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authorLinus Torvalds <torvalds@linux-foundation.org>2020-03-31 13:00:16 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-03-31 13:00:16 -0700
commit15c981d16d70e8a5be297fa4af07a64ab7e080ed (patch)
tree9487ba1525d75501cd1a3896dac4e6321efd3a55 /include
parent1455c69900c8c6442b182a74087931f4ffb1cac4 (diff)
parent6ff06729c22ec0b7498d900d79cc88cfb8aceaeb (diff)
downloadlinux-15c981d16d70e8a5be297fa4af07a64ab7e080ed.tar.bz2
Merge tag 'for-5.7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs updates from David Sterba: "A number of core changes that make things work better in general, code is simpler and cleaner. Core changes: - per-inode file extent tree, for in memory tracking of contiguous extent ranges to make sure i_size adjustments are accurate - tree root structures are protected by reference counts, replacing SRCU that did not cover some cases - leak detector for tree root structures - per-transaction pinned extent tracking - buffer heads are replaced by bios for super block access - speedup of extent back reference resolution, on an example test scenario the runtime of send went down from a hour to minutes - factor out locking scheme used for subvolume writer and NOCOW exclusion, abstracted as DREW lock, double reader-writer exclusion (allow either readers or writers) - cleanup and abstract extent allocation policies, preparation for zoned device support - make reflink/clone_range work on inline extents - add more cancellation point for relocation, improves long response from 'balance cancel' - add page migration callback for data pages - switch to guid for uuids, with additional cleanups of the interface - make ranged full fsyncs more efficient - removal of obsolete ioctl flag BTRFS_SUBVOL_CREATE_ASYNC - remove b-tree readahead from delayed refs paths, avoiding seek and read unnecessary blocks Features: - v2 of ioctl to delete subvolumes, allowing to delete by id and more future extensions Fixes: - fix qgroup rescan worker that could block umount - fix crash during unmount due to race with delayed inode workers - fix dellaloc flushing logic that could create unnecessary chunks under heavy load - fix missing file extent item for hole after ranged fsync - several fixes in relocation error handling Other: - more documentation of relocation, device replace, space reservations - many random cleanups" * tag 'for-5.7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (210 commits) btrfs: fix missing semaphore unlock in btrfs_sync_file btrfs: use nofs allocations for running delayed items btrfs: sysfs: Use scnprintf() instead of snprintf() btrfs: do not resolve backrefs for roots that are being deleted btrfs: track reloc roots based on their commit root bytenr btrfs: restart relocate_tree_blocks properly btrfs: reloc: reorder reservation before root selection btrfs: do not readahead in build_backref_tree btrfs: do not use readahead for running delayed refs btrfs: Remove async_transid from btrfs_mksubvol/create_subvol/create_snapshot btrfs: Remove transid argument from btrfs_ioctl_snap_create_transid btrfs: Remove BTRFS_SUBVOL_CREATE_ASYNC support btrfs: kill the subvol_srcu btrfs: make btrfs_cleanup_fs_roots use the radix tree lock btrfs: don't take an extra root ref at allocation time btrfs: hold a ref on the root on the dead roots list btrfs: make inodes hold a ref on their roots btrfs: move the root freeing stuff into btrfs_put_root btrfs: move ino_cache_inode dropping out of btrfs_free_fs_root btrfs: make the extent buffer leak check per fs info ...
