diff options
| author | Andrew Morton <akpm@osdl.org> | 2004-04-18 22:05:29 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2004-04-18 22:05:29 -0700 |
| commit | 8cc89540826b8426aaaef985c8d76443ceb9a990 (patch) | |
| tree | 2fa62cde6a62935cd99193d424695a07e839e53d /include | |
| parent | ef29bf03ef66e8c00f2917668ffb0c15e75bce8b (diff) | |
[PATCH] idr.c: extra features enhancements
From: Jim Houston <jim.houston@comcast.net>
- Adds idr_get_new_above(), whihc permits us to do a first-fit search
from a specified offset rather than always from zero.
- Add IDR_INIT() DEFINE_IDR() constructors. Often idr's are singletons
and having to cook up an initcall for them is a pain.
This is needed by the "Increase number of dynamic inodes in procfs" patch.
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/idr.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/idr.h b/include/linux/idr.h index b3a58338ed32..0aeae77806c7 100644 --- a/include/linux/idr.h +++ b/include/linux/idr.h @@ -23,6 +23,7 @@ # error "BITS_PER_LONG is not 32 or 64" #endif +#define IDR_SIZE (1 << IDR_BITS) #define IDR_MASK ((1 << IDR_BITS)-1) /* Define the size of the id's */ @@ -53,6 +54,17 @@ struct idr { spinlock_t lock; }; +#define IDR_INIT(name) \ +{ \ + .top = NULL, \ + .id_free = NULL, \ + .count = 0, \ + .layers = 0, \ + .id_free_cnt = 0, \ + .lock = SPIN_LOCK_UNLOCKED, \ +} +#define DEFINE_IDR(name) struct idr name = IDR_INIT(name) + /* * This is what we export. */ |