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f2fs: enhance f2fs_is_checkpoint_ready()'s readability

Browse Source 
This patch changes sematics of f2fs_is_checkpoint_ready()'s return
value as: return true when checkpoint is ready, other return false,
it can improve readability of below conditions.

f2fs_submit_page_write()
...
	if (is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN) ||
				!f2fs_is_checkpoint_ready(sbi))
		__submit_merged_bio(io);

f2fs_balance_fs()
...
	if (!f2fs_is_checkpoint_ready(sbi))
		return;

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2019-08-23 17:58:36 +08:00 committed by Jaegeuk Kim
parent b757f6edbe
commit 00e09c0bcc
7 changed files with 34 additions and 44 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
fs/f2fs/data.c
View File

@ -634,7 +634,7 @@ skip:
goto next;
out:
if (is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN) ||
f2fs_is_checkpoint_ready(sbi))
!f2fs_is_checkpoint_ready(sbi))
__submit_merged_bio(io);
up_write(&io->io_rwsem);
}
@ -2570,9 +2570,10 @@ static int f2fs_write_begin(struct file *file, struct address_space *mapping,
trace_f2fs_write_begin(inode, pos, len, flags);
err = f2fs_is_checkpoint_ready(sbi);
if (err)
if (!f2fs_is_checkpoint_ready(sbi)) {
err = -ENOSPC;
goto fail;
}
if ((f2fs_is_atomic_file(inode) &&
!f2fs_available_free_memory(sbi, INMEM_PAGES)) ||

18
fs/f2fs/file.c
View File

@ -57,9 +57,11 @@ static vm_fault_t f2fs_vm_page_mkwrite(struct vm_fault *vmf)
err = -EIO;
goto err;
}
err = f2fs_is_checkpoint_ready(sbi);
if (err)
if (!f2fs_is_checkpoint_ready(sbi)) {
err = -ENOSPC;
goto err;
}
sb_start_pagefault(inode->i_sb);
@ -1571,9 +1573,8 @@ static long f2fs_fallocate(struct file *file, int mode,
if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
return -EIO;
ret = f2fs_is_checkpoint_ready(F2FS_I_SB(inode));
if (ret)
return ret;
if (!f2fs_is_checkpoint_ready(F2FS_I_SB(inode)))
return -ENOSPC;
/* f2fs only support ->fallocate for regular file */
if (!S_ISREG(inode->i_mode))
@ -3146,13 +3147,10 @@ out:
long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
int ret;
if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp)))))
return -EIO;
ret = f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(filp)));
if (ret)
return ret;
if (!f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(filp))))
return -ENOSPC;
switch (cmd) {
case F2FS_IOC_GETFLAGS:

2
fs/f2fs/inode.c
View File

@ -616,7 +616,7 @@ int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
if (!is_inode_flag_set(inode, FI_DIRTY_INODE))
return 0;
if (f2fs_is_checkpoint_ready(sbi))
if (!f2fs_is_checkpoint_ready(sbi))
return -ENOSPC;
/*

36
fs/f2fs/namei.c
View File

@ -272,9 +272,8 @@ static int f2fs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
if (unlikely(f2fs_cp_error(sbi)))
return -EIO;
err = f2fs_is_checkpoint_ready(sbi);
if (err)
return err;
if (!f2fs_is_checkpoint_ready(sbi))
return -ENOSPC;
err = dquot_initialize(dir);
if (err)
@ -321,9 +320,8 @@ static int f2fs_link(struct dentry *old_dentry, struct inode *dir,
if (unlikely(f2fs_cp_error(sbi)))
return -EIO;
err = f2fs_is_checkpoint_ready(sbi);
if (err)
return err;
if (!f2fs_is_checkpoint_ready(sbi))
return -ENOSPC;
err = fscrypt_prepare_link(old_dentry, dir, dentry);
if (err)
@ -592,9 +590,8 @@ static int f2fs_symlink(struct inode *dir, struct dentry *dentry,
if (unlikely(f2fs_cp_error(sbi)))
return -EIO;
err = f2fs_is_checkpoint_ready(sbi);
if (err)
return err;
if (!f2fs_is_checkpoint_ready(sbi))
return -ENOSPC;
err = fscrypt_prepare_symlink(dir, symname, len, dir->i_sb->s_blocksize,
&disk_link);
@ -724,9 +721,8 @@ static int f2fs_mknod(struct inode *dir, struct dentry *dentry,
if (unlikely(f2fs_cp_error(sbi)))
return -EIO;
err = f2fs_is_checkpoint_ready(sbi);
if (err)
return err;
if (!f2fs_is_checkpoint_ready(sbi))
return -ENOSPC;
err = dquot_initialize(dir);
if (err)
@ -822,13 +818,11 @@ out:
static int f2fs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode)
{
struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
int ret;
if (unlikely(f2fs_cp_error(sbi)))
return -EIO;
ret = f2fs_is_checkpoint_ready(sbi);
if (ret)
return ret;
if (!f2fs_is_checkpoint_ready(sbi))
return -ENOSPC;
if (IS_ENCRYPTED(dir) || DUMMY_ENCRYPTION_ENABLED(sbi)) {
int err = fscrypt_get_encryption_info(dir);
@ -865,9 +859,8 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
if (unlikely(f2fs_cp_error(sbi)))
return -EIO;
err = f2fs_is_checkpoint_ready(sbi);
if (err)
return err;
if (!f2fs_is_checkpoint_ready(sbi))
return -ENOSPC;
if (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
(!projid_eq(F2FS_I(new_dir)->i_projid,
@ -1060,9 +1053,8 @@ static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
if (unlikely(f2fs_cp_error(sbi)))
return -EIO;
err = f2fs_is_checkpoint_ready(sbi);
if (err)
return err;
if (!f2fs_is_checkpoint_ready(sbi))
return -ENOSPC;
if ((is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
!projid_eq(F2FS_I(new_dir)->i_projid,

2
fs/f2fs/segment.c
View File

@ -501,7 +501,7 @@ void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need)
if (need && excess_cached_nats(sbi))
f2fs_balance_fs_bg(sbi);
if (f2fs_is_checkpoint_ready(sbi))
if (!f2fs_is_checkpoint_ready(sbi))
return;
/*

8
fs/f2fs/segment.h
View File

@ -586,13 +586,13 @@ static inline bool has_not_enough_free_secs(struct f2fs_sb_info *sbi,
reserved_sections(sbi) + needed);
}
static inline int f2fs_is_checkpoint_ready(struct f2fs_sb_info *sbi)
static inline bool f2fs_is_checkpoint_ready(struct f2fs_sb_info *sbi)
{
if (likely(!is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
return 0;
return true;
if (likely(!has_not_enough_free_secs(sbi, 0, 0)))
return 0;
return -ENOSPC;
return true;
return false;
}
static inline bool excess_prefree_segs(struct f2fs_sb_info *sbi)

5
fs/f2fs/xattr.c
View File

@ -732,9 +732,8 @@ int f2fs_setxattr(struct inode *inode, int index, const char *name,
if (unlikely(f2fs_cp_error(sbi)))
return -EIO;
err = f2fs_is_checkpoint_ready(sbi);
if (err)
return err;
if (!f2fs_is_checkpoint_ready(sbi))
return -ENOSPC;
err = dquot_initialize(inode);
if (err)