函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\memory.c Create Date:2022-07-27 16:08:55
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：__get_fault_gfp_mask

函数原型：static gfp_t __get_fault_gfp_mask(struct vm_area_struct *vma)

返回类型：gfp_t

参数：

类型参数名称
struct vm_area_struct *vma
2317  vm_file等于File we map to (can be NULL).
2319  如果vm_file则返回:mapping_gfp_mask(f_mapping)按位或__GFP_FS按位或DOC: Reclaim modifiers* Reclaim modifiers* ~~~~~~~~~~~~~~~~~* %__GFP_IO can start physical IO.* %__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.
2326  返回:GFP_KERNEL
调用者
名称描述
__handle_mm_faultBy the time we get here, we already hold the mm semaphore* The mmap_sem may have been released depending on flags and our* return value. See filemap_fault() and __lock_page_or_retry().