Enable reclaim operations on a specific region of memory. More...

Macros
#define	__GFP_IO ___GFP_IO
	Can start physical IO.

#define	__GFP_FS ___GFP_FS
	Can call down to the low-level FS. Clearing the flag avoids the allocator recursing into the filesystem which might already be holding locks.

#define	__GFP_DIRECT_RECLAIM ___GFP_DIRECT_RECLAIM
	Indicates that the caller may enter direct reclaim. This flag can be cleared to avoid unnecessary delays when a fallback option is available.

#define	__GFP_KSWAPD_RECLAIM ___GFP_KSWAPD_RECLAIM
	Indicates that the caller wants to wake kswapd when the low watermark is reached and have it reclaim pages until the high watermark is reached. A caller may wish to clear this flag when fallback options are available and the reclaim is likely to disrupt the system. The canonical example is THP allocation where a fallback is cheap but reclaim/compaction may cause indirect stalls.

#define	__GFP_RECLAIM (___GFP_DIRECT_RECLAIM \| ___GFP_KSWAPD_RECLAIM)
	Is shorthand to allow/forbid both direct and kswapd reclaim.

Detailed Description

Enable reclaim operations on a specific region of memory.

Macros