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f2fs bugfixes for 3.16

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o fix normal and recovery path for fallocated regions
 o fix error case mishandling
 o recover renamed fsync inodes correctly
 o fix to get out of infinite loops in balance_dirty_pages
 o fix kernel NULL pointer error
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Merge tag 'f2fs-fixes-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

Pull f2fs bugfixes from Jaegeuk Kim:
 "This includes a couple of bug fixes found by xfstests.  In addition,
  one critical bug was reported by Brian Chadwick, which is falling into
  the infinite loop in balance_dirty_pages.  And it turned out due to
  the IO merging policy in f2fs, which was newly merged in 3.16.

   - fix normal and recovery path for fallocated regions
   - fix error case mishandling
   - recover renamed fsync inodes correctly
   - fix to get out of infinite loops in balance_dirty_pages
   - fix kernel NULL pointer error"

* tag 'f2fs-fixes-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs:
  f2fs: avoid to access NULL pointer in issue_flush_thread
  f2fs: check bdi->dirty_exceeded when trying to skip data writes
  f2fs: do checkpoint for the renamed inode
  f2fs: release new entry page correctly in error path of f2fs_rename
  f2fs: fix error path in init_inode_metadata
  f2fs: check lower bound nid value in check_nid_range
  f2fs: remove unused variables in f2fs_sm_info
  f2fs: fix not to allocate unnecessary blocks during fallocate
  f2fs: recover fallocated data and its i_size together
  f2fs: fix to report newly allocate region as extent
This commit is contained in:
Linus Torvalds 2014-07-09 09:46:58 -07:00
commit 191d385f25
9 changed files with 41 additions and 27 deletions
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23
fs/f2fs/data.c
View file

@ -608,8 +608,8 @@ static int __allocate_data_block(struct dnode_of_data *dn)
* b. do not use extent cache for better performance
* c. give the block addresses to blockdev
*/
static int get_data_block(struct inode *inode, sector_t iblock,
struct buffer_head *bh_result, int create)
static int __get_data_block(struct inode *inode, sector_t iblock,
struct buffer_head *bh_result, int create, bool fiemap)
{
struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
unsigned int blkbits = inode->i_sb->s_blocksize_bits;
@ -637,7 +637,7 @@ static int get_data_block(struct inode *inode, sector_t iblock,
err = 0;
goto unlock_out;
}
if (dn.data_blkaddr == NEW_ADDR)
if (dn.data_blkaddr == NEW_ADDR && !fiemap)
goto put_out;
if (dn.data_blkaddr != NULL_ADDR) {
@ -671,7 +671,7 @@ static int get_data_block(struct inode *inode, sector_t iblock,
err = 0;
goto unlock_out;
}
if (dn.data_blkaddr == NEW_ADDR)
if (dn.data_blkaddr == NEW_ADDR && !fiemap)
goto put_out;
end_offset = ADDRS_PER_PAGE(dn.node_page, F2FS_I(inode));
@ -708,10 +708,23 @@ static int get_data_block(struct inode *inode, sector_t iblock,
return err;
}
static int get_data_block(struct inode *inode, sector_t iblock,
struct buffer_head *bh_result, int create)
{
return __get_data_block(inode, iblock, bh_result, create, false);
}
static int get_data_block_fiemap(struct inode *inode, sector_t iblock,
struct buffer_head *bh_result, int create)
{
return __get_data_block(inode, iblock, bh_result, create, true);
}
int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
u64 start, u64 len)
{
return generic_block_fiemap(inode, fieinfo, start, len, get_data_block);
return generic_block_fiemap(inode, fieinfo,
start, len, get_data_block_fiemap);
}
static int f2fs_read_data_page(struct file *file, struct page *page)

2
fs/f2fs/dir.c
View file

@ -376,11 +376,11 @@ static struct page *init_inode_metadata(struct inode *inode,
put_error:
f2fs_put_page(page, 1);
error:
/* once the failed inode becomes a bad inode, i_mode is S_IFREG */
truncate_inode_pages(&inode->i_data, 0);
truncate_blocks(inode, 0);
remove_dirty_dir_inode(inode);
error:
remove_inode_page(inode);
return ERR_PTR(err);
}

6
fs/f2fs/f2fs.h
View file

@ -342,9 +342,6 @@ struct f2fs_sm_info {
struct dirty_seglist_info *dirty_info; /* dirty segment information */
struct curseg_info *curseg_array; /* active segment information */
struct list_head wblist_head; /* list of under-writeback pages */
spinlock_t wblist_lock; /* lock for checkpoint */
block_t seg0_blkaddr; /* block address of 0'th segment */
block_t main_blkaddr; /* start block address of main area */
block_t ssa_blkaddr; /* start block address of SSA area */
@ -644,7 +641,8 @@ static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
*/
static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
{
WARN_ON((nid >= NM_I(sbi)->max_nid));
if (unlikely(nid < F2FS_ROOT_INO(sbi)))
return -EINVAL;
if (unlikely(nid >= NM_I(sbi)->max_nid))
return -EINVAL;
return 0;