Diffstat (limited to 'include')
-rw-r--r--include/linux/uuid.h22
-rw-r--r--include/trace/events/btrfs.h6
-rw-r--r--include/uapi/linux/btrfs.h37
3 files changed, 54 insertions, 11 deletions
diff --git a/include/linux/uuid.h b/include/linux/uuid.h
index 0c631e2a73b6..d41b0d3e9474 100644
--- a/include/linux/uuid.h
+++ b/include/linux/uuid.h
@@ -43,6 +43,16 @@ static inline void guid_copy(guid_t *dst, const guid_t *src)
memcpy(dst, src, sizeof(guid_t));
}
+static inline void import_guid(guid_t *dst, const __u8 *src)
+{
+ memcpy(dst, src, sizeof(guid_t));
+}
+
+static inline void export_guid(__u8 *dst, const guid_t *src)
+{
+ memcpy(dst, src, sizeof(guid_t));
+}
+
static inline bool guid_is_null(const guid_t *guid)
{
return guid_equal(guid, &guid_null);
@@ -58,12 +68,23 @@ static inline void uuid_copy(uuid_t *dst, const uuid_t *src)
memcpy(dst, src, sizeof(uuid_t));
}
+static inline void import_uuid(uuid_t *dst, const __u8 *src)
+{
+ memcpy(dst, src, sizeof(uuid_t));
+}
+
+static inline void export_uuid(__u8 *dst, const uuid_t *src)
+{
+ memcpy(dst, src, sizeof(uuid_t));
+}
+
static inline bool uuid_is_null(const uuid_t *uuid)
{
return uuid_equal(uuid, &uuid_null);
}
void generate_random_uuid(unsigned char uuid[16]);
+void generate_random_guid(unsigned char guid[16]);
extern void guid_gen(guid_t *u);
extern void uuid_gen(uuid_t *u);
@@ -77,7 +98,6 @@ int guid_parse(const char *uuid, guid_t *u);
int uuid_parse(const char *uuid, uuid_t *u);
/* backwards compatibility, don't use in new code */
-#define uuid_le_gen(u) guid_gen(u)
#define uuid_le_to_bin(guid, u) guid_parse(guid, u)
static inline int uuid_le_cmp(const guid_t u1, const guid_t u2)
diff --git a/include/trace/events/btrfs.h b/include/trace/events/btrfs.h
index 17088a112ed0..bcbc763b8814 100644
--- a/include/trace/events/btrfs.h
+++ b/include/trace/events/btrfs.h
@@ -81,13 +81,14 @@ TRACE_DEFINE_ENUM(COMMIT_TRANS);
#define show_extent_io_tree_owner(owner) \
__print_symbolic(owner, \
- { IO_TREE_FS_INFO_FREED_EXTENTS0, "FREED_EXTENTS0" }, \
- { IO_TREE_FS_INFO_FREED_EXTENTS1, "FREED_EXTENTS1" }, \
+ { IO_TREE_FS_PINNED_EXTENTS, "PINNED_EXTENTS" }, \
+ { IO_TREE_FS_EXCLUDED_EXTENTS, "EXCLUDED_EXTENTS" }, \
{ IO_TREE_INODE_IO, "INODE_IO" }, \
{ IO_TREE_INODE_IO_FAILURE, "INODE_IO_FAILURE" }, \
{ IO_TREE_RELOC_BLOCKS, "RELOC_BLOCKS" }, \
{ IO_TREE_TRANS_DIRTY_PAGES, "TRANS_DIRTY_PAGES" }, \
{ IO_TREE_ROOT_DIRTY_LOG_PAGES, "ROOT_DIRTY_LOG_PAGES" }, \
+ { IO_TREE_INODE_FILE_EXTENT, "INODE_FILE_EXTENT" }, \
{ IO_TREE_SELFTEST, "SELFTEST" })
#define BTRFS_GROUP_FLAGS \
