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ext4 (fourth extended filesystem) is a journaling file system for Linux, developed as the successor to ext3.
The analysis highlights Geography, Features and Limitations as prominent areas in the source structure around Ext4.
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Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.
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The extracted context around Ext4 shows recurring relationship patterns in the source. For example, Ext4 → Although, ARM64, Insider Preview Build, Linux, Specifically, Windows, Windows Subsystem, WSL Another extracted example is Ext4 → Btrfs, Google, Huawei, IBM, SuSE, Theodore Ts'o, Ts'o. Use these groups to spot repeated connection types before inspecting the individual relationships.
Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.
file linux ext3 block system filesystem systems bitmap data group windows kernel inode write version new development gpt open disk
TTTA extracted 51 structured relationships around Ext4. Examples in this analysis include Ext4 → Allowed filename characters → All characters and character sequences permitted, except for NULL ('\0'), '/', and the special file names "." and ".." which are reserved for indicating (respectively) current a… and Ext4 → Attributes → acl, bh, bsddf, commit=nrsec, data=journal, data=ordered, data=writeback, delalloc, extents, journal_dev, mballoc, minixdf, noacl, nobh, nodelalloc, noextents, nomballoc, nombca…. The table shows each extracted connection, where it came from and its confidence.
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Ext4 | Allowed filename characters | All characters and character sequences permitted, except for NULL ('\0'), '/', and the special file names "." and ".." which are reserved for indicating (respectively) current a… | 1.00 | infobox |
| Ext4 | Attributes | acl, bh, bsddf, commit=nrsec, data=journal, data=ordered, data=writeback, delalloc, extents, journal_dev, mballoc, minixdf, noacl, nobh, nodelalloc, noextents, nomballoc, nombca… | 1.00 | infobox |
| Ext4 | Bad blocks | Table | 1.00 | infobox |
| Ext4 | Date range | 14 December 1901 – 10 May 2446 | 1.00 | infobox |
| Ext4 | Date resolution | Nanosecond | 1.00 | infobox |
| Ext4 | Dates recorded | Modification (mtime), data or attribute modification (ctime), access (atime), deletion (dtime), creation (crtime) | 1.00 | infobox |
| Ext4 | Developer(s) | Mingming Cao, Andreas Dilger, Alex Zhuravlev (Tomas), Dave Kleikamp, Theodore Ts'o, Eric Sandeen, Sam Naghshineh, others | 1.00 | infobox |
| Ext4 | Directory contents | Linked list, hashed B-tree | 1.00 | infobox |
| Ext4 | File allocation | Extents / Bitmap | 1.00 | infobox |
| Ext4 | File system permissions | Unix permissions, POSIX ACLs | 1.00 | infobox |
| Ext4 | Full name | Fourth extended file system | 1.00 | infobox |
| Ext4 | Introduced | 10 October 2006 with Linux 2.6.19 | 1.00 | infobox |
| Ext4 | Max file size | 16–256 TiB (for 4–64 KiB block size) | 1.00 | infobox |
| Ext4 | Max filename length | 255 bytes (fewer for multibyte character encodings such as Unicode) | 1.00 | infobox |
| Ext4 | Max no. of files | 4 billion (specified at filesystem creation time) | 1.00 | infobox |
| Ext4 | Max volume size | 1 EiB | 1.00 | infobox |
| Ext4 | Preceded by | ext3 | 1.00 | infobox |
| Ext4 | Supported operating systems | Linux | 1.00 | infobox |
| Ext4 | Supported operating systems | FreeBSD (full read/write support since version 12.0) | 1.00 | infobox |
| Ext4 | Supported operating systems | macOS (read-only with ext4fuse, full with ExtFS) | 1.00 | infobox |
| Ext4 | Supported operating systems | Windows (read–write without journaling with ext2fsd) | 1.00 | infobox |
| Ext4 | Supported operating systems | KolibriOS (read-only) | 1.00 | infobox |
| Ext4 | Transparent encryption | Yes | 1.00 | infobox |
The concept neighborhoods around Ext4 bring nearby vocabulary together. In this analysis, examples include Linux, Ext3 and File. Use the clusters to find adjacent concepts and terminology that may deserve separate research.
For Ext4, one of the stronger structural bridges in this analysis connects Ext4 with Features. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.
TTTA analyzes the structure around Ext4 to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as Geography, Features & Limitations, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.
Source: Wikipedia — Ext4 · EN edition · Analysis: TopicsToTalkAbout
