f2fs: add an ioctl to disable GC for specific file
This patch gives a flag to disable GC on given file, which would be useful, when user wants to keep its block map. It also conducts in-place-update for dontmove file. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim
Родитель
9ac1e2d88d
Коммит
1ad71a2712
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@ -1479,6 +1479,8 @@ static inline bool need_inplace_update(struct f2fs_io_info *fio)
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{
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struct inode *inode = fio->page->mapping->host;
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if (f2fs_is_pinned_file(inode))
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return true;
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if (S_ISDIR(inode->i_mode) || f2fs_is_atomic_file(inode))
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return false;
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if (is_cold_data(fio->page))
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@ -356,6 +356,8 @@ static inline bool __has_cursum_space(struct f2fs_journal *journal,
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#define F2FS_IOC_GARBAGE_COLLECT_RANGE _IOW(F2FS_IOCTL_MAGIC, 11, \
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struct f2fs_gc_range)
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#define F2FS_IOC_GET_FEATURES _IOR(F2FS_IOCTL_MAGIC, 12, __u32)
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#define F2FS_IOC_SET_PIN_FILE _IOW(F2FS_IOCTL_MAGIC, 13, __u32)
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#define F2FS_IOC_GET_PIN_FILE _IOR(F2FS_IOCTL_MAGIC, 14, __u32)
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#define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY
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#define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY
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@ -593,7 +595,10 @@ struct f2fs_inode_info {
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unsigned long i_flags; /* keep an inode flags for ioctl */
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unsigned char i_advise; /* use to give file attribute hints */
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unsigned char i_dir_level; /* use for dentry level for large dir */
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unsigned int i_current_depth; /* use only in directory structure */
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union {
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unsigned int i_current_depth; /* only for directory depth */
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unsigned short i_gc_failures; /* only for regular file */
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};
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unsigned int i_pino; /* parent inode number */
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umode_t i_acl_mode; /* keep file acl mode temporarily */
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@ -1142,6 +1147,9 @@ struct f2fs_sb_info {
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/* threshold for converting bg victims for fg */
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u64 fggc_threshold;
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/* threshold for gc trials on pinned files */
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u64 gc_pin_file_threshold;
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/* maximum # of trials to find a victim segment for SSR and GC */
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unsigned int max_victim_search;
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@ -2141,6 +2149,7 @@ enum {
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FI_HOT_DATA, /* indicate file is hot */
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FI_EXTRA_ATTR, /* indicate file has extra attribute */
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FI_PROJ_INHERIT, /* indicate file inherits projectid */
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FI_PIN_FILE, /* indicate file should not be gced */
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};
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static inline void __mark_inode_dirty_flag(struct inode *inode,
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@ -2155,6 +2164,7 @@ static inline void __mark_inode_dirty_flag(struct inode *inode,
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return;
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case FI_DATA_EXIST:
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case FI_INLINE_DOTS:
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case FI_PIN_FILE:
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f2fs_mark_inode_dirty_sync(inode, true);
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}
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}
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@ -2235,6 +2245,13 @@ static inline void f2fs_i_depth_write(struct inode *inode, unsigned int depth)
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f2fs_mark_inode_dirty_sync(inode, true);
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}
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static inline void f2fs_i_gc_failures_write(struct inode *inode,
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unsigned int count)
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{
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F2FS_I(inode)->i_gc_failures = count;
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f2fs_mark_inode_dirty_sync(inode, true);
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}
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static inline void f2fs_i_xnid_write(struct inode *inode, nid_t xnid)
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{
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F2FS_I(inode)->i_xattr_nid = xnid;
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@ -2263,6 +2280,8 @@ static inline void get_inline_info(struct inode *inode, struct f2fs_inode *ri)
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set_bit(FI_INLINE_DOTS, &fi->flags);
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if (ri->i_inline & F2FS_EXTRA_ATTR)
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set_bit(FI_EXTRA_ATTR, &fi->flags);
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if (ri->i_inline & F2FS_PIN_FILE)
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set_bit(FI_PIN_FILE, &fi->flags);
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}
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static inline void set_raw_inline(struct inode *inode, struct f2fs_inode *ri)
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@ -2281,6 +2300,8 @@ static inline void set_raw_inline(struct inode *inode, struct f2fs_inode *ri)
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ri->i_inline |= F2FS_INLINE_DOTS;
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if (is_inode_flag_set(inode, FI_EXTRA_ATTR))
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ri->i_inline |= F2FS_EXTRA_ATTR;
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if (is_inode_flag_set(inode, FI_PIN_FILE))
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ri->i_inline |= F2FS_PIN_FILE;
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}
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static inline int f2fs_has_extra_attr(struct inode *inode)
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@ -2326,6 +2347,11 @@ static inline int f2fs_has_inline_dots(struct inode *inode)
