->node_pages = NODE_MAPPING(sbi)->nrpages;
si->meta_pages = META_MAPPING(sbi)->nrpages;
si->nats = NM_I(sbi)->nat_cnt;
si->sits = SIT_I(sbi)->dirty_sentries;
@ -166,7 +166,7 @@ get_cache:
/* free nids */
si->cache_mem = NM_I(sbi)->fcnt;
si->cache_mem += NM_I(sbi)->nat_cnt;
npages = sbi->node_inode->i_mapping->nrpages;
npages = NODE_MAPPING(sbi)->nrpages;
si->cache_mem += npages << PAGE_CACHE_SHIFT;
npages = META_MAPPING(sbi)->nrpages;
si->cache_mem += npages << PAGE_CACHE_SHIFT;

5
fs/f2fs/f2fs.h
View File

@ -538,6 +538,11 @@ static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
return sbi->meta_inode->i_mapping;
}
static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
{
return sbi->node_inode->i_mapping;
}
static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi)
{
sbi->s_dirty = 1;

50
fs/f2fs/node.c
View File

@ -681,7 +681,6 @@ fail:
int truncate_inode_blocks(struct inode *inode, pgoff_t from)
{
struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
struct address_space *node_mapping = sbi->node_inode->i_mapping;
int err = 0, cont = 1;
int level, offset[4], noffset[4];
unsigned int nofs = 0;
@ -756,7 +755,7 @@ skip_partial:
if (offset[1] == 0 &&
ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) {
lock_page(page);
if (unlikely(page->mapping != node_mapping)) {
if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
f2fs_put_page(page, 1);
goto restart;
}
@ -842,7 +841,6 @@ struct page *new_node_page(struct dnode_of_data *dn,
unsigned int ofs, struct page *ipage)
{
struct f2fs_sb_info *sbi = F2FS_SB(dn->inode->i_sb);
struct address_space *mapping = sbi->node_inode->i_mapping;
struct node_info old_ni, new_ni;
struct page *page;
int err;
@ -850,7 +848,7 @@ struct page *new_node_page(struct dnode_of_data *dn,
if (unlikely(is_inode_flag_set(F2FS_I(dn->inode), FI_NO_ALLOC)))
return ERR_PTR(-EPERM);
page = grab_cache_page(mapping, dn->nid);
page = grab_cache_page(NODE_MAPPING(sbi), dn->nid);
if (!page)
return ERR_PTR(-ENOMEM);
@ -920,18 +918,17 @@ static int read_node_page(struct page *page, int rw)
*/
void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid)
{
struct address_space *mapping = sbi->node_inode->i_mapping;
struct page *apage;
int err;
apage = find_get_page(mapping, nid);
apage = find_get_page(NODE_MAPPING(sbi), nid);
if (apage && PageUptodate(apage)) {
f2fs_put_page(apage, 0);
return;
}
f2fs_put_page(apage, 0);
apage = grab_cache_page(mapping, nid);
apage = grab_cache_page(NODE_MAPPING(sbi), nid);
if (!apage)
return;
@ -944,11 +941,10 @@ void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid)
struct page *get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid)
{
struct address_space *mapping = sbi->node_inode->i_mapping;
struct page *page;
int err;
repeat:
page = grab_cache_page(mapping, nid);
page = grab_cache_page(NODE_MAPPING(sbi), nid);
if (!page)
return ERR_PTR(-ENOMEM);
@ -963,7 +959,7 @@ repeat:
f2fs_put_page(page, 1);
return ERR_PTR(-EIO);
}
if (unlikely(page->mapping != mapping)) {
if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
f2fs_put_page(page, 1);
goto repeat;
}
@ -980,7 +976,6 @@ got_it:
struct page *get_node_page_ra(struct page *parent, int start)
{
struct f2fs_sb_info *sbi = F2FS_SB(parent->mapping->host->i_sb);
struct address_space *mapping = sbi->node_inode->i_mapping;
struct blk_plug plug;
struct page *page;
int err, i, end;
@ -991,7 +986,7 @@ struct page *get_node_page_ra(struct page *parent, int start)
if (!nid)
return ERR_PTR(-ENOENT);
repeat:
page = grab_cache_page(mapping, nid);
page = grab_cache_page(NODE_MAPPING(sbi), nid);
if (!page)
return ERR_PTR(-ENOMEM);
@ -1016,7 +1011,7 @@ repeat:
blk_finish_plug(&plug);
lock_page(page);
if (unlikely(page->mapping != mapping)) {
if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
f2fs_put_page(page, 1);
goto repeat;
}
@ -1047,7 +1042,6 @@ void sync_inode_page(struct dnode_of_data *dn)
int sync_node_pages(struct f2fs_sb_info *sbi, nid_t ino,
struct writeback_control *wbc)
{
struct address_space *mapping = sbi->node_inode->i_mapping;
pgoff_t index, end;
struct pagevec pvec;
int step = ino ? 2 : 0;
@ -1061,7 +1055,7 @@ next_step:
while (index <= end) {
int i, nr_pages;
nr_pages = pagevec_lookup_tag(&pvec, mapping, &index,
nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index,
PAGECACHE_TAG_DIRTY,
min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1);
if (nr_pages == 0)
@ -1094,7 +1088,7 @@ next_step:
else if (!trylock_page(page))
continue;
if (unlikely(page->mapping != mapping)) {
if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
continue_unlock:
unlock_page(page);
continue;
@ -1121,7 +1115,7 @@ continue_unlock:
set_fsync_mark(page, 0);
set_dentry_mark(page, 0);
}
mapping->a_ops->writepage(page, wbc);
NODE_MAPPING(sbi)->a_ops->writepage(page, wbc);
wrote++;
if (--wbc->nr_to_write == 0)
@ -1148,18 +1142,19 @@ continue_unlock:
int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino)
{
struct address_space *mapping = sbi->node_inode->i_mapping;
pgoff_t index = 0, end = LONG_MAX;
struct pagevec pvec;
int nr_pages;
int ret2 = 0, ret = 0;
pagevec_init(&pvec, 0);
while ((index <= end) &&
(nr_pages = pagevec_lookup_tag(&pvec, mapping, &index,
PAGECACHE_TAG_WRITEBACK,
min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1)) != 0) {
unsigned i;
while (index <= end) {
int i, nr_pages;
nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index,
PAGECACHE_TAG_WRITEBACK,
min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1);
if (nr_pages == 0)
break;
for (i = 0; i < nr_pages; i++) {
struct page *page = pvec.pages[i];
@ -1178,9 +1173,9 @@ int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino)
cond_resched();
}
if (unlikely(test_and_clear_bit(AS_ENOSPC, &mapping->flags)))
if (unlikely(test_and_clear_bit(AS_ENOSPC, &NODE_MAPPING(sbi)->flags)))
ret2 = -ENOSPC;
if (unlikely(test_and_clear_bit(AS_EIO, &mapping->flags)))
if (unlikely(test_and_clear_bit(AS_EIO, &NODE_MAPPING(sbi)->flags)))
ret2 = -EIO;
if (!ret)
ret = ret2;
@ -1538,13 +1533,12 @@ void recover_node_page(struct f2fs_sb_info *sbi, struct page *page,
int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page)
{
struct address_space *mapping = sbi->node_inode->i_mapping;
struct f2fs_inode *src, *dst;
nid_t ino = ino_of_node(page);
struct node_info old_ni, new_ni;
struct page *ipage;
ipage = grab_cache_page(mapping, ino);
ipage = grab_cache_page(NODE_MAPPING(sbi), ino);
if (!ipage)
return -ENOMEM;