diff options
| author | Wei Wang <wvw@google.com> | 2018-02-28 13:34:22 -0800 |
|---|---|---|
| committer | Michael Bestas <mkbestas@lineageos.org> | 2019-12-23 23:43:37 +0200 |
| commit | 70fde908c821bac2b2a26d73a7a4e29bd2602259 (patch) | |
| tree | f4c528ec3fa5834d325412ec1736c87b568c552f /include/linux/mm.h | |
| parent | 461e608fedcb9c117ac72546cc1503c80be80cad (diff) | |
ANDROID: mm: add config for default readahead size
Change the VM_MAX_READAHED value from the default 128KB to a
configurable value. This will allow the readahead window to grow to a
maximum size bigger than 128KB, which greatly benefits to sequential
read throughput and thus boot performance.
Bug: 62413151
Test: boot walleye 100ms faster
Change-Id: Iad448cf1198056de46654dcb409466802b3b908d
Signed-off-by: Wei Wang <wvw@google.com>
Diffstat (limited to 'include/linux/mm.h')
| -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 ecdabf3597ae..ed48a15d6363 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2008,7 +2008,7 @@ int write_one_page(struct page *page, int wait); void task_dirty_inc(struct task_struct *tsk); /* readahead.c */ -#define VM_MAX_READAHEAD 512 /* kbytes */ +#define VM_MAX_READAHEAD CONFIG_VM_MAX_READAHEAD /* kbytes */ #define VM_MIN_READAHEAD 16 /* kbytes (includes current page) */ int force_page_cache_readahead(struct address_space *mapping, struct file *filp, |