diff options
Diffstat (limited to 'Documentation/filesystems')
| -rw-r--r-- | Documentation/filesystems/ext4.txt | 6 | ||||
| -rw-r--r-- | Documentation/filesystems/proc.txt | 3 |
2 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/filesystems/ext4.txt b/Documentation/filesystems/ext4.txt index 0d5394920a3..289057958f9 100644 --- a/Documentation/filesystems/ext4.txt +++ b/Documentation/filesystems/ext4.txt @@ -177,6 +177,11 @@ barrier=<0|1(*)> This enables/disables the use of write barriers in your disks are battery-backed in one way or another, disabling barriers may safely improve performance. +inode_readahead=n This tuning parameter controls the maximum + number of inode table blocks that ext4's inode + table readahead algorithm will pre-read into + the buffer cache. The default value is 32 blocks. + orlov (*) This enables the new Orlov block allocator. It is enabled by default. @@ -252,6 +257,7 @@ stripe=n Number of filesystem blocks that mballoc will try delalloc (*) Deferring block allocation until write-out time. nodelalloc Disable delayed allocation. Blocks are allocation when data is copied from user to page cache. + Data Mode ========= There are 3 different data modes: diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt index d9ac9706735..d831d24d2a6 100644 --- a/Documentation/filesystems/proc.txt +++ b/Documentation/filesystems/proc.txt @@ -956,6 +956,9 @@ Table 1-10: Files in /proc/fs/ext4/<devname> files are packed closely together. Each large file will have its blocks allocated out of its own unique preallocation pool. +inode_readahead Tuning parameter which controls the maximum number of + inode table blocks that ext4's inode table readahead + algorithm will pre-read into the buffer cache .............................................................................. |