diff options
| author | Lee Susman <lsusman@codeaurora.org> | 2013-10-08 09:47:59 +0300 |
|---|---|---|
| committer | Gerrit - the friendly Code Review server <code-review@localhost> | 2018-02-02 00:58:39 -0800 |
| commit | 1f83fb8efbd76c4d9f8f088e69258d88cff2208e (patch) | |
| tree | bafe8c184df0616c0e4d3ea450061e40a6b145e5 | |
| parent | 3fe4f284c8977031fd3c3f0729b9a7772b48aeca (diff) | |
mm: change max readahead size to 512KB
Change the VM_MAX_READAHEAD value from the default 128KB
to 512KB. This will allow the readahead window to grow to a maximum size
of 512KB, which greatly benefits to sequential read throughput.
Change-Id: Ia0780ea4e2a4ae0b6111485b72fb25376dcb1f96
Signed-off-by: Lee Susman <lsusman@codeaurora.org>
| -rw-r--r-- | include/linux/mm.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 9d83f5212ea6..d2dcc8727bc8 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1985,7 +1985,7 @@ int write_one_page(struct page *page, int wait); void task_dirty_inc(struct task_struct *tsk); /* readahead.c */ -#define VM_MAX_READAHEAD 128 /* kbytes */ +#define VM_MAX_READAHEAD 512 /* kbytes */ #define VM_MIN_READAHEAD 16 /* kbytes (includes current page) */ int force_page_cache_readahead(struct address_space *mapping, struct file *filp, |