@@ -468,7 +469,6 @@ DEFINE_EVENT(
{ (1 << BTRFS_ORDERED_PREALLOC), "PREALLOC" }, \
{ (1 << BTRFS_ORDERED_DIRECT), "DIRECT" }, \
{ (1 << BTRFS_ORDERED_IOERR), "IOERR" }, \
- { (1 << BTRFS_ORDERED_UPDATED_ISIZE), "UPDATED_ISIZE" }, \
{ (1 << BTRFS_ORDERED_TRUNCATED), "TRUNCATED" })
diff --git a/include/uapi/linux/btrfs.h b/include/uapi/linux/btrfs.h
index 7a8bc8b920f5..8134924cfc17 100644
--- a/include/uapi/linux/btrfs.h
+++ b/include/uapi/linux/btrfs.h
@@ -36,17 +36,24 @@ struct btrfs_ioctl_vol_args {
#define BTRFS_DEVICE_PATH_NAME_MAX 1024
#define BTRFS_SUBVOL_NAME_MAX 4039
-#define BTRFS_SUBVOL_CREATE_ASYNC (1ULL << 0)
+/*
+ * Deprecated since 5.7:
+ *
+ * BTRFS_SUBVOL_CREATE_ASYNC (1ULL << 0)
+ */
+
#define BTRFS_SUBVOL_RDONLY (1ULL << 1)
#define BTRFS_SUBVOL_QGROUP_INHERIT (1ULL << 2)
#define BTRFS_DEVICE_SPEC_BY_ID (1ULL << 3)
+#define BTRFS_SUBVOL_SPEC_BY_ID (1ULL << 4)
+
#define BTRFS_VOL_ARG_V2_FLAGS_SUPPORTED \
- (BTRFS_SUBVOL_CREATE_ASYNC | \
- BTRFS_SUBVOL_RDONLY | \
+ (BTRFS_SUBVOL_RDONLY | \
BTRFS_SUBVOL_QGROUP_INHERIT | \
- BTRFS_DEVICE_SPEC_BY_ID)
+ BTRFS_DEVICE_SPEC_BY_ID | \
+ BTRFS_SUBVOL_SPEC_BY_ID)
#define BTRFS_FSID_SIZE 16
#define BTRFS_UUID_SIZE 16
@@ -97,16 +104,29 @@ struct btrfs_ioctl_qgroup_limit_args {
};
/*
- * flags for subvolumes
+ * Arguments for specification of subvolumes or devices, supporting by-name or
+ * by-id and flags
*
- * Used by:
- * struct btrfs_ioctl_vol_args_v2.flags
+ * The set of supported flags depends on the ioctl
*
* BTRFS_SUBVOL_RDONLY is also provided/consumed by the following ioctls:
* - BTRFS_IOC_SUBVOL_GETFLAGS
* - BTRFS_IOC_SUBVOL_SETFLAGS
*/
+/* Supported flags for BTRFS_IOC_RM_DEV_V2 */
+#define BTRFS_DEVICE_REMOVE_ARGS_MASK \
+ (BTRFS_DEVICE_SPEC_BY_ID)
+
+/* Supported flags for BTRFS_IOC_SNAP_CREATE_V2 and BTRFS_IOC_SUBVOL_CREATE_V2 */
+#define BTRFS_SUBVOL_CREATE_ARGS_MASK \
+ (BTRFS_SUBVOL_RDONLY | \
+ BTRFS_SUBVOL_QGROUP_INHERIT)
+
+/* Supported flags for BTRFS_IOC_SNAP_DESTROY_V2 */
+#define BTRFS_SUBVOL_DELETE_ARGS_MASK \
+ (BTRFS_SUBVOL_SPEC_BY_ID)
+
struct btrfs_ioctl_vol_args_v2 {
__s64 fd;
__u64 transid;
@@ -121,6 +141,7 @@ struct btrfs_ioctl_vol_args_v2 {
union {
char name[BTRFS_SUBVOL_NAME_MAX + 1];
__u64 devid;
+ __u64 subvolid;
};
};
@@ -949,5 +970,7 @@ enum btrfs_err_code {
struct btrfs_ioctl_get_subvol_rootref_args)
#define BTRFS_IOC_INO_LOOKUP_USER _IOWR(BTRFS_IOCTL_MAGIC, 62, \
struct btrfs_ioctl_ino_lookup_user_args)
+#define BTRFS_IOC_SNAP_DESTROY_V2 _IOW(BTRFS_IOCTL_MAGIC, 63, \
+ struct btrfs_ioctl_vol_args_v2)
#endif /* _UAPI_LINUX_BTRFS_H */