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Diff of /trunk/1.8.x/ccs-patch/README.ccs
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| 2273 |
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| 2274 |
@ Use rcu_read_lock() for find_task_by_pid(). |
@ Use rcu_read_lock() for find_task_by_pid(). |
| 2275 |
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| 2276 |
Since kernel 2.6.16 , caller of find_task_by_pid() needs to call |
Since kernel 2.6.18 , caller of find_task_by_pid() needs to call |
| 2277 |
rcu_read_lock() rather than read_lock(&tasklist_lock) because find_pid() |
rcu_read_lock() rather than read_lock(&tasklist_lock) because find_pid() |
| 2278 |
uses RCU primitives but spinlock does not prevent RCU callback if |
uses RCU primitives but spinlock does not prevent RCU callback if |
| 2279 |
preemptive RCU ( CONFIG_PREEMPT_RCU or CONFIG_TREE_PREEMPT_RCU ) is |
preemptive RCU ( CONFIG_PREEMPT_RCU or CONFIG_TREE_PREEMPT_RCU ) is |
| 2280 |
enabled. |
enabled. |
| 2281 |
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| 2282 |
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Fix 2009/12/15 |
| 2283 |
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| 2284 |
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@ Don't check DAC permission if disabled mode. |
| 2285 |
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| 2286 |
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I was checking DAC permissions regarding directory entry modification |
| 2287 |
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operations (e.g. mkdir()) even if mode=disabled . It is a waste of CPU |
| 2288 |
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resource to check DAC permissions when MAC permissions are not checked. |
| 2289 |
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Thus, I modified to skip DAC permission checks if mode=disabled . |
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Legend:
| Removed from v.3248 |
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| changed lines |
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Added in v.3256 |
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TOMOYO
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