blk_throtl_update_limit_valid

Name:blk_throtl_update_limit_valid

Proto:static void blk_throtl_update_limit_valid(struct throtl_data *td)

Type:void

Parameter:

Type	Parameter	Name
struct throtl_data *	td

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bool low_valid = false

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_read_lock() - mark the beginning of an RCU read-side critical section* When synchronize_rcu() is invoked on one CPU while other CPUs* are within RCU read-side critical sections, then the* synchronize_rcu() is guaranteed to block until after all the other

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lkg_for_each_descendant_post - post-order walk of a blkg's descendants*@d_blkg: loop cursor pointing to the current descendant*@pos_css: used for iteration*@p_blkg: target blkg to walk descendants of* Similar to blkg_for_each_descendant_pre() but performs (blkg, pos_css, root_blkg)

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tg = blkg_to_tg(blkg)

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If internally used bytes per second rate limits [generic data direction definitions ][LIMIT_LOW] || internally used bytes per second rate limits [WRITE][LIMIT_LOW] || internally used IOPS limits [generic data direction definitions ][LIMIT_LOW] || internally used IOPS limits [WRITE][LIMIT_LOW] Then

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low_valid = true

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Break

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_read_unlock() - marks the end of an RCU read-side critical section.* In most situations, rcu_read_unlock() is immune from deadlock.* However, in kernels built with CONFIG_RCU_BOOST, rcu_read_unlock()

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limit_valid[LIMIT_LOW] = low_valid

**Caller**
Name	Describe
throtl_pd_offline
tg_set_limit

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