The patch titled
Subject: idr: relocate idr_for_each_entry() and reorganize id[r|a]_get_new()
has been added to the -mm tree. Its filename is
idr-relocate-idr_for_each_entry-and-reorganize-id_get_new.patch
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------------------------------------------------------
From: Tejun Heo <tj@xxxxxxxxxx>
Subject: idr: relocate idr_for_each_entry() and reorganize id[r|a]_get_new()
* Move idr_for_each_entry() definition next to other idr related
definitions.
* Make id[r|a]_get_new() inline wrappers of id[r|a]_get_new_above().
This changes the implementation of idr_get_new() but the new
implementation is trivial. This patch doesn't introduce any
functional change.
Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/idr.h | 47 ++++++++++++++++++++++++++++++----------
lib/idr.c | 49 ------------------------------------------
2 files changed, 35 insertions(+), 61 deletions(-)
diff -puN include/linux/idr.h~idr-relocate-idr_for_each_entry-and-reorganize-id_get_new include/linux/idr.h
--- a/include/linux/idr.h~idr-relocate-idr_for_each_entry-and-reorganize-id_get_new
+++ a/include/linux/idr.h
@@ -99,7 +99,6 @@ struct idr {
void *idr_find(struct idr *idp, int id);
int idr_pre_get(struct idr *idp, gfp_t gfp_mask);
-int idr_get_new(struct idr *idp, void *ptr, int *id);
int idr_get_new_above(struct idr *idp, void *ptr, int starting_id, int *id);
int idr_for_each(struct idr *idp,
int (*fn)(int id, void *p, void *data), void *data);
@@ -109,6 +108,30 @@ void idr_remove(struct idr *idp, int id)
void idr_destroy(struct idr *idp);
void idr_init(struct idr *idp);
+/**
+ * idr_get_new - allocate new idr entry
+ * @idp: idr handle
+ * @ptr: pointer you want associated with the id
+ * @id: pointer to the allocated handle
+ *
+ * Simple wrapper around idr_get_new_above() w/ @starting_id of zero.
+ */
+static inline int idr_get_new(struct idr *idp, void *ptr, int *id)
+{
+ return idr_get_new_above(idp, ptr, 0, id);
+}
+
+/**
+ * idr_for_each_entry - iterate over an idr's elements of a given type
+ * @idp: idr handle
+ * @entry: the type * to use as cursor
+ * @id: id entry's key
+ */
+#define idr_for_each_entry(idp, entry, id) \
+ for (id = 0, entry = (typeof(entry))idr_get_next((idp), &(id)); \
+ entry != NULL; \
+ ++id, entry = (typeof(entry))idr_get_next((idp), &(id)))
+
void __idr_remove_all(struct idr *idp); /* don't use */
/**
@@ -149,7 +172,6 @@ struct ida {
int ida_pre_get(struct ida *ida, gfp_t gfp_mask);
int ida_get_new_above(struct ida *ida, int starting_id, int *p_id);
-int ida_get_new(struct ida *ida, int *p_id);
void ida_remove(struct ida *ida, int id);
void ida_destroy(struct ida *ida);
void ida_init(struct ida *ida);
@@ -158,17 +180,18 @@ int ida_simple_get(struct ida *ida, unsi
gfp_t gfp_mask);
void ida_simple_remove(struct ida *ida, unsigned int id);
-void __init idr_init_cache(void);
-
/**
- * idr_for_each_entry - iterate over an idr's elements of a given type
- * @idp: idr handle
- * @entry: the type * to use as cursor
- * @id: id entry's key
+ * ida_get_new - allocate new ID
+ * @ida: idr handle
+ * @p_id: pointer to the allocated handle
+ *
+ * Simple wrapper around ida_get_new_above() w/ @starting_id of zero.
