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f2fs: split drop_inmem_pages from commit_inmem_pages

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Split drop_inmem_pages from commit_inmem_pages for code readability,
and prepare for the following modification.

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2016-02-06 14:38:29 +08:00 committed by Zhao Wei Liew
parent de89056ac2
commit 6399d80f86
5 changed files with 81 additions and 57 deletions
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3
fs/f2fs/f2fs.h
View file

@ -1877,7 +1877,8 @@ void destroy_node_manager_caches(void);
* segment.c
*/
void register_inmem_page(struct inode *, struct page *);
int commit_inmem_pages(struct inode *, bool);
void drop_inmem_pages(struct inode *);
int commit_inmem_pages(struct inode *);
void f2fs_balance_fs(struct f2fs_sb_info *, bool);
void f2fs_balance_fs_bg(struct f2fs_sb_info *);
int f2fs_issue_flush(struct f2fs_sb_info *);

6
fs/f2fs/file.c
View file

@ -1273,7 +1273,7 @@ static int f2fs_release_file(struct inode *inode, struct file *filp)
{
/* some remained atomic pages should discarded */
if (f2fs_is_atomic_file(inode))
commit_inmem_pages(inode, true);
drop_inmem_pages(inode);
if (f2fs_is_volatile_file(inode)) {
set_inode_flag(F2FS_I(inode), FI_DROP_CACHE);
filemap_fdatawrite(inode->i_mapping);
@ -1397,7 +1397,7 @@ static int f2fs_ioc_commit_atomic_write(struct file *filp)
if (f2fs_is_atomic_file(inode)) {
clear_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE);
ret = commit_inmem_pages(inode, false);
ret = commit_inmem_pages(inode);
if (ret) {
set_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE);
goto err_out;
@ -1460,7 +1460,7 @@ static int f2fs_ioc_abort_volatile_write(struct file *filp)
if (f2fs_is_atomic_file(inode)) {
clear_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE);
commit_inmem_pages(inode, true);
drop_inmem_pages(inode);
}
if (f2fs_is_volatile_file(inode)) {
clear_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE);

2
fs/f2fs/inode.c
View file

@ -323,7 +323,7 @@ void f2fs_evict_inode(struct inode *inode)
/* some remained atomic pages should discarded */
if (f2fs_is_atomic_file(inode))
commit_inmem_pages(inode, true);
drop_inmem_pages(inode);
trace_f2fs_evict_inode(inode);
truncate_inode_pages(&inode->i_data, 0);

125
fs/f2fs/segment.c
View file

@ -250,56 +250,16 @@ void register_inmem_page(struct inode *inode, struct page *page)
trace_f2fs_register_inmem_page(page, INMEM);
}
int commit_inmem_pages(struct inode *inode, bool abort)
static void __revoke_inmem_pages(struct inode *inode,
struct list_head *head)
{
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
struct f2fs_inode_info *fi = F2FS_I(inode);
struct inmem_pages *cur, *tmp;
bool submit_bio = false;
struct f2fs_io_info fio = {
.sbi = sbi,
.type = DATA,
.rw = WRITE_SYNC | REQ_PRIO,
.encrypted_page = NULL,
};
int err = 0;
/*
* The abort is true only when f2fs_evict_inode is called.
* Basically, the f2fs_evict_inode doesn't produce any data writes, so
* that we don't need to call f2fs_balance_fs.
* Otherwise, f2fs_gc in f2fs_balance_fs can wait forever until this
* inode becomes free by iget_locked in f2fs_iget.
*/
if (!abort) {
f2fs_balance_fs(sbi, true);
f2fs_lock_op(sbi);
}
list_for_each_entry_safe(cur, tmp, head, list) {
trace_f2fs_commit_inmem_page(cur->page, INMEM_DROP);
mutex_lock(&fi->inmem_lock);
list_for_each_entry_safe(cur, tmp, &fi->inmem_pages, list) {
lock_page(cur->page);
if (!abort) {
if (cur->page->mapping == inode->i_mapping) {
set_page_dirty(cur->page);
f2fs_wait_on_page_writeback(cur->page, DATA,
true);
if (clear_page_dirty_for_io(cur->page))
inode_dec_dirty_pages(inode);
trace_f2fs_commit_inmem_page(cur->page, INMEM);
fio.page = cur->page;
err = do_write_data_page(&fio);
if (err) {
unlock_page(cur->page);
break;
}
clear_cold_data(cur->page);
submit_bio = true;
}
} else {
ClearPageUptodate(cur->page);
trace_f2fs_commit_inmem_page(cur->page, INMEM_DROP);
}
ClearPageUptodate(cur->page);
set_page_private(cur->page, 0);
ClearPagePrivate(cur->page);
f2fs_put_page(cur->page, 1);
@ -308,14 +268,77 @@ int commit_inmem_pages(struct inode *inode, bool abort)
kmem_cache_free(inmem_entry_slab, cur);
dec_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES);
}
}
void drop_inmem_pages(struct inode *inode)
{
struct f2fs_inode_info *fi = F2FS_I(inode);
mutex_lock(&fi->inmem_lock);
__revoke_inmem_pages(inode, &fi->inmem_pages);
mutex_unlock(&fi->inmem_lock);
}
static int __commit_inmem_pages(struct inode *inode)
{
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
struct f2fs_inode_info *fi = F2FS_I(inode);
struct inmem_pages *cur, *tmp;
struct f2fs_io_info fio = {
.sbi = sbi,
.type = DATA,
.rw = WRITE_SYNC | REQ_PRIO,
.encrypted_page = NULL,
};
bool submit_bio = false;
int err = 0;
list_for_each_entry_safe(cur, tmp, &fi->inmem_pages, list) {
lock_page(cur->page);
if (cur->page->mapping == inode->i_mapping) {
set_page_dirty(cur->page);
f2fs_wait_on_page_writeback(cur->page, DATA, true);
if (clear_page_dirty_for_io(cur->page))
inode_dec_dirty_pages(inode);
trace_f2fs_commit_inmem_page(cur->page, INMEM);
fio.page = cur->page;
err = do_write_data_page(&fio);
if (err) {
unlock_page(cur->page);
break;
}
clear_cold_data(cur->page);
submit_bio = true;
}
set_page_private(cur->page, 0);
ClearPagePrivate(cur->page);
f2fs_put_page(cur->page, 1);
list_del(&cur->list);
kmem_cache_free(inmem_entry_slab, cur);
dec_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES);
}
if (submit_bio)
f2fs_submit_merged_bio_cond(sbi, inode, NULL, 0, DATA, WRITE);
return err;
}
int commit_inmem_pages(struct inode *inode)
{
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
struct f2fs_inode_info *fi = F2FS_I(inode);
int err = 0;
f2fs_balance_fs(sbi, true);
f2fs_lock_op(sbi);
mutex_lock(&fi->inmem_lock);
err = __commit_inmem_pages(inode);
mutex_unlock(&fi->inmem_lock);
if (!abort) {
f2fs_unlock_op(sbi);
if (submit_bio)
f2fs_submit_merged_bio_cond(sbi, inode, NULL, 0,
DATA, WRITE);
}
f2fs_unlock_op(sbi);
return err;
}

2
fs/f2fs/super.c
View file

@ -493,7 +493,7 @@ static int f2fs_drop_inode(struct inode *inode)
/* some remained atomic pages should discarded */
if (f2fs_is_atomic_file(inode))
commit_inmem_pages(inode, true);
drop_inmem_pages(inode);
i_size_write(inode, 0);