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Revert "mm: change max readahead size to 512KB"

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This reverts commit 25d04e4ceb.

It was proven that 512KB brings huge memory pressure.

Change-Id: Id6a2003a00071c4992cc9e4b1c268ac4698af06e
Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
This commit is contained in:
Jaegeuk Kim
2019-12-04 10:37:47 -08:00
committed by hridaya
parent 0e3e665747
commit c6c1218897
1 changed files with 1 additions and 1 deletions
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include/linux/mm.h
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@@ -2570,7 +2570,7 @@ int __must_check write_one_page(struct page *page);
void task_dirty_inc(struct task_struct *tsk);
/* readahead.c */
#define VM_MAX_READAHEAD 512 /* kbytes */
#define VM_MAX_READAHEAD 128 /* kbytes */
#define VM_MIN_READAHEAD 16 /* kbytes (includes current page) */
int force_page_cache_readahead(struct address_space *mapping, struct file *filp,