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Unverified Commit c6c12188 authored by Jaegeuk Kim's avatar Jaegeuk Kim Committed by hridaya
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Revert "mm: change max readahead size to 512KB" 



This reverts commit 25d04e4c.

It was proven that 512KB brings huge memory pressure.

Change-Id: Id6a2003a00071c4992cc9e4b1c268ac4698af06e
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@google.com>
parent 0e3e6657

include/linux/mm.h

+1 −1
Original line number Diff line number Diff line
@@ -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,