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FIND_LOCK_ENTRY(9) | Memory Management in Linux | FIND_LOCK_ENTRY(9) |
NAME¶
find_lock_entry - locate, pin and lock a page cache entrySYNOPSIS¶
struct page *
find_lock_entry(struct address_space * mapping,
pgoff_t offset);
ARGUMENTS¶
mappingthe address_space to search
offset
the page cache index
DESCRIPTION¶
Looks up the page cache slot at mapping & offset. If there is a page cache page, it is returned locked and with an increased refcount. If the slot holds a shadow entry of a previously evicted page, or a swap entry from shmem/tmpfs, it is returned. Otherwise, NULL is returned. find_lock_entry may sleep.COPYRIGHT¶
January 2017 | Kernel Hackers Manual 4.8. |