*/
-#define idr_for_each_entry(idp, entry, id) \
- for (id = 0, entry = (typeof(entry))idr_get_next((idp), &(id)); \
- entry != NULL; \
- ++id, entry = (typeof(entry))idr_get_next((idp), &(id)))
+static inline int ida_get_new(struct ida *ida, int *p_id)
+{
+ return ida_get_new_above(ida, 0, p_id);
+}
+
+void __init idr_init_cache(void);
#endif /* __IDR_H__ */
diff -puN lib/idr.c~idr-relocate-idr_for_each_entry-and-reorganize-id_get_new lib/idr.c
--- a/lib/idr.c~idr-relocate-idr_for_each_entry-and-reorganize-id_get_new
+++ a/lib/idr.c
@@ -317,36 +317,6 @@ int idr_get_new_above(struct idr *idp, v
}
EXPORT_SYMBOL(idr_get_new_above);
-/**
- * idr_get_new - allocate new idr entry
- * @idp: idr handle
- * @ptr: pointer you want associated with the id
- * @id: pointer to the allocated handle
- *
- * If allocation from IDR's private freelist fails, idr_get_new_above() will
- * return %-EAGAIN. The caller should retry the idr_pre_get() call to refill
- * IDR's preallocation and then retry the idr_get_new_above() call.
- *
- * If the idr is full idr_get_new_above() will return %-ENOSPC.
- *
- * @id returns a value in the range %0 ... %0x7fffffff
- */
-int idr_get_new(struct idr *idp, void *ptr, int *id)
-{
- int rv;
-
- rv = idr_get_new_above_int(idp, ptr, 0);
- /*
- * This is a cheap hack until the IDR code can be fixed to
- * return proper error values.
- */
- if (rv < 0)
- return _idr_rc_to_errno(rv);
- *id = rv;
- return 0;
-}
-EXPORT_SYMBOL(idr_get_new);
-
static void idr_remove_warning(int id)
{
printk(KERN_WARNING
@@ -857,25 +827,6 @@ int ida_get_new_above(struct ida *ida, i
EXPORT_SYMBOL(ida_get_new_above);
/**
- * ida_get_new - allocate new ID
- * @ida: idr handle
- * @p_id: pointer to the allocated handle
- *
- * Allocate new ID. It should be called with any required locks.
- *
- * If memory is required, it will return %-EAGAIN, you should unlock
- * and go back to the idr_pre_get() call. If the idr is full, it will
- * return %-ENOSPC.
- *
- * @p_id returns a value in the range %0 ... %0x7fffffff.
- */
-int ida_get_new(struct ida *ida, int *p_id)
-{
- return ida_get_new_above(ida, 0, p_id);
-}
-EXPORT_SYMBOL(ida_get_new);
-
-/**
* ida_remove - remove the given ID
* @ida: ida handle
* @id: ID to free
_
Patches currently in -mm which might be from tj@xxxxxxxxxx are
linux-next.patch
cfq-fix-lock-imbalance-with-failed-allocations.patch
block-restore-proc-partitions-to-not-display-non-partitionable-removable-devices.patch
memcg-do-not-create-memsw-files-if-swap-accounting-is-disabled.patch
memcg-clean-up-swap-accounting-initialization-code.patch
memcg-prevent-changes-to-move_charge_at_immigrate-during-task-attach.patch
memcg-split-part-of-memcg-creation-to-css_online.patch
memcg-fast-hierarchy-aware-child-test.patch
memcg-fast-hierarchy-aware-child-test-fix.patch
memcg-replace-cgroup_lock-with-memcg-specific-memcg_lock.patch
memcg-increment-static-branch-right-after-limit-set.patch
memcg-avoid-dangling-reference-count-in-creation-failure.patch
