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| author | Chao Yu <yuchao0@huawei.com> | 2018-01-11 14:42:30 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2018-01-22 14:56:45 -0800 |
| commit | c4020b2da4c9e84d63e30ce5a85dc287507f0e60 (patch) | |
| tree | b32e846a75532c80a9ed1fa7b921f60669131cfb /fs/f2fs/f2fs.h | |
| parent | 1ad71a27124caf0b68ddd3c92be01aa2b2a72b2a (diff) | |
| download | linux-c4020b2da4c9e84d63e30ce5a85dc287507f0e60.tar.gz | |
f2fs: support F2FS_IOC_PRECACHE_EXTENTS
This patch introduces a new ioctl F2FS_IOC_PRECACHE_EXTENTS to precache
extent info like ext4, in order to gain better performance during
triggering AIO by eliminating synchronous waiting of mapping info.
Referred commit: 7869a4a6c5ca ("ext4: add support for extent pre-caching")
In addition, with newly added extent precache abilitiy, this patch add
to support FIEMAP_FLAG_CACHE in ->fiemap.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/f2fs.h')
| -rw-r--r-- | fs/f2fs/f2fs.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index d5090b4d2633..7a85298a74eb 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -358,6 +358,7 @@ static inline bool __has_cursum_space(struct f2fs_journal *journal, #define F2FS_IOC_GET_FEATURES _IOR(F2FS_IOCTL_MAGIC, 12, __u32) #define F2FS_IOC_SET_PIN_FILE _IOW(F2FS_IOCTL_MAGIC, 13, __u32) #define F2FS_IOC_GET_PIN_FILE _IOR(F2FS_IOCTL_MAGIC, 14, __u32) +#define F2FS_IOC_PRECACHE_EXTENTS _IO(F2FS_IOCTL_MAGIC, 15) #define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY #define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY @@ -553,6 +554,7 @@ struct f2fs_map_blocks { unsigned int m_len; unsigned int m_flags; pgoff_t *m_next_pgofs; /* point next possible non-hole pgofs */ + pgoff_t *m_next_extent; /* point to next possible extent */ int m_seg_type; }; @@ -563,6 +565,7 @@ enum { F2FS_GET_BLOCK_BMAP, F2FS_GET_BLOCK_PRE_DIO, F2FS_GET_BLOCK_PRE_AIO, + F2FS_GET_BLOCK_PRECACHE, }; /* @@ -2564,6 +2567,7 @@ int f2fs_getattr(const struct path *path, struct kstat *stat, int f2fs_setattr(struct dentry *dentry, struct iattr *attr); int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end); void truncate_data_blocks_range(struct dnode_of_data *dn, int count); +int f2fs_precache_extents(struct inode *inode); long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg); long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg); int f2fs_pin_file_control(struct inode *inode, bool inc); |