The patch titled Subject: ida: make ida_simple_get/put() IRQ safe has been removed from the -mm tree. Its filename was ida-make-ida_simple_get-put-irq-safe.patch This patch was dropped because it was merged into mainline or a subsystem tree The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ From: Tejun Heo <tj@xxxxxxxxxx> Subject: ida: make ida_simple_get/put() IRQ safe It's often convenient to be able to release resource from IRQ context. Make ida_simple_*() use irqsave/restore spin ops so that they are IRQ safe. Signed-off-by: Tejun Heo <tj@xxxxxxxxxx> Acked-by: Rusty Russell <rusty@xxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- lib/idr.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff -puN lib/idr.c~ida-make-ida_simple_get-put-irq-safe lib/idr.c --- a/lib/idr.c~ida-make-ida_simple_get-put-irq-safe +++ a/lib/idr.c @@ -944,6 +944,7 @@ int ida_simple_get(struct ida *ida, unsi { int ret, id; unsigned int max; + unsigned long flags; BUG_ON((int)start < 0); BUG_ON((int)end < 0); @@ -959,7 +960,7 @@ again: if (!ida_pre_get(ida, gfp_mask)) return -ENOMEM; - spin_lock(&simple_ida_lock); + spin_lock_irqsave(&simple_ida_lock, flags); ret = ida_get_new_above(ida, start, &id); if (!ret) { if (id > max) { @@ -969,7 +970,7 @@ again: ret = id; } } - spin_unlock(&simple_ida_lock); + spin_unlock_irqrestore(&simple_ida_lock, flags); if (unlikely(ret == -EAGAIN)) goto again; @@ -985,10 +986,12 @@ EXPORT_SYMBOL(ida_simple_get); */ void ida_simple_remove(struct ida *ida, unsigned int id) { + unsigned long flags; + BUG_ON((int)id < 0); - spin_lock(&simple_ida_lock); + spin_lock_irqsave(&simple_ida_lock, flags); ida_remove(ida, id); - spin_unlock(&simple_ida_lock); + spin_unlock_irqrestore(&simple_ida_lock, flags); } EXPORT_SYMBOL(ida_simple_remove); _ Patches currently in -mm which might be from tj@xxxxxxxxxx are origin.patch linux-next.patch drivers-scsi-osd-osd_uldc-use-ida_simple_get-to-handle-id.patch scatterlist-new-helper-functions.patch scatterlist-new-helper-functions-update.patch scatterlist-new-helper-functions-update-fix.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html