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return is_inode_flag_set(inode, FI_INLINE_DOTS);
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}
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static inline bool f2fs_is_pinned_file(struct inode *inode)
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{
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return is_inode_flag_set(inode, FI_PIN_FILE);
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}
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static inline bool f2fs_is_atomic_file(struct inode *inode)
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{
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return is_inode_flag_set(inode, FI_ATOMIC_FILE);
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@ -2540,6 +2566,7 @@ int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end);
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void truncate_data_blocks_range(struct dnode_of_data *dn, int count);
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long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
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long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
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int f2fs_pin_file_control(struct inode *inode, bool inc);
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/*
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* inode.c
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@ -2672,6 +2672,83 @@ static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg)
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return 0;
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}
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int f2fs_pin_file_control(struct inode *inode, bool inc)
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{
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struct f2fs_inode_info *fi = F2FS_I(inode);
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struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
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/* Use i_gc_failures for normal file as a risk signal. */
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if (inc)
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f2fs_i_gc_failures_write(inode, fi->i_gc_failures + 1);
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if (fi->i_gc_failures > sbi->gc_pin_file_threshold) {
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f2fs_msg(sbi->sb, KERN_WARNING,
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"%s: Enable GC = ino %lx after %x GC trials\n",
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__func__, inode->i_ino, fi->i_gc_failures);
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clear_inode_flag(inode, FI_PIN_FILE);
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return -EAGAIN;
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}
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return 0;
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}
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static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg)
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{
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struct inode *inode = file_inode(filp);
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__u32 pin;
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int ret = 0;
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if (!inode_owner_or_capable(inode))
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return -EACCES;
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if (get_user(pin, (__u32 __user *)arg))
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return -EFAULT;
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if (!S_ISREG(inode->i_mode))
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return -EINVAL;
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if (f2fs_readonly(F2FS_I_SB(inode)->sb))
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return -EROFS;
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ret = mnt_want_write_file(filp);
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if (ret)
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return ret;
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inode_lock(inode);
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if (!pin) {
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clear_inode_flag(inode, FI_PIN_FILE);
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F2FS_I(inode)->i_gc_failures = 1;
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goto done;
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}
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if (f2fs_pin_file_control(inode, false)) {
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ret = -EAGAIN;
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goto out;
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}
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ret = f2fs_convert_inline_inode(inode);
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if (ret)
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goto out;
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set_inode_flag(inode, FI_PIN_FILE);
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ret = F2FS_I(inode)->i_gc_failures;
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done:
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f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
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out:
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inode_unlock(inode);
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mnt_drop_write_file(filp);
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return ret;
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}
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static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg)
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{
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struct inode *inode = file_inode(filp);
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__u32 pin = 0;
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if (is_inode_flag_set(inode, FI_PIN_FILE))
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pin = F2FS_I(inode)->i_gc_failures;
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return put_user(pin, (u32 __user *)arg);
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}
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long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
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{
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if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp)))))
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@ -2722,6 +2799,10 @@ long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
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return f2fs_ioc_fsgetxattr(filp, arg);
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case F2FS_IOC_FSSETXATTR:
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return f2fs_ioc_fssetxattr(filp, arg);
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case F2FS_IOC_GET_PIN_FILE:
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return f2fs_ioc_get_pin_file(filp, arg);
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case F2FS_IOC_SET_PIN_FILE:
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return f2fs_ioc_set_pin_file(filp, arg);