12
fs/f2fs/file.c
View file

@ -659,16 +659,19 @@ static int expand_inode_data(struct inode *inode, loff_t offset,
off_start = offset & (PAGE_CACHE_SIZE - 1);
off_end = (offset + len) & (PAGE_CACHE_SIZE - 1);
f2fs_lock_op(sbi);
for (index = pg_start; index <= pg_end; index++) {
struct dnode_of_data dn;
f2fs_lock_op(sbi);
if (index == pg_end && !off_end)
goto noalloc;
set_new_dnode(&dn, inode, NULL, NULL, 0);
ret = f2fs_reserve_block(&dn, index);
f2fs_unlock_op(sbi);
if (ret)
break;
noalloc:
if (pg_start == pg_end)
new_size = offset + len;
else if (index == pg_start && off_start)
@ -683,8 +686,9 @@ static int expand_inode_data(struct inode *inode, loff_t offset,
i_size_read(inode) < new_size) {
i_size_write(inode, new_size);
mark_inode_dirty(inode);
f2fs_write_inode(inode, NULL);
update_inode_page(inode);
}
f2fs_unlock_op(sbi);
return ret;
}

1
fs/f2fs/inode.c
View file

@ -78,6 +78,7 @@ static int do_read_inode(struct inode *inode)
if (check_nid_range(sbi, inode->i_ino)) {
f2fs_msg(inode->i_sb, KERN_ERR, "bad inode number: %lu",
(unsigned long) inode->i_ino);
WARN_ON(1);
return -EINVAL;
}

13
fs/f2fs/namei.c
View file

@ -417,9 +417,6 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
}
f2fs_set_link(new_dir, new_entry, new_page, old_inode);
down_write(&F2FS_I(old_inode)->i_sem);
F2FS_I(old_inode)->i_pino = new_dir->i_ino;
up_write(&F2FS_I(old_inode)->i_sem);
new_inode->i_ctime = CURRENT_TIME;
down_write(&F2FS_I(new_inode)->i_sem);
@ -448,6 +445,10 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
}
}
down_write(&F2FS_I(old_inode)->i_sem);
file_lost_pino(old_inode);
up_write(&F2FS_I(old_inode)->i_sem);
old_inode->i_ctime = CURRENT_TIME;
mark_inode_dirty(old_inode);
@ -457,9 +458,6 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
if (old_dir != new_dir) {
f2fs_set_link(old_inode, old_dir_entry,
old_dir_page, new_dir);
down_write(&F2FS_I(old_inode)->i_sem);
F2FS_I(old_inode)->i_pino = new_dir->i_ino;
up_write(&F2FS_I(old_inode)->i_sem);
update_inode_page(old_inode);
} else {
kunmap(old_dir_page);
@ -474,7 +472,8 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
return 0;
put_out_dir:
f2fs_put_page(new_page, 1);
kunmap(new_page);
f2fs_put_page(new_page, 0);
out_dir:
if (old_dir_entry) {
kunmap(old_dir_page);

2
fs/f2fs/node.c
View file

@ -42,6 +42,8 @@ bool available_free_memory(struct f2fs_sb_info *sbi, int type)
mem_size = (nm_i->nat_cnt * sizeof(struct nat_entry)) >> 12;
res = mem_size < ((val.totalram * nm_i->ram_thresh / 100) >> 2);
} else if (type == DIRTY_DENTS) {
if (sbi->sb->s_bdi->dirty_exceeded)
return false;
mem_size = get_pages(sbi, F2FS_DIRTY_DENTS);
res = mem_size < ((val.totalram * nm_i->ram_thresh / 100) >> 1);
}

5
fs/f2fs/segment.c
View file

@ -272,14 +272,15 @@ int create_flush_cmd_control(struct f2fs_sb_info *sbi)
return -ENOMEM;
spin_lock_init(&fcc->issue_lock);
init_waitqueue_head(&fcc->flush_wait_queue);
sbi->sm_info->cmd_control_info = fcc;
fcc->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi,
"f2fs_flush-%u:%u", MAJOR(dev), MINOR(dev));
if (IS_ERR(fcc->f2fs_issue_flush)) {
err = PTR_ERR(fcc->f2fs_issue_flush);
kfree(fcc);
sbi->sm_info->cmd_control_info = NULL;
return err;
}
sbi->sm_info->cmd_control_info = fcc;
return err;
}
@ -1885,8 +1886,6 @@ int build_segment_manager(struct f2fs_sb_info *sbi)
/* init sm info */
sbi->sm_info = sm_info;
INIT_LIST_HEAD(&sm_info->wblist_head);
spin_lock_init(&sm_info->wblist_lock);
sm_info->seg0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
sm_info->main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
sm_info->segment_count = le32_to_cpu(raw_super->segment_count);

4
fs/f2fs/super.c
View file

@ -689,9 +689,7 @@ static struct inode *f2fs_nfs_get_inode(struct super_block *sb,
struct f2fs_sb_info *sbi = F2FS_SB(sb);
struct inode *inode;
if (unlikely(ino < F2FS_ROOT_INO(sbi)))
return ERR_PTR(-ESTALE);
if (unlikely(ino >= NM_I(sbi)->max_nid))
if (check_nid_range(sbi, ino))
return ERR_PTR(-ESTALE);
/*