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Commit 0ad42352c01788e41a33336577fdd270d8de55bb

Authored by David Howells
Committed by Linus Torvalds
1 parent e329113ca4
Exists in master and in 7 other branches imx_3.0.35_4.1.0, imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga, smarc-l5.0.0_1.0.0-ga

[PATCH] Add list_for_each_entry_safe_reverse() 

Add list_for_each_entry_safe_reverse() to linux/list.h

This is needed by unmerged cachefs and be an as-yet-unreviewed
device_shutdown() fix.

Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Patrick Mochel <mochel@digitalimplant.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Showing 1 changed file with 14 additions and 0 deletions Side-by-side Diff

include/linux/list.h
Diff comments   View file @ 0ad4235
... ... @@ -436,6 +436,20 @@
436 436 pos = n, n = list_entry(n->member.next, typeof(*n), member))
437 437  
438 438 /**
  439 + * list_for_each_entry_safe_reverse - iterate backwards over list of given type safe against
  440 + * removal of list entry
  441 + * @pos: the type * to use as a loop counter.
  442 + * @n: another type * to use as temporary storage
  443 + * @head: the head for your list.
  444 + * @member: the name of the list_struct within the struct.
  445 + */
  446 +#define list_for_each_entry_safe_reverse(pos, n, head, member) \
  447 + for (pos = list_entry((head)->prev, typeof(*pos), member), \
  448 + n = list_entry(pos->member.prev, typeof(*pos), member); \
  449 + &pos->member != (head); \
  450 + pos = n, n = list_entry(n->member.prev, typeof(*n), member))
  451 +
  452 +/**
439 453 * list_for_each_rcu - iterate over an rcu-protected list
440 454 * @pos: the &struct list_head to use as a loop counter.
441 455 * @head: the head for your list.