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default:
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return -ENOTTY;
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}
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@ -2797,6 +2878,8 @@ long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
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case F2FS_IOC_GET_FEATURES:
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case F2FS_IOC_FSGETXATTR:
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case F2FS_IOC_FSSETXATTR:
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case F2FS_IOC_GET_PIN_FILE:
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case F2FS_IOC_SET_PIN_FILE:
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break;
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default:
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return -ENOIOCTLCMD;
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11
fs/f2fs/gc.c
11
fs/f2fs/gc.c
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@ -624,6 +624,11 @@ static void move_data_block(struct inode *inode, block_t bidx,
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if (f2fs_is_atomic_file(inode))
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goto out;
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if (f2fs_is_pinned_file(inode)) {
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f2fs_pin_file_control(inode, true);
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goto out;
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}
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set_new_dnode(&dn, inode, NULL, NULL, 0);
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err = get_dnode_of_data(&dn, bidx, LOOKUP_NODE);
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if (err)
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@ -720,6 +725,11 @@ static void move_data_page(struct inode *inode, block_t bidx, int gc_type,
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if (f2fs_is_atomic_file(inode))
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goto out;
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if (f2fs_is_pinned_file(inode)) {
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if (gc_type == FG_GC)
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f2fs_pin_file_control(inode, true);
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goto out;
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}
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if (gc_type == BG_GC) {
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if (PageWriteback(page))
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@ -1091,6 +1101,7 @@ void build_gc_manager(struct f2fs_sb_info *sbi)
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sbi->fggc_threshold = div64_u64((main_count - ovp_count) *
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BLKS_PER_SEC(sbi), (main_count - resv_count));
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sbi->gc_pin_file_threshold = DEF_GC_FAILED_PINNED_FILES;
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/* give warm/cold data area from slower device */
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if (sbi->s_ndevs && sbi->segs_per_sec == 1)
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@ -20,6 +20,8 @@
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#define LIMIT_INVALID_BLOCK 40 /* percentage over total user space */
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#define LIMIT_FREE_BLOCK 40 /* percentage over invalid + free space */
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#define DEF_GC_FAILED_PINNED_FILES 2048
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/* Search max. number of dirty segments to select a victim segment */
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#define DEF_MAX_VICTIM_SEARCH 4096 /* covers 8GB */
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@ -301,6 +301,7 @@ F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, cp_interval, interval_time[CP_TIME]);
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F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]);
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F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, iostat_enable, iostat_enable);
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F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, readdir_ra, readdir_ra);
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F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_pin_file_thresh, gc_pin_file_threshold);
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#ifdef CONFIG_F2FS_FAULT_INJECTION
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F2FS_RW_ATTR(FAULT_INFO_RATE, f2fs_fault_info, inject_rate, inject_rate);
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F2FS_RW_ATTR(FAULT_INFO_TYPE, f2fs_fault_info, inject_type, inject_type);
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@ -349,6 +350,7 @@ static struct attribute *f2fs_attrs[] = {
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ATTR_LIST(idle_interval),
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ATTR_LIST(iostat_enable),
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ATTR_LIST(readdir_ra),
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ATTR_LIST(gc_pin_file_thresh),
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#ifdef CONFIG_F2FS_FAULT_INJECTION
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ATTR_LIST(inject_rate),
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ATTR_LIST(inject_type),
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@ -212,6 +212,7 @@ struct f2fs_extent {
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#define F2FS_DATA_EXIST 0x08 /* file inline data exist flag */
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#define F2FS_INLINE_DOTS 0x10 /* file having implicit dot dentries */
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#define F2FS_EXTRA_ATTR 0x20 /* file having extra attribute */
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#define F2FS_PIN_FILE 0x40 /* file should not be gced */
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struct f2fs_inode {
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__le16 i_mode; /* file mode */
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@ -229,7 +230,13 @@ struct f2fs_inode {
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__le32 i_ctime_nsec; /* change time in nano scale */
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__le32 i_mtime_nsec; /* modification time in nano scale */
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__le32 i_generation; /* file version (for NFS) */
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union {
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__le32 i_current_depth; /* only for directory depth */
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__le16 i_gc_failures; /*
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* # of gc failures on pinned file.
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* only for regular files.
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*/
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};
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__le32 i_xattr_nid; /* nid to save xattr */
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__le32 i_flags; /* file attributes */
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__le32 i_pino; /* parent inode number */
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