kernel/git/stable/linux.git/fs/btrfs/sysfs.c, branch linux-5.3.y

Merge tag 'for-5.3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

2019-07-16T22:12:56+00:00

Pull btrfs updates from David Sterba: "Highlights: - chunks that have been trimmed and unchanged since last mount are tracked and skipped on repeated trims - use hw assissed crc32c on more arches, speedups if native instructions or optimized implementation is available - the RAID56 incompat bit is automatically removed when the last block group of that type is removed Fixes: - fsync fix for reflink on NODATACOW files that could lead to ENOSPC - fix data loss after inode eviction, renaming it, and fsync it - fix fsync not persisting dentry deletions due to inode evictions - update ctime/mtime/iversion after hole punching - fix compression type validation (reported by KASAN) - send won't be allowed to start when relocation is in progress, this can cause spurious errors or produce incorrect send stream Core: - new tracepoints for space update - tree-checker: better check for end of extents for some tree items - preparatory work for more checksum algorithms - run delayed iput at unlink time and don't push the work to cleaner thread where it's not properly throttled - wrap block mapping to structures and helpers, base for further refactoring - split large files, part 1: - space info handling - block group reservations - delayed refs - delayed allocation - other cleanups and refactoring" * tag 'for-5.3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (103 commits) btrfs: fix memory leak of path on error return path btrfs: move the subvolume reservation stuff out of extent-tree.c btrfs: migrate the delalloc space stuff to it's own home btrfs: migrate btrfs_trans_release_chunk_metadata btrfs: migrate the delayed refs rsv code btrfs: Evaluate io_tree in find_lock_delalloc_range() btrfs: migrate the global_block_rsv helpers to block-rsv.c btrfs: migrate the block-rsv code to block-rsv.c btrfs: stop using block_rsv_release_bytes everywhere btrfs: cleanup the target logic in __btrfs_block_rsv_release btrfs: export __btrfs_block_rsv_release btrfs: export btrfs_block_rsv_add_bytes btrfs: move btrfs_block_rsv definitions into it's own header btrfs: Simplify update of space_info in __reserve_metadata_bytes() btrfs: unexport can_overcommit btrfs: move reserve_metadata_bytes and supporting code to space-info.c btrfs: move dump_space_info to space-info.c btrfs: export block_rsv_use_bytes btrfs: move btrfs_space_info_add_*_bytes to space-info.c btrfs: move the space info update macro to space-info.h ...

btrfs: move space_info to space-info.h

2019-07-02T10:30:51+00:00

Migrate the struct definition and the one helper that's in ctree.h into space-info.h Reviewed-by: Nikolay Borisov Signed-off-by: Josef Bacik Signed-off-by: David Sterba

btrfs: sysfs: Replace default_attrs in ktypes with groups

2019-06-21T13:38:59+00:00

The kobj_type default_attrs field is being replaced by the default_groups field. Replace the default_attrs fields in btrfs_raid_ktype and space_info_ktype with default_groups. Change "raid_attributes" to "raid_attrs", and use the ATTRIBUTE_GROUPS macro to create raid_groups and space_info_groups. Signed-off-by: Kimberly Brown Acked-by: David Sterba Signed-off-by: Greg Kroah-Hartman

btrfs: no need to check return value of debugfs_create functions

2019-06-03T14:27:21+00:00

When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: Chris Mason Cc: Josef Bacik Cc: David Sterba Cc: linux-btrfs@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

btrfs: sysfs: don't leak memory when failing add fsid

2019-05-16T12:31:12+00:00

A failed call to kobject_init_and_add() must be followed by a call to kobject_put(). Currently in the error path when adding fs_devices we are missing this call. This could be fixed by calling btrfs_sysfs_remove_fsid() if btrfs_sysfs_add_fsid() returns an error or by adding a call to kobject_put() directly in btrfs_sysfs_add_fsid(). Here we choose the second option because it prevents the slightly unusual error path handling requirements of kobject from leaking out into btrfs functions. Add a call to kobject_put() in the error path of kobject_add_and_init(). This causes the release method to be called if kobject_init_and_add() fails. open_tree() is the function that calls btrfs_sysfs_add_fsid() and the error code in this function is already written with the assumption that the release method is called during the error path of open_tree() (as seen by the call to btrfs_sysfs_remove_fsid() under the fail_fsdev_sysfs label). Cc: stable@vger.kernel.org # v4.4+ Reviewed-by: Greg Kroah-Hartman Signed-off-by: Tobin C. Harding Reviewed-by: David Sterba Signed-off-by: David Sterba

btrfs: Add sysfs support for metadata_uuid feature

2018-12-17T13:51:37+00:00

Since the metadata_uuid is a new incompat feature it requires the respective sysfs hooks. This patch adds the 'metdata_uuid' feature to be shown if it supported by the kernel. Additionally it adds /sys/fs/btrfs/UUID/metadata_uuid attribute which allows one to read the current metadata_uuid. Signed-off-by: Nikolay Borisov Reviewed-by: David Sterba Signed-off-by: David Sterba

btrfs: prune unused includes

2018-08-06T11:12:43+00:00

Remove includes if none of the interfaces and exports is used in the given source file. Signed-off-by: David Sterba

btrfs: sysfs: Add entry which shows if rmdir can work on subvolumes

2018-05-28T16:23:41+00:00

Deletion of a subvolume by rmdir(2) has become allowed by the 'commit cd2decf640b1 ("btrfs: Allow rmdir(2) to delete an empty subvolume")'. It is a kind of new feature and this commits add a sysfs entry /sys/fs/btrfs/features/rmdir_subvol to indicate the availability of the feature so that a user program (e.g. fstests) can detect it. Prior to this commit, all entries in /sys/fs/btrfs/features are feature which depend on feature bits of superblock (i.e. each feature affects on-disk format) and managed by attribute_group "btrfs_feature_attr_group". For each fs, entries in /sys/fs/btrfs/UUID/features indicate which features are enabled (or can be changed online) for the fs. However, rmdir_subvol feature only depends on kernel module. Therefore new attribute_group "btrfs_static_feature_attr_group" is introduced and sysfs_merge_group() is used to share /sys/fs/btrfs/features directory. Features in "btrfs_static_feature_attr_group" won't be listed in each /sys/fs/btrfs/UUID/features. Signed-off-by: Tomohiro Misono Reviewed-by: David Sterba Signed-off-by: David Sterba

btrfs: sysfs: Use enum/define value for feature array definitions

2018-05-28T16:23:39+00:00

Use existing named values instead of the raw numbers. Signed-off-by: Tomohiro Misono Reviewed-by: David Sterba Signed-off-by: David Sterba

btrfs: rename struct btrfs_fs_devices::list

2018-05-28T16:07:21+00:00

btrfs_fs_devices::list is the list of BTRFS fsid in the kernel, a generic name 'list' makes it's search very difficult, rename it to fs_list. Signed-off-by: Anand Jain Signed-off-by: David Sterba