From: Ted Ts'o <tytso@mit.edu>
To: David Howells <dhowells@redhat.com>
Cc: linux-fsdevel@vger.kernel.org, viro@ZenIV.linux.org.uk,
valerie.aurora@gmail.com, linux-kernel@vger.kernel.org,
Valerie Aurora <vaurora@redhat.com>, Jan Blunck <jblunck@suse.de>,
Jan Kara <jack@suse.cz>,
linux-ext4@vger.kernel.org
Subject: Re: [PATCH 69/73] ext2: Add fallthru support [ver #2]
Date: Sun, 26 Feb 2012 19:33:12 -0500 [thread overview]
Message-ID: <20120227003312.GC8044@thunk.org> (raw)
In-Reply-To: <20120221180611.25235.63025.stgit@warthog.procyon.org.uk>
On Tue, Feb 21, 2012 at 06:06:11PM +0000, David Howells wrote:
> From: Valerie Aurora <vaurora@redhat.com>
>
> Add support for fallthru directory entries to ext2.
As I mentioned, I wonder if it makes sense combine the patches for
whiteout and fallthrough director entries into a single patch. Given
that the two patches modify the same functions, and in some cases
second modifies lines added or modified by first, it just makes life
easier if the two are folded together.
> --- a/include/linux/ext2_fs.h
> +++ b/include/linux/ext2_fs.h
> @@ -506,11 +506,14 @@ struct ext2_super_block {
> #define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008
> #define EXT2_FEATURE_INCOMPAT_META_BG 0x0010
> #define EXT2_FEATURE_INCOMPAT_WHITEOUT 0x0020
> +/* ext3/4 incompat flags take up the intervening constants */
> +#define EXT2_FEATURE_INCOMPAT_FALLTHRU 0x2000
... and the codepoint 0x2000 in the INCOMPAT mask has since already
been assigned.
As I mentioned in a comment to the previous patch, any objections if
you combine these two fields into a single ROCOMPAT feature?
#define EXT2_FEATURE_RO_COMPAT_UNION_MOUNT 0x0800
- Ted
next prev parent reply other threads:[~2012-02-27 2:28 UTC|newest]
Thread overview: 98+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-21 17:57 [RFC][PATCH 00/73] Union Mount [ver #2] David Howells
2012-02-21 17:57 ` [PATCH 01/73] VFS: Make chown() and lchown() call fchownat() " David Howells
2012-02-21 17:57 ` [PATCH 02/73] VFS: Make clone_mnt()/copy_tree()/collect_mounts() return errors " David Howells
2012-02-21 17:57 ` [PATCH 03/73] VFS: Comment mount following code " David Howells
2012-02-21 17:57 ` [PATCH 04/73] VFS: Make lookup_hash() return a struct path " David Howells
2012-02-21 17:58 ` [PATCH 05/73] VFS: Pass mount flags to sget() " David Howells
2012-02-21 17:58 ` [PATCH 06/73] VFS: Split inode_permission() " David Howells
2012-02-21 17:58 ` [PATCH 07/73] VFS: Add hard read-only users count to superblock " David Howells
2012-02-21 17:58 ` [PATCH 08/73] VFS: Add CL_NO_SHARED flag to clone_mnt()/copy_tree() " David Howells
2012-02-29 6:56 ` Ram Pai
2012-02-21 17:58 ` [PATCH 09/73] VFS: Add CL_NO_SLAVE " David Howells
2012-02-29 6:58 ` Ram Pai
2012-02-21 17:58 ` [PATCH 10/73] VFS: Add CL_MAKE_HARD_READONLY " David Howells
2012-02-21 17:58 ` [PATCH 11/73] whiteout/NFSD: Don't return information about whiteouts to userspace " David Howells
2012-02-21 17:58 ` [PATCH 12/73] whiteout: Define flags and operations for opaque inodes " David Howells
2012-02-21 17:59 ` [PATCH 13/73] whiteout: Add vfs_whiteout() and whiteout inode operation " David Howells
2012-02-21 17:59 ` [PATCH 14/73] whiteout: Allow removal of a directory with whiteouts " David Howells
