mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 20:53:53 +08:00
5cea7647e6
Pull btrfs updates from David Sterba:
"There are some new user features and the usual load of invisible
enhancements or cleanups.
New features:
- extend mount options to specify zlib compression level, -o
compress=zlib:9
- v2 of ioctl "extent to inode mapping", addressing a usecase where
we want to retrieve more but inaccurate results and do the
postprocessing in userspace, aiding defragmentation or
deduplication tools
- populate compression heuristics logic, do data sampling and try to
guess compressibility by: looking for repeated patterns, counting
unique byte values and distribution, calculating Shannon entropy;
this will need more benchmarking and possibly fine tuning, but the
base should be good enough
- enable indexing for btrfs as lower filesystem in overlayfs
- speedup page cache readahead during send on large files
Internal enhancements:
- more sanity checks of b-tree items when reading them from disk
- more EINVAL/EUCLEAN fixups, missing BLK_STS_* conversion, other
errno or error handling fixes
- remove some homegrown IO-related logic, that's been obsoleted by
core block layer changes (batching, plug/unplug, own counters)
- add ref-verify, optional debugging feature to verify extent
reference accounting
- simplify code handling outstanding extents, make it more clear
where and how the accounting is done
- make delalloc reservations per-inode, simplify the code and make
the logic more straightforward
- extensive cleanup of delayed refs code
Notable fixes:
- fix send ioctl on 32bit with 64bit kernel"
* 'for-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (102 commits)
btrfs: Fix bug for misused dev_t when lookup in dev state hash table.
Btrfs: heuristic: add Shannon entropy calculation
Btrfs: heuristic: add byte core set calculation
Btrfs: heuristic: add byte set calculation
Btrfs: heuristic: add detection of repeated data patterns
Btrfs: heuristic: implement sampling logic
Btrfs: heuristic: add bucket and sample counters and other defines
Btrfs: compression: separate heuristic/compression workspaces
btrfs: move btrfs_truncate_block out of trans handle
btrfs: don't call btrfs_start_delalloc_roots in flushoncommit
btrfs: track refs in a rb_tree instead of a list
btrfs: add a comp_refs() helper
btrfs: switch args for comp_*_refs
btrfs: make the delalloc block rsv per inode
btrfs: add tracepoints for outstanding extents mods
Btrfs: rework outstanding_extents
btrfs: increase output size for LOGICAL_INO_V2 ioctl
btrfs: add a flags argument to LOGICAL_INO and call it LOGICAL_INO_V2
btrfs: add a flag to iterate_inodes_from_logical to find all extent refs for uncompressed extents
btrfs: send: remove unused code
...
94 lines
3.0 KiB
C
94 lines
3.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _BTRFS_SYSFS_H_
|
|
#define _BTRFS_SYSFS_H_
|
|
|
|
/*
|
|
* Data exported through sysfs
|
|
*/
|
|
extern u64 btrfs_debugfs_test;
|
|
|
|
enum btrfs_feature_set {
|
|
FEAT_COMPAT,
|
|
FEAT_COMPAT_RO,
|
|
FEAT_INCOMPAT,
|
|
FEAT_MAX
|
|
};
|
|
|
|
#define __INIT_KOBJ_ATTR(_name, _mode, _show, _store) \
|
|
{ \
|
|
.attr = { .name = __stringify(_name), .mode = _mode }, \
|
|
.show = _show, \
|
|
.store = _store, \
|
|
}
|
|
|
|
#define BTRFS_ATTR_RW(_prefix, _name, _show, _store) \
|
|
static struct kobj_attribute btrfs_attr_##_prefix##_##_name = \
|
|
__INIT_KOBJ_ATTR(_name, 0644, _show, _store)
|
|
|
|
#define BTRFS_ATTR(_prefix, _name, _show) \
|
|
static struct kobj_attribute btrfs_attr_##_prefix##_##_name = \
|
|
__INIT_KOBJ_ATTR(_name, 0444, _show, NULL)
|
|
|
|
#define BTRFS_ATTR_PTR(_prefix, _name) \
|
|
(&btrfs_attr_##_prefix##_##_name.attr)
|
|
|
|
|
|
struct btrfs_feature_attr {
|
|
struct kobj_attribute kobj_attr;
|
|
enum btrfs_feature_set feature_set;
|
|
u64 feature_bit;
|
|
};
|
|
|
|
#define BTRFS_FEAT_ATTR(_name, _feature_set, _feature_prefix, _feature_bit) \
|
|
static struct btrfs_feature_attr btrfs_attr_features_##_name = { \
|
|
.kobj_attr = __INIT_KOBJ_ATTR(_name, S_IRUGO, \
|
|
btrfs_feature_attr_show, \
|
|
btrfs_feature_attr_store), \
|
|
.feature_set = _feature_set, \
|
|
.feature_bit = _feature_prefix ##_## _feature_bit, \
|
|
}
|
|
#define BTRFS_FEAT_ATTR_PTR(_name) \
|
|
(&btrfs_attr_features_##_name.kobj_attr.attr)
|
|
|
|
#define BTRFS_FEAT_ATTR_COMPAT(name, feature) \
|
|
BTRFS_FEAT_ATTR(name, FEAT_COMPAT, BTRFS_FEATURE_COMPAT, feature)
|
|
#define BTRFS_FEAT_ATTR_COMPAT_RO(name, feature) \
|
|
BTRFS_FEAT_ATTR(name, FEAT_COMPAT_RO, BTRFS_FEATURE_COMPAT_RO, feature)
|
|
#define BTRFS_FEAT_ATTR_INCOMPAT(name, feature) \
|
|
BTRFS_FEAT_ATTR(name, FEAT_INCOMPAT, BTRFS_FEATURE_INCOMPAT, feature)
|
|
|
|
/* convert from attribute */
|
|
static inline struct btrfs_feature_attr *
|
|
to_btrfs_feature_attr(struct kobj_attribute *a)
|
|
{
|
|
return container_of(a, struct btrfs_feature_attr, kobj_attr);
|
|
}
|
|
|
|
static inline struct kobj_attribute *attr_to_btrfs_attr(struct attribute *attr)
|
|
{
|
|
return container_of(attr, struct kobj_attribute, attr);
|
|
}
|
|
|
|
static inline struct btrfs_feature_attr *
|
|
attr_to_btrfs_feature_attr(struct attribute *attr)
|
|
{
|
|
return to_btrfs_feature_attr(attr_to_btrfs_attr(attr));
|
|
}
|
|
|
|
char *btrfs_printable_features(enum btrfs_feature_set set, u64 flags);
|
|
extern const char * const btrfs_feature_set_names[3];
|
|
extern struct kobj_type space_info_ktype;
|
|
extern struct kobj_type btrfs_raid_ktype;
|
|
int btrfs_sysfs_add_device_link(struct btrfs_fs_devices *fs_devices,
|
|
struct btrfs_device *one_device);
|
|
int btrfs_sysfs_rm_device_link(struct btrfs_fs_devices *fs_devices,
|
|
struct btrfs_device *one_device);
|
|
int btrfs_sysfs_add_fsid(struct btrfs_fs_devices *fs_devs,
|
|
struct kobject *parent);
|
|
int btrfs_sysfs_add_device(struct btrfs_fs_devices *fs_devs);
|
|
void btrfs_sysfs_remove_fsid(struct btrfs_fs_devices *fs_devs);
|
|
void btrfs_sysfs_feature_update(struct btrfs_fs_info *fs_info,
|
|
u64 bit, enum btrfs_feature_set set);
|
|
|
|
#endif /* _BTRFS_SYSFS_H_ */
|