diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/rwsem.h | 11 | ||||
| -rw-r--r-- | include/trace/events/btrfs.h | 23 | ||||
| -rw-r--r-- | include/uapi/linux/btrfs.h | 13 | ||||
| -rw-r--r-- | include/uapi/linux/xattr.h | 3 |
4 files changed, 39 insertions, 11 deletions
diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h index 0616ffe4570..03f3b05e8ec 100644 --- a/include/linux/rwsem.h +++ b/include/linux/rwsem.h @@ -75,6 +75,17 @@ do { \ } while (0) /* + * This is the same regardless of which rwsem implementation that is being used. + * It is just a heuristic meant to be called by somebody alreadying holding the + * rwsem to see if somebody from an incompatible type is wanting access to the + * lock. + */ +static inline int rwsem_is_contended(struct rw_semaphore *sem) +{ + return !list_empty(&sem->wait_list); +} + +/* * lock for reading */ extern void down_read(struct rw_semaphore *sem); diff --git a/include/trace/events/btrfs.h b/include/trace/events/btrfs.h index 4832d75dcba..3176cdc3293 100644 --- a/include/trace/events/btrfs.h +++ b/include/trace/events/btrfs.h @@ -208,17 +208,18 @@ TRACE_EVENT_CONDITION(btrfs_get_extent, __entry->refs, __entry->compress_type) ); -#define show_ordered_flags(flags) \ - __print_symbolic(flags, \ - { BTRFS_ORDERED_IO_DONE, "IO_DONE" }, \ - { BTRFS_ORDERED_COMPLETE, "COMPLETE" }, \ - { BTRFS_ORDERED_NOCOW, "NOCOW" }, \ - { BTRFS_ORDERED_COMPRESSED, "COMPRESSED" }, \ - { BTRFS_ORDERED_PREALLOC, "PREALLOC" }, \ - { BTRFS_ORDERED_DIRECT, "DIRECT" }, \ - { BTRFS_ORDERED_IOERR, "IOERR" }, \ - { BTRFS_ORDERED_UPDATED_ISIZE, "UPDATED_ISIZE" }, \ - { BTRFS_ORDERED_LOGGED_CSUM, "LOGGED_CSUM" }) +#define show_ordered_flags(flags) \ + __print_flags(flags, "|", \ + { (1 << BTRFS_ORDERED_IO_DONE), "IO_DONE" }, \ + { (1 << BTRFS_ORDERED_COMPLETE), "COMPLETE" }, \ + { (1 << BTRFS_ORDERED_NOCOW), "NOCOW" }, \ + { (1 << BTRFS_ORDERED_COMPRESSED), "COMPRESSED" }, \ + { (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_LOGGED_CSUM), "LOGGED_CSUM" }, \ + { (1 << BTRFS_ORDERED_TRUNCATED), "TRUNCATED" }) DECLARE_EVENT_CLASS(btrfs__ordered_extent, diff --git a/include/uapi/linux/btrfs.h b/include/uapi/linux/btrfs.h index 45e618921c6..1b8a0f4c959 100644 --- a/include/uapi/linux/btrfs.h +++ b/include/uapi/linux/btrfs.h @@ -184,6 +184,12 @@ struct btrfs_ioctl_fs_info_args { __u64 reserved[124]; /* pad to 1k */ }; +struct btrfs_ioctl_feature_flags { + __u64 compat_flags; + __u64 compat_ro_flags; + __u64 incompat_flags; +}; + /* balance control ioctl modes */ #define BTRFS_BALANCE_CTL_PAUSE 1 #define BTRFS_BALANCE_CTL_CANCEL 2 @@ -552,6 +558,7 @@ static inline char *btrfs_err_str(enum btrfs_err_code err_code) #define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, __u64) #define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20, \ struct btrfs_ioctl_space_args) +#define BTRFS_IOC_GLOBAL_RSV _IOR(BTRFS_IOCTL_MAGIC, 20, __u64) #define BTRFS_IOC_START_SYNC _IOR(BTRFS_IOCTL_MAGIC, 24, __u64) #define BTRFS_IOC_WAIT_SYNC _IOW(BTRFS_IOCTL_MAGIC, 22, __u64) #define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \ @@ -606,5 +613,11 @@ static inline char *btrfs_err_str(enum btrfs_err_code err_code) struct btrfs_ioctl_dev_replace_args) #define BTRFS_IOC_FILE_EXTENT_SAME _IOWR(BTRFS_IOCTL_MAGIC, 54, \ struct btrfs_ioctl_same_args) +#define BTRFS_IOC_GET_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \ + struct btrfs_ioctl_feature_flags) +#define BTRFS_IOC_SET_FEATURES _IOW(BTRFS_IOCTL_MAGIC, 57, \ + struct btrfs_ioctl_feature_flags[2]) +#define BTRFS_IOC_GET_SUPPORTED_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \ + struct btrfs_ioctl_feature_flags[3]) #endif /* _UAPI_LINUX_BTRFS_H */ diff --git a/include/uapi/linux/xattr.h b/include/uapi/linux/xattr.h index e4629b93bdd..40bbc04b6f8 100644 --- a/include/uapi/linux/xattr.h +++ b/include/uapi/linux/xattr.h @@ -20,6 +20,9 @@ #define XATTR_MAC_OSX_PREFIX "osx." #define XATTR_MAC_OSX_PREFIX_LEN (sizeof(XATTR_MAC_OSX_PREFIX) - 1) +#define XATTR_BTRFS_PREFIX "btrfs." +#define XATTR_BTRFS_PREFIX_LEN (sizeof(XATTR_BTRFS_PREFIX) - 1) + #define XATTR_SECURITY_PREFIX "security." #define XATTR_SECURITY_PREFIX_LEN (sizeof(XATTR_SECURITY_PREFIX) - 1) |