2012-02-21 17:59 ` [PATCH 15/73] tmpfs: Add whiteout support " David Howells
2012-02-21 17:59 ` David Howells
2012-02-21 17:59 ` [PATCH 16/73] VFS: Basic fallthru definitions " David Howells
2012-02-21 17:59 ` [PATCH 17/73] tmpfs: Add fallthru support " David Howells
2012-02-21 17:59 ` [PATCH 18/73] union-mount: Union mounts documentation " David Howells
2012-02-27 2:57 ` Randy Dunlap
2012-02-21 17:59 ` [PATCH 19/73] union-mount: Introduce MNT_UNION and MS_UNION flags " David Howells
2012-02-21 18:00 ` [PATCH 20/73] union-mount: Add CONFIG_UNION_MOUNT option " David Howells
2012-02-21 18:00 ` [PATCH 21/73] union-mount: Create union_stack structure " David Howells
2012-02-21 18:00 ` [PATCH 22/73] union-mount: Add two superblock fields for union mounts " David Howells
2012-02-21 18:00 ` [PATCH 23/73] union-mount: Add union_alloc() " David Howells
2012-02-21 18:00 ` [PATCH 24/73] union-mount: Add union_find_dir() " David Howells
2012-02-21 18:00 ` [PATCH 25/73] union-mount: Create d_free_unions() " David Howells
2012-02-21 18:00 ` [PATCH 26/73] union-mount: Free union stack on removal of topmost dentry from dcache " David Howells
2012-02-21 18:00 ` [PATCH 27/73] union-mount: Create union_add_dir() " David Howells
2012-02-21 18:01 ` [PATCH 28/73] union-mount: Add union_create_topmost_dir() " David Howells
2012-02-21 18:01 ` [PATCH 29/73] union-mount: Create IS_MNT_UNION() " David Howells
2012-02-21 18:01 ` [PATCH 30/73] union-mount: Create needs_lookup_union() " David Howells
2012-02-21 18:01 ` [PATCH 31/73] union-mount: Create check_topmost_union_mnt() " David Howells
2012-02-21 18:01 ` [PATCH 32/73] union-mount: Add clone_union_tree() and put_union_sb() " David Howells
2012-02-21 18:01 ` [PATCH 33/73] unionmount: Mark lower layers in union " David Howells
2012-02-21 18:01 ` [PATCH 34/73] union-mount: Create build_root_union() " David Howells
2012-02-21 18:01 ` [PATCH 35/73] union-mount: Create prepare_mnt_union() and cleanup_mnt_union() " David Howells
2012-02-21 18:02 ` [PATCH 36/73] union-mount: Prevent improper union-related remounts " David Howells
2012-02-21 18:02 ` [PATCH 37/73] union-mount: Prevent topmost file system from being mounted elsewhere " David Howells
2012-02-21 18:02 ` [PATCH 38/73] union-mount: Prevent bind mounts of union mounts " David Howells
2012-02-21 18:02 ` [PATCH 39/73] union-mount: Duplicate the i_{, dir_}mutex lock classes and use for upper layer " David Howells
2012-02-21 18:02 ` [PATCH 40/73] union-mount: Implement union mount " David Howells
2012-02-21 18:02 ` [PATCH 41/73] union-mount: Temporarily disable some syscalls " David Howells
2012-02-21 18:02 ` [PATCH 42/73] union-mount: Basic infrastructure of __lookup_union() " David Howells
2012-02-21 18:02 ` [PATCH 43/73] union-mount: Process negative dentries in " David Howells
2012-02-21 18:03 ` [PATCH 44/73] union-mount: Return files found in lower layers " David Howells
2012-02-21 18:03 ` [PATCH 45/73] union-mount: Build union stack " David Howells
2012-02-21 18:03 ` [PATCH 46/73] union-mount: Follow mount " David Howells
2012-02-21 18:03 ` [PATCH 47/73] union-mount: Add lookup_union_locked() " David Howells
2012-02-21 18:03 ` [PATCH 48/73] union-mount: Add wrapper for lookup_union_locked() and RCU hook " David Howells
