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ef1d7151d2
- Fix resource leakage in error case within detect_cache_attributes() - Don't register hotcpu notifier when cache_add_dev() returns error - Introduce cache_dev_map cpumask to track whether cache interface for CPU is successfully added by cache_add_dev() or not. cache_add_dev() may fail with out of memory error. In order to avoid cache_remove_dev() with that uninitialized cache interface when CPU_DEAD event is delivered we need to have the cache_dev_map cpumask. (We cannot change cache_add_dev() from CPU_ONLINE event handler to CPU_UP_PREPARE event handler. Because cache_add_dev() needs to do cpuid and store the results with its CPU online.) [nix.or.die@googlemail.com: fix a section mismatch warning] Cc: Ashok Raj <ashok.raj@intel.com> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Gautham R Shenoy <ego@in.ibm.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Andi Kleen <ak@suse.de> Cc: Jan Beulich <jbeulich@novell.com> Signed-off-by: Gabriel Craciunescu <nix.or.die@googlemail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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