From: Andi Drebes <lists-receive@programmierforen.de>
To: linux-fsdevel@vger.kernel.org
Cc: Christoph Hellwig <hch@infradead.org>,
Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: [PATCH 0/2] cramfs: update README file
Date: Thu, 15 Nov 2007 21:37:27 +0100 [thread overview]
Message-ID: <200711152137.28105.lists-receive@programmierforen.de> (raw)
In-Reply-To: <200711152129.25686.lists-receive@programmierforen.de>
This patch updates the readme file according to the
new mount option "swapendian".
Signed-off-by: Andi Drebes <andi@programmierforen.de>
---
fs/cramfs/README | 21 +++++++++------------
1 files changed, 9 insertions(+), 12 deletions(-)
diff --git a/fs/cramfs/README b/fs/cramfs/README
index 445d1c2..acbbdc4 100644
--- a/fs/cramfs/README
+++ b/fs/cramfs/README
@@ -1,3 +1,12 @@
+Mount options
+-------------
+
+Currently, there is only one mount option available for cramfs:
+
+swapendian:
+ causes the filesystem's metadata to be converted from
+ non-host-endianness to host-endianness.
+
Notes on Filesystem Layout
--------------------------
@@ -108,18 +117,6 @@ kernels, not even necessarily kernels of the same architecture if
PAGE_CACHE_SIZE is subject to change between kernel versions
(currently possible with arm and ia64).
-The remaining options try to make cramfs more sharable.
-
-One part of that is addressing endianness. The two options here are
-`always use little-endian' (like ext2fs) or `writer chooses
-endianness; kernel adapts at runtime'. Little-endian wins because of
-code simplicity and little CPU overhead even on big-endian machines.
-
-The cost of swabbing is changing the code to use the le32_to_cpu
-etc. macros as used by ext2fs. We don't need to swab the compressed
-data, only the superblock, inodes and block pointers.
-
-
The other part of making cramfs more sharable is choosing a block
size. The options are:
next prev parent reply other threads:[~2007-11-15 20:37 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-15 20:29 [PATCH 0/2] cramfs: support for other endianness Andi Drebes
2007-11-15 20:35 ` [PATCH 0/2] cramfs: Add mount option "swapendian" Andi Drebes
2007-11-15 20:45 ` Linus Torvalds
2007-11-15 20:46 ` Linus Torvalds
2007-11-15 20:51 ` Christoph Hellwig
2007-11-15 20:49 ` Christoph Hellwig
2007-11-15 20:57 ` Linus Torvalds
2007-11-15 21:15 ` Andi Drebes
2007-11-15 21:37 ` Linus Torvalds
2007-11-15 22:48 ` Phillip Lougher
2007-11-16 10:28 ` Andi Drebes
2007-11-16 15:44 ` Linus Torvalds
2007-11-15 21:03 ` Jörn Engel
2007-11-15 20:37 ` Andi Drebes [this message]
2007-11-15 20:43 ` [PATCH 0/2] cramfs: support for other endianness Andi Drebes
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