table of contents
| FIND_OR_CREATE_PAGE(9) | Memory Management in Linux | FIND_OR_CREATE_PAGE(9) |
NAME¶
find_or_create_page - locate or add a pagecache page
SYNOPSIS¶
struct page * find_or_create_page(struct address_space * mapping, pgoff_t index, gfp_t gfp_mask);
ARGUMENTS¶
mapping
the page´s address_space
index
the page´s index into the mapping
gfp_mask
page allocation mode
DESCRIPTION¶
Locates a page in the pagecache. If the page is not present, a new page is allocated using gfp_mask and is added to the pagecache and to the VM´s LRU list. The returned page is locked and has its reference count incremented.
find_or_create_page may sleep, even if gfp_flags specifies an atomic allocation!
find_or_create_page returns the desired page´s address, or zero on memory exhaustion.
COPYRIGHT¶
| April 2023 | Kernel Hackers Manual 2.6. |