diff options
| author | Daniel Drake <dsd@laptop.org> | 2010-10-07 19:14:02 +0100 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2010-10-25 00:57:19 +0100 |
| commit | 65e5a0e18e5fb5bc6cfabd8ef4b9fc1c8569ba62 (patch) | |
| tree | 0790ae9e682c5de24b0ffd7111a0bfab4f03aab3 /fs/jffs2/nodelist.h | |
| parent | b46daf7eb1a143169699a8f9df634aa751a6ddde (diff) | |
| download | op-kernel-dev-65e5a0e18e5fb5bc6cfabd8ef4b9fc1c8569ba62.zip op-kernel-dev-65e5a0e18e5fb5bc6cfabd8ef4b9fc1c8569ba62.tar.gz | |
jffs2: Dynamically choose inocache hash size
When JFFS2 is used for large volumes, the mount times are quite long.
Increasing the hash size provides a significant speed boost on the OLPC
XO-1 laptop.
Add logic that dynamically selects a hash size based on the size of
the medium. A 64mb medium will result in a hash size of 128, and a 512mb
medium will result in a hash size of 1024.
Signed-off-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'fs/jffs2/nodelist.h')
| -rw-r--r-- | fs/jffs2/nodelist.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h index 523a916..5a53d9b 100644 --- a/fs/jffs2/nodelist.h +++ b/fs/jffs2/nodelist.h @@ -199,7 +199,8 @@ struct jffs2_inode_cache { #define RAWNODE_CLASS_XATTR_DATUM 1 #define RAWNODE_CLASS_XATTR_REF 2 -#define INOCACHE_HASHSIZE 128 +#define INOCACHE_HASHSIZE_MIN 128 +#define INOCACHE_HASHSIZE_MAX 1024 #define write_ofs(c) ((c)->nextblock->offset + (c)->sector_size - (c)->nextblock->free_size) |
