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>
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index e7958ab..a0d3818 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -357,6 +357,8 @@
#define F2FS_IOC_GARBAGE_COLLECT_RANGE _IOW(F2FS_IOCTL_MAGIC, 11, \
struct f2fs_gc_range)
#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_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY
#define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY
@@ -591,7 +593,10 @@
unsigned long i_flags; /* keep an inode flags for ioctl */
unsigned char i_advise; /* use to give file attribute hints */
unsigned char i_dir_level; /* use for dentry level for large dir */
- unsigned int i_current_depth; /* use only in directory structure */
+ union {
+ unsigned int i_current_depth; /* only for directory depth */
+ unsigned short i_gc_failures; /* only for regular file */
+ };
unsigned int i_pino; /* parent inode number */
umode_t i_acl_mode; /* keep file acl mode temporarily */
@@ -1140,6 +1145,9 @@
/* threshold for converting bg victims for fg */
u64 fggc_threshold;
+ /* threshold for gc trials on pinned files */
+ u64 gc_pin_file_threshold;
+
/* maximum # of trials to find a victim segment for SSR and GC */
unsigned int max_victim_search;
@@ -2139,6 +2147,7 @@
FI_HOT_DATA, /* indicate file is hot */
FI_EXTRA_ATTR, /* indicate file has extra attribute */
FI_PROJ_INHERIT, /* indicate file inherits projectid */
+ FI_PIN_FILE, /* indicate file should not be gced */
};
static inline void __mark_inode_dirty_flag(struct inode *inode,
@@ -2153,6 +2162,7 @@
return;
case FI_DATA_EXIST:
case FI_INLINE_DOTS:
+ case FI_PIN_FILE:
f2fs_mark_inode_dirty_sync(inode, true);
}
}
@@ -2233,6 +2243,13 @@
f2fs_mark_inode_dirty_sync(inode, true);
}
+static inline void f2fs_i_gc_failures_write(struct inode *inode,
+ unsigned int count)
+{
+ F2FS_I(inode)->i_gc_failures = count;
+ f2fs_mark_inode_dirty_sync(inode, true);
+}
+
static inline void f2fs_i_xnid_write(struct inode *inode, nid_t xnid)
{
F2FS_I(inode)->i_xattr_nid = xnid;
@@ -2261,6 +2278,8 @@
set_bit(FI_INLINE_DOTS, &fi->flags);
if (ri->i_inline & F2FS_EXTRA_ATTR)
set_bit(FI_EXTRA_ATTR, &fi->flags);
+ if (ri->i_inline & F2FS_PIN_FILE)
+ set_bit(FI_PIN_FILE, &fi->flags);
}
static inline void set_raw_inline(struct inode *inode, struct f2fs_inode *ri)
@@ -2279,6 +2298,8 @@
ri->i_inline |= F2FS_INLINE_DOTS;
if (is_inode_flag_set(inode, FI_EXTRA_ATTR))
ri->i_inline |= F2FS_EXTRA_ATTR;
+ if (is_inode_flag_set(inode, FI_PIN_FILE))
+ ri->i_inline |= F2FS_PIN_FILE;
}
static inline int f2fs_has_extra_attr(struct inode *inode)
@@ -2324,6 +2345,11 @@
return is_inode_flag_set(inode, FI_INLINE_DOTS);
}
+static inline bool f2fs_is_pinned_file(struct inode *inode)
+{
+ return is_inode_flag_set(inode, FI_PIN_FILE);
+}
+
static inline bool f2fs_is_atomic_file(struct inode *inode)
{
return is_inode_flag_set(inode, FI_ATOMIC_FILE);
@@ -2578,6 +2604,7 @@
void truncate_data_blocks_range(struct dnode_of_data *dn, int count);
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);
/*
* inode.c