f2fs: fix to spread f2fs_is_checkpoint_ready()

We missed to call f2fs_is_checkpoint_ready() in several places, it may
allow space allocation even when free space was exhausted during
checkpoint is disabled, fix to add them.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/file.c

@@ -56,6 +56,9 @@ static vm_fault_t f2fs_vm_page_mkwrite(struct vm_fault *vmf)
 		err = -EIO;
 		goto err;
 	}
+	err = f2fs_is_checkpoint_ready(sbi);
+	if (err)
+		goto err;
 
 	sb_start_pagefault(inode->i_sb);
 
@@ -1567,6 +1570,9 @@ 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;
 
 	/* f2fs only support ->fallocate for regular file */
 	if (!S_ISREG(inode->i_mode))
@@ -3062,8 +3068,13 @@ static int f2fs_ioc_resize_fs(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;
 
 	switch (cmd) {
 	case F2FS_IOC_GETFLAGS:

fs/f2fs/namei.c

@@ -801,9 +801,13 @@ 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 (IS_ENCRYPTED(dir) || DUMMY_ENCRYPTION_ENABLED(sbi)) {
 		int err = fscrypt_get_encryption_info(dir);

fs/f2fs/xattr.c

@@ -21,6 +21,7 @@
 #include <linux/posix_acl_xattr.h>
 #include "f2fs.h"
 #include "xattr.h"
+#include "segment.h"
 
 static int f2fs_xattr_generic_get(const struct xattr_handler *handler,
 		struct dentry *unused, struct inode *inode,
@@ -729,6 +730,10 @@ int f2fs_setxattr(struct inode *inode, int index, const char *name,
 	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 	int err;
 
+	err = f2fs_is_checkpoint_ready(sbi);
+	if (err)
+		return err;
+
 	err = dquot_initialize(inode);
 	if (err)
 		return err;