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| author | David Sterba <dsterba@suse.com> | 2022-05-13 18:54:14 +0200 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2022-05-17 21:12:19 +0200 |
| commit | 1c70e888da2009ed088fbfe6e22b42acf7ece951 (patch) | |
| tree | e7f9cc246e24be3d1cff84cba8abf0e2c17b04e6 /Documentation | |
| parent | 65f67f58294a111c72bf189964f133b38a6190cd (diff) | |
| download | btrfs-progs-1c70e888da2009ed088fbfe6e22b42acf7ece951.tar.gz | |
btrfs-progs: docs: add subpage feature page
Introductory paragraph, status and progress needs to be added.
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/Subpage.rst | 11 | ||||
| -rw-r--r-- | Documentation/index.rst | 1 |
2 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/Subpage.rst b/Documentation/Subpage.rst new file mode 100644 index 00000000..0aadf3c0 --- /dev/null +++ b/Documentation/Subpage.rst @@ -0,0 +1,11 @@ +Subpage support +=============== + +Subpage block size support, or just *subpage* for short, is a feature to allow +using a filesystem that has different size of data block size (*sectorsize*) +and the host CPU page size. For easier implementation the support was limited +to the exactly same size of the block and page. On x86_64 this is typically +4KiB, but there are other architectures commonly used that make use of larger +pages, like 64KiB on 64bit ARM or PowerPC. A filesystem created on one cannot +be mounted on the other. The subpage support is still work in progress in 5.18 +but the support is incrementally added with each release. diff --git a/Documentation/index.rst b/Documentation/index.rst index 01e563a4..fd430805 100644 --- a/Documentation/index.rst +++ b/Documentation/index.rst @@ -35,6 +35,7 @@ Welcome to BTRFS documentation! Scrub Seeding-device Send-receive + Subpage Subvolumes Swapfile Tree-checker |