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authorDaniel Drake <dsd@laptop.org>2010-10-07 19:14:02 +0100
committerDavid Woodhouse <David.Woodhouse@intel.com>2010-10-25 00:57:19 +0100
commit65e5a0e18e5fb5bc6cfabd8ef4b9fc1c8569ba62 (patch)
tree0790ae9e682c5de24b0ffd7111a0bfab4f03aab3 /fs/jffs2/jffs2_fs_sb.h
parentb46daf7eb1a143169699a8f9df634aa751a6ddde (diff)
downloadlinux-65e5a0e18e5fb5bc6cfabd8ef4b9fc1c8569ba62.tar.bz2
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/jffs2_fs_sb.h')
-rw-r--r--fs/jffs2/jffs2_fs_sb.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/jffs2/jffs2_fs_sb.h b/fs/jffs2/jffs2_fs_sb.h
index 6784bc89add1..f864005de64c 100644
--- a/fs/jffs2/jffs2_fs_sb.h
+++ b/fs/jffs2/jffs2_fs_sb.h
@@ -100,6 +100,7 @@ struct jffs2_sb_info {
wait_queue_head_t erase_wait; /* For waiting for erases to complete */
wait_queue_head_t inocache_wq;
+ int inocache_hashsize;
struct jffs2_inode_cache **inocache_list;
spinlock_t inocache_lock;