pm24.git/fs/configfs, branch master

configfs: improve item creation performance

2024-11-14T06:45:20Z

As the size of a directory increases item creation slows down. Optimizing access to s_children removes this bottleneck. dirents are already pinned into the cache, there is no need to scan the s_children list looking for duplicate Items. The configfs_dirent_exists check is moved to a location where it is called only during subsystem initialization. d_lookup will only need to call configfs_lookup in the case where the item in question is not pinned to dcache. The only items not pinned to dcache are attributes. These are placed at the front of the s_children list, whilst pinned items are inserted at the back. configfs_lookup stops scanning when it encounters the first pinned entry in s_children. The assumption of the above optimizations is that there will be few attributes, but potentially many Items in a given directory. Signed-off-by: Seamus Connor Reviewed-by: Joel Becker Signed-off-by: Christoph Hellwig

configfs: remove unused configfs_hash_and_remove

2024-11-14T06:45:19Z

configfs_hash_and_remove() has been unused since it was added in 2005 by commit 7063fbf22611 ("[PATCH] configfs: User-driven configuration filesystem") Remove it. Signed-off-by: Dr. David Alan Gilbert Signed-off-by: Christoph Hellwig

fs/configfs: Add a callback to determine attribute visibility

2024-06-17T18:42:57Z

In order to support dynamic decisions as to whether an attribute should be created, add a callback that returns a bool to indicate whether the attribute should be displayed. If no callback is registered, the attribute is displayed by default. Co-developed-by: Dan Williams Signed-off-by: Dan Williams Signed-off-by: Tom Lendacky Signed-off-by: Borislav Petkov (AMD) Link: https://lore.kernel.org/r/e555c8740a263fab9f83b2cbb44da1af49a2813c.1717600736.git.thomas.lendacky@amd.com

configfs: convert to new timestamp accessors

2023-10-18T11:26:19Z

Convert to using the new inode timestamp accessor functions. Signed-off-by: Jeff Layton Link: https://lore.kernel.org/r/20231004185347.80880-24-jlayton@kernel.org Signed-off-by: Christian Brauner

configfs: convert to ctime accessor functions

2023-07-13T08:28:05Z

In later patches, we're going to change how the inode's ctime field is used. Switch to using accessor functions instead of raw accesses of inode->i_ctime. Signed-off-by: Jeff Layton Acked-by: Joel Becker Reviewed-by: Jan Kara Message-Id: <20230705190309.579783-30-jlayton@kernel.org> Signed-off-by: Christian Brauner

fs: consolidate duplicate dt_type helpers

2023-04-03T07:23:54Z

There are three copies of the same dt_type helper sprinkled around the tree. Convert them to use the common fs_umode_to_dtype function instead, which has the added advantage of properly returning DT_UNKNOWN when given a mode that contains an unrecognized type. Cc: Chuck Lever Cc: Phillip Potter Suggested-by: Christian Brauner Signed-off-by: Jeff Layton Acked-by: Greg Kroah-Hartman Reviewed-by: Christian Brauner Message-Id: <20230330104144.75547-1-jlayton@kernel.org> Signed-off-by: Christian Brauner

fs: port ->permission() to pass mnt_idmap

2023-01-19T08:24:28Z

Convert to struct mnt_idmap. Last cycle we merged the necessary infrastructure in 256c8aed2b42 ("fs: introduce dedicated idmap type for mounts"). This is just the conversion to struct mnt_idmap. Currently we still pass around the plain namespace that was attached to a mount. This is in general pretty convenient but it makes it easy to conflate namespaces that are relevant on the filesystem with namespaces that are relevent on the mount level. Especially for non-vfs developers without detailed knowledge in this area this can be a potential source for bugs. Once the conversion to struct mnt_idmap is done all helpers down to the really low-level helpers will take a struct mnt_idmap argument instead of two namespace arguments. This way it becomes impossible to conflate the two eliminating the possibility of any bugs. All of the vfs and all filesystems only operate on struct mnt_idmap. Acked-by: Dave Chinner Reviewed-by: Christoph Hellwig Signed-off-by: Christian Brauner (Microsoft)

fs: port ->mkdir() to pass mnt_idmap

2023-01-19T08:24:26Z

fs: port ->symlink() to pass mnt_idmap

2023-01-19T08:24:25Z

fs: port ->setattr() to pass mnt_idmap

2023-01-19T08:24:02Z