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Message-ID: <20190823095836.28569-3-yuchao0@huawei.com>
Date: Fri, 23 Aug 2019 17:58:36 +0800
From: Chao Yu <yuchao0@...wei.com>
To: <jaegeuk@...nel.org>
CC: <linux-f2fs-devel@...ts.sourceforge.net>,
<linux-kernel@...r.kernel.org>, <chao@...nel.org>,
Chao Yu <yuchao0@...wei.com>
Subject: [PATCH 3/3] f2fs: enhance f2fs_is_checkpoint_ready()'s readability
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@...wei.com>
---
fs/f2fs/data.c | 7 ++++---
fs/f2fs/file.c | 18 ++++++++----------
fs/f2fs/inode.c | 2 +-
fs/f2fs/namei.c | 36 ++++++++++++++----------------------
fs/f2fs/segment.c | 2 +-
fs/f2fs/segment.h | 8 ++++----
fs/f2fs/xattr.c | 5 ++---
7 files changed, 34 insertions(+), 44 deletions(-)
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 769c548e955a..bf648c8c50ad 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -634,7 +634,7 @@ void f2fs_submit_page_write(struct f2fs_io_info *fio)
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);
}
@@ -2571,9 +2571,10 @@ 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)) ||
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 05d60082da3a..97038a9a91e3 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -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);
@@ -1575,9 +1577,8 @@ 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))
@@ -3162,13 +3163,10 @@ static int f2fs_set_volume_name(struct file *filp, unsigned long arg)
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:
diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c
index 88af85e0db62..87214414936b 100644
--- a/fs/f2fs/inode.c
+++ b/fs/f2fs/inode.c
@@ -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;
/*
diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
index 7a2d43a9f1a6..8b02c69df199 100644
--- a/fs/f2fs/namei.c
+++ b/fs/f2fs/namei.c
@@ -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 @@ static int __f2fs_tmpfile(struct inode *dir, struct dentry *dentry,
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,
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index b6f838c055d7..ccee5fb69479 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -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;
/*
diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h
index 38ae95301169..bdcce35be077 100644
--- a/fs/f2fs/segment.h
+++ b/fs/f2fs/segment.h
@@ -593,13 +593,13 @@ 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)
diff --git a/fs/f2fs/xattr.c b/fs/f2fs/xattr.c
index f85c810e33ca..181900af2576 100644
--- a/fs/f2fs/xattr.c
+++ b/fs/f2fs/xattr.c
@@ -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)
--
2.18.0.rc1
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