2012-02-21 18:03 ` [PATCH 49/73] union-mount: Call union lookup functions in lookup path " David Howells
2012-02-21 18:03 ` [PATCH 50/73] union-mount: Create whiteout on unlink() " David Howells
2012-02-21 18:03 ` [PATCH 51/73] union-mount: Create whiteout on rmdir() " David Howells
2012-02-21 18:03 ` [PATCH 52/73] union-mount: Set opaque flag on new directories in unioned file systems " David Howells
2012-02-21 18:04 ` [PATCH 53/73] union-mount: Copy up directory entries on first readdir() " David Howells
2012-02-21 18:04 ` [PATCH 54/73] union-mount: Add generic_readdir_fallthru() helper " David Howells
2012-02-21 18:04 ` [PATCH 55/73] fallthru: tmpfs support for lookup of d_type/d_ino in fallthrus " David Howells
2012-02-21 18:04 ` David Howells
2012-02-21 18:04 ` [PATCH 56/73] union-mount: In-kernel file copyup routines " David Howells
2012-02-21 18:04 ` [PATCH 57/73] VFS: Create user_path_nd() to lookup both parent and target " David Howells
2012-02-21 18:04 ` [PATCH 58/73] unionmount: Add LOOKUP_COPY_UP " David Howells
2012-02-21 18:04 ` [PATCH 59/73] unionmount: Override creds when copying up a file to correctly set ownership " David Howells
2012-02-21 18:05 ` [PATCH 60/73] union-mount: Implement union-aware access()/faccessat() " David Howells
2012-02-21 18:05 ` [PATCH 61/73] union-mount: Make various syscalls aware (link, chmod, chown, utimes & setxattr) " David Howells
2012-02-21 18:05 ` [PATCH 62/73] union-mount: Implement union-aware rename() " David Howells
2012-02-21 18:05 ` [PATCH 63/73] union-mount: Implement union-aware writable open() " David Howells
2012-02-21 18:05 ` [PATCH 64/73] union-mount: Implement union-aware truncate() " David Howells
2012-02-21 18:05 ` [PATCH 65/73] ext2: Add ext2_dirent_in_use() " David Howells
2012-02-21 18:05 ` [PATCH 66/73] ext2: Split ext2_add_entry() from ext2_add_link() " David Howells
2012-02-27 0:04 ` Ted Ts'o
2012-02-27 3:30 ` Andreas Dilger
2012-02-27 19:09 ` Ted Ts'o
2012-02-27 20:45 ` Andreas Dilger
2012-02-21 18:05 ` [PATCH 67/73] ext2: Remove target inode pointer from ext2_add_entry() " David Howells
2012-02-27 0:22 ` Ted Ts'o
2012-02-21 18:06 ` [PATCH 68/73] ext2: Add whiteout and opaque directory support " David Howells
2012-02-21 18:06 ` [PATCH 69/73] ext2: Add fallthru " David Howells
2012-02-27 0:33 ` Ted Ts'o [this message]
2012-02-21 18:06 ` [PATCH 70/73] fallthru: ext2 support for lookup of d_type/d_ino in fallthrus " David Howells
2012-02-21 18:06 ` [PATCH 71/73] jffs2: Add whiteout support " David Howells
2012-02-21 18:06 ` David Howells
2012-02-21 18:06 ` [PATCH 72/73] jffs2: Add fallthru " David Howells
2012-02-21 18:06 ` David Howells
2012-02-21 18:06 ` [PATCH 73/73] fallthru: jffs2 support for lookup of d_type/d_ino in fallthrus " David Howells
2012-02-26 6:48 ` copy-up xattr (Re: [RFC][PATCH 00/73] Union Mount [ver #2]) J. R. Okajima
2012-03-26 14:22 ` David Howells
2012-03-26 14:22 ` David Howells
2012-03-27 4:38 ` Casey Schaufler
2012-03-27 4:38 ` Casey Schaufler
2012-03-27 13:10 ` David Quigley
2012-03-27 13:10 ` David Quigley
2012-03-27 13:10 ` David Quigley
2012-03-27 16:37 ` Casey Schaufler
2012-03-27 16:37 ` Casey Schaufler
2012-03-28 14:51 ` J. R. Okajima
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