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| author | Chris Mason <clm@fb.com> | 2014-11-25 16:45:30 +0300 |
|---|---|---|
| committer | Chris Mason <clm@fb.com> | 2014-11-25 16:45:30 +0300 |
| commit | ad27c0dab76a7abc8809ec41ae59cf67de5ea906 (patch) | |
| tree | 5ae495bc5d4d3eafa54c2ca5f7c5e5482516e4ec /fs/btrfs/ctree.h | |
| parent | b38ef71cb102208dffcf4e8524e9d5ec4ec0eaa9 (diff) | |
| parent | a6f69dc8018dbb4ce2009ccba49b53f68c8bdc64 (diff) | |
| download | linux-ad27c0dab76a7abc8809ec41ae59cf67de5ea906.tar.xz | |
Merge branch 'dev/pending-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 50 |
1 files changed, 49 insertions, 1 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 49d956b2cf30..9918ba3ec2b2 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -1407,6 +1407,11 @@ struct btrfs_fs_info { */ u64 last_trans_log_full_commit; unsigned long mount_opt; + /* + * Track requests for actions that need to be done during transaction + * commit (like for some mount options). + */ + unsigned long pending_changes; unsigned long compress_type:4; int commit_interval; /* @@ -2098,7 +2103,6 @@ struct btrfs_ioctl_defrag_range_args { #define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21) #define BTRFS_MOUNT_PANIC_ON_FATAL_ERROR (1 << 22) #define BTRFS_MOUNT_RESCAN_UUID_TREE (1 << 23) -#define BTRFS_MOUNT_CHANGE_INODE_CACHE (1 << 24) #define BTRFS_DEFAULT_COMMIT_INTERVAL (30) #define BTRFS_DEFAULT_MAX_INLINE (8192) @@ -2108,6 +2112,7 @@ struct btrfs_ioctl_defrag_range_args { #define btrfs_raw_test_opt(o, opt) ((o) & BTRFS_MOUNT_##opt) #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \ BTRFS_MOUNT_##opt) + #define btrfs_set_and_info(root, opt, fmt, args...) \ { \ if (!btrfs_test_opt(root, opt)) \ @@ -2123,6 +2128,49 @@ struct btrfs_ioctl_defrag_range_args { } /* + * Requests for changes that need to be done during transaction commit. + * + * Internal mount options that are used for special handling of the real + * mount options (eg. cannot be set during remount and have to be set during + * transaction commit) + */ + +#define BTRFS_PENDING_SET_INODE_MAP_CACHE (0) +#define BTRFS_PENDING_CLEAR_INODE_MAP_CACHE (1) +#define BTRFS_PENDING_COMMIT (2) + +#define btrfs_test_pending(info, opt) \ + test_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) +#define btrfs_set_pending(info, opt) \ + set_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) +#define btrfs_clear_pending(info, opt) \ + clear_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) + +/* + * Helpers for setting pending mount option changes. + * + * Expects corresponding macros + * BTRFS_PENDING_SET_ and CLEAR_ + short mount option name + */ +#define btrfs_set_pending_and_info(info, opt, fmt, args...) \ +do { \ + if (!btrfs_raw_test_opt((info)->mount_opt, opt)) { \ + btrfs_info((info), fmt, ##args); \ + btrfs_set_pending((info), SET_##opt); \ + btrfs_clear_pending((info), CLEAR_##opt); \ + } \ +} while(0) + +#define btrfs_clear_pending_and_info(info, opt, fmt, args...) \ +do { \ + if (btrfs_raw_test_opt((info)->mount_opt, opt)) { \ + btrfs_info((info), fmt, ##args); \ + btrfs_set_pending((info), CLEAR_##opt); \ + btrfs_clear_pending((info), SET_##opt); \ + } \ +} while(0) + +/* * Inode flags */ #define BTRFS_INODE_NODATASUM (1 << 0) |