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f2fs: add ioctl to do gc with target block address

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This patch adds f2fs_ioc_gc_range() to move blocks located in the given
range.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2017-06-15 16:44:42 -07:00
parent a9bcf9bcd0
commit 34dc77ad74
2 changed files with 55 additions and 0 deletions
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8
fs/f2fs/f2fs.h
View File

@ -303,6 +303,8 @@ static inline bool __has_cursum_space(struct f2fs_journal *journal,
struct f2fs_move_range)
#define F2FS_IOC_FLUSH_DEVICE _IOW(F2FS_IOCTL_MAGIC, 10, \
struct f2fs_flush_device)
#define F2FS_IOC_GARBAGE_COLLECT_RANGE _IOW(F2FS_IOCTL_MAGIC, 11, \
struct f2fs_gc_range)
#define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY
#define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY
@ -327,6 +329,12 @@ static inline bool __has_cursum_space(struct f2fs_journal *journal,
#define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION
#endif
struct f2fs_gc_range {
u32 sync;
u64 start;
u64 len;
};
struct f2fs_defragment {
u64 start;
u64 len;

47
fs/f2fs/file.c
View File

@ -1911,6 +1911,50 @@ out:
return ret;
}
static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg)
{
struct inode *inode = file_inode(filp);
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
struct f2fs_gc_range range;
u64 end;
int ret;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg,
sizeof(range)))
return -EFAULT;
if (f2fs_readonly(sbi->sb))
return -EROFS;
ret = mnt_want_write_file(filp);
if (ret)
return ret;
end = range.start + range.len;
if (range.start < MAIN_BLKADDR(sbi) || end >= MAX_BLKADDR(sbi))
return -EINVAL;
do_more:
if (!range.sync) {
if (!mutex_trylock(&sbi->gc_mutex)) {
ret = -EBUSY;
goto out;
}
} else {
mutex_lock(&sbi->gc_mutex);
}
ret = f2fs_gc(sbi, range.sync, true, GET_SEGNO(sbi, range.start));
range.start += sbi->blocks_per_seg;
if (range.start <= end)
goto do_more;
out:
mnt_drop_write_file(filp);
return ret;
}
static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg)
{
struct inode *inode = file_inode(filp);
@ -2355,6 +2399,8 @@ long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
return f2fs_ioc_get_encryption_pwsalt(filp, arg);
case F2FS_IOC_GARBAGE_COLLECT:
return f2fs_ioc_gc(filp, arg);
case F2FS_IOC_GARBAGE_COLLECT_RANGE:
return f2fs_ioc_gc_range(filp, arg);
case F2FS_IOC_WRITE_CHECKPOINT:
return f2fs_ioc_write_checkpoint(filp, arg);
case F2FS_IOC_DEFRAGMENT:
@ -2423,6 +2469,7 @@ long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
case F2FS_IOC_GET_ENCRYPTION_PWSALT:
case F2FS_IOC_GET_ENCRYPTION_POLICY:
case F2FS_IOC_GARBAGE_COLLECT:
case F2FS_IOC_GARBAGE_COLLECT_RANGE:
case F2FS_IOC_WRITE_CHECKPOINT:
case F2FS_IOC_DEFRAGMENT:
case F2FS_IOC_MOVE_RANGE: