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Commit ad3bdefe authored by Wu Fengguang's avatar Wu Fengguang Committed by Linus Torvalds
Browse files

proc: fix kflags to uflags copying in /proc/kpageflags 



Fix kpf_copy_bit(src,dst) to be kpf_copy_bit(dst,src) to match the
actual call patterns, e.g. kpf_copy_bit(kflags, KPF_LOCKED, PG_locked).

This misplacement of src/dst only affected reporting of PG_writeback,
PG_reclaim and PG_buddy. For others kflags==uflags so not affected.

Signed-off-by: default avatarWu Fengguang <fengguang.wu@intel.com>
Reviewed-by: default avatarKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: stable@kernel.org
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 16b71fdf

fs/proc/page.c

+1 −1
Original line number Diff line number Diff line
@@ -80,7 +80,7 @@ static const struct file_operations proc_kpagecount_operations = { 
#define KPF_RECLAIM    9

#define KPF_BUDDY     10



#define kpf_copy_bit(flags, srcpos, dstpos) (((flags >> srcpos) & 1) << dstpos)

#define kpf_copy_bit(flags, dstpos, srcpos) (((flags >> srcpos) & 1) << dstpos)



static ssize_t kpageflags_read(struct file *file, char __user *buf,

			     size_t count, loff_t *ppos)