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| author | Jan Kara <jack@suse.cz> | 2021-08-16 11:57:07 +0200 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2021-08-30 23:36:51 -0400 |
| commit | 3a6541e97c035dba90cdf37169d73b2d8057e55d (patch) | |
| tree | 7a98a31422d7d5dcc9bd16ac7ff422be13a000ae /Documentation/filesystems/ext4/special_inodes.rst | |
| parent | 02f310fcf47fa9311d6ba2946a8d19e7d7d11f37 (diff) | |
| download | linux-3a6541e97c035dba90cdf37169d73b2d8057e55d.tar.gz | |
ext4: Orphan file documentation
Add documentation about the orphan file feature.
Reviewed-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20210816095713.16537-4-jack@suse.cz
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'Documentation/filesystems/ext4/special_inodes.rst')
| -rw-r--r-- | Documentation/filesystems/ext4/special_inodes.rst | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/Documentation/filesystems/ext4/special_inodes.rst b/Documentation/filesystems/ext4/special_inodes.rst index 9061aabba827..94f304e3a0a7 100644 --- a/Documentation/filesystems/ext4/special_inodes.rst +++ b/Documentation/filesystems/ext4/special_inodes.rst @@ -36,3 +36,20 @@ ext4 reserves some inode for special features, as follows: * - 11 - Traditional first non-reserved inode. Usually this is the lost+found directory. See s\_first\_ino in the superblock. +Note that there are also some inodes allocated from non-reserved inode numbers +for other filesystem features which are not referenced from standard directory +hierarchy. These are generally reference from the superblock. They are: + +.. list-table:: + :widths: 20 50 + :header-rows: 1 + + * - Superblock field + - Description + + * - s\_lpf\_ino + - Inode number of lost+found directory. + * - s\_prj\_quota\_inum + - Inode number of quota file tracking project quotas + * - s\_orphan\_file\_inum + - Inode number of file tracking orphan inodes. |