idr-fix-a-subtle-bug-in-idr_get_next.patch
idr-make-idr_destroy-imply-idr_remove_all.patch
atm-nicstar-dont-use-idr_remove_all.patch
block-loop-dont-use-idr_remove_all.patch
firewire-dont-use-idr_remove_all.patch
drm-dont-use-idr_remove_all.patch
dm-dont-use-idr_remove_all.patch
remoteproc-dont-use-idr_remove_all.patch
rpmsg-dont-use-idr_remove_all.patch
dlm-use-idr_for_each_entry-in-recover_idr_clear-error-path.patch
dlm-dont-use-idr_remove_all.patch
nfs-idr_destroy-no-longer-needs-idr_remove_all.patch
inotify-dont-use-idr_remove_all.patch
cgroup-dont-use-idr_remove_all.patch
idr-deprecate-idr_remove_all.patch
idr-cosmetic-updates-to-struct-initializer-definitions.patch
idr-relocate-idr_for_each_entry-and-reorganize-id_get_new.patch
idr-remove-_idr_rc_to_errno-hack.patch
idr-refactor-idr_get_new_above.patch
idr-implement-idr_preload-and-idr_alloc.patch
block-fix-synchronization-and-limit-check-in-blk_alloc_devt.patch
block-convert-to-idr_alloc.patch
block-loop-convert-to-idr_alloc.patch
atm-nicstar-convert-to-idr_alloc.patch
drbd-convert-to-idr_alloc.patch
dca-convert-to-idr_alloc.patch
dmaengine-convert-to-idr_alloc.patch
firewire-add-minor-number-range-check-to-fw_device_init.patch
firewire-convert-to-idr_alloc.patch
gpio-convert-to-idr_alloc.patch
drm-convert-to-idr_alloc.patch
drm-exynos-convert-to-idr_alloc.patch
drm-i915-convert-to-idr_alloc.patch
drm-sis-convert-to-idr_alloc.patch
drm-via-convert-to-idr_alloc.patch
drm-vmwgfx-convert-to-idr_alloc.patch
i2c-convert-to-idr_alloc.patch
ib-core-convert-to-idr_alloc.patch
ib-amso1100-convert-to-idr_alloc.patch
ib-cxgb3-convert-to-idr_alloc.patch
ib-cxgb4-convert-to-idr_alloc.patch
ib-ehca-convert-to-idr_alloc.patch
ib-ipath-convert-to-idr_alloc.patch
ib-mlx4-convert-to-idr_alloc.patch
ib-ocrdma-convert-to-idr_alloc.patch
ib-qib-convert-to-idr_alloc.patch
dm-convert-to-idr_alloc.patch
memstick-convert-to-idr_alloc.patch
mfd-convert-to-idr_alloc.patch
misc-c2port-convert-to-idr_alloc.patch
misc-tifm_core-convert-to-idr_alloc.patch
mmc-convert-to-idr_alloc.patch
mtd-convert-to-idr_alloc.patch
macvtap-convert-to-idr_alloc.patch
ppp-convert-to-idr_alloc.patch
power-convert-to-idr_alloc.patch
pps-convert-to-idr_alloc.patch
remoteproc-convert-to-idr_alloc.patch
rpmsg-convert-to-idr_alloc.patch
scsi-bfa-convert-to-idr_alloc.patch
scsi-convert-to-idr_alloc.patch
target-iscsi-convert-to-idr_alloc.patch
scsi-lpfc-convert-to-idr_alloc.patch
thermal-convert-to-idr_alloc.patch
uio-convert-to-idr_alloc.patch
vfio-convert-to-idr_alloc.patch
dlm-convert-to-idr_alloc.patch
inotify-convert-to-idr_alloc.patch
ocfs2-convert-to-idr_alloc.patch
ipc-convert-to-idr_alloc.patch
cgroup-convert-to-idr_alloc.patch
events-convert-to-idr_alloc.patch
posix-timers-convert-to-idr_alloc.patch
net-9p-convert-to-idr_alloc.patch
mac80211-convert-to-idr_alloc.patch
sctp-convert-to-idr_alloc.patch
nfs4client-convert-to-idr_alloc.patch
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