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charset="UTF-8" X-Rspam-User: X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 22B8420005 X-Stat-Signature: p1jfrm3ip55kue88apmbph8ihjeu56bo X-HE-Tag: 1788346272-960166 X-HE-Meta: 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 /1CnAjwf 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: set_direct_map_*() implementations verify wheter the direct map can be effectively set. This verification can be costly. Add an "advanced" API __set_direct_map_*() where the direct map is modified without any check. The caller must have verified it is safe earlier with one of the can_set_direct_map() or can_set_direct_map_range() functions. Signed-off-by: Vincent Donnefort diff --git a/include/linux/set_memory.h b/include/linux/set_memory.h index 88175c3fa751..5a1917a3fd52 100644 --- a/include/linux/set_memory.h +++ b/include/linux/set_memory.h @@ -34,6 +34,15 @@ static inline int set_direct_map_default_noflush(struct page *page) return 0; } +static inline int __set_direct_map_invalid_noflush(struct page *page) +{ + return 0; +} +static inline int __set_direct_map_default_noflush(struct page *page) +{ + return 0; +} + static inline int set_direct_map_valid_noflush(struct page *page, unsigned nr, bool valid) { @@ -70,6 +79,22 @@ static inline bool can_set_direct_map_range(struct page *page, unsigned long nr_ } #define can_set_direct_map_range can_set_direct_map_range #endif + +#ifndef __set_direct_map_invalid_noflush +static inline int __set_direct_map_invalid_noflush(struct page *page) +{ + return set_direct_map_invalid_noflush(page); +} +#define __set_direct_map_invalid_noflush __set_direct_map_invalid_noflush +#endif + +#ifndef __set_direct_map_default_noflush +static inline int __set_direct_map_default_noflush(struct page *page) +{ + return set_direct_map_default_noflush(page); +} +#define __set_direct_map_default_noflush __set_direct_map_default_noflush +#endif #endif /* CONFIG_ARCH_HAS_SET_DIRECT_MAP */ #ifdef CONFIG_X86_64 -- 2.55.0.970.g62bdec98f9-goog