diff options
| -rw-r--r-- | include/linux/pagemap.h | 1 | ||||
| -rw-r--r-- | mm/filemap.c | 22 |
2 files changed, 23 insertions, 0 deletions
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 759b29d9a69a..bcc1ea44b4e8 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -1101,6 +1101,7 @@ static inline void wait_on_page_locked(struct page *page) folio_wait_locked(page_folio(page)); } +void folio_end_read(struct folio *folio, bool success); void wait_on_page_writeback(struct page *page); void folio_wait_writeback(struct folio *folio); int folio_wait_writeback_killable(struct folio *folio); diff --git a/mm/filemap.c b/mm/filemap.c index cd872fbc6086..1ce78c619294 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -1526,6 +1526,28 @@ void folio_unlock(struct folio *folio) EXPORT_SYMBOL(folio_unlock); /** + * folio_end_read - End read on a folio. + * @folio: The folio. + * @success: True if all reads completed successfully. + * + * When all reads against a folio have completed, filesystems should + * call this function to let the pagecache know that no more reads + * are outstanding. This will unlock the folio and wake up any thread + * sleeping on the lock. The folio will also be marked uptodate if all + * reads succeeded. + * + * Context: May be called from interrupt or process context. May not be + * called from NMI context. + */ +void folio_end_read(struct folio *folio, bool success) +{ + if (likely(success)) + folio_mark_uptodate(folio); + folio_unlock(folio); +} +EXPORT_SYMBOL(folio_end_read); + +/** * folio_end_private_2 - Clear PG_private_2 and wake any waiters. * @folio: The folio. * |