From 0e847864cef404f555387d7fcc97f7dbe769e1e9 Mon Sep 17 00:00:00 2001 From: Richard Braun Date: Fri, 3 May 2013 19:56:50 +0200 Subject: Handle notification on page eviction If requested by the user, make libpager call pager_notify_evict when a page is flushed out by the kernel. Based on work by Ognyan Kulev. * console/pager.c (pager_notify_evict): New function. (user_pager_create): Update call to pager_create. * ext2fs/pager.c: (pager_notify_evict): New function. (create_disk_pager): Update call to diskfs_start_disk_pager. (diskfs_get_filemap): Update call to pager_create. * fatfs/pager.c: (pager_notify_evict): New function. (create_fat_pager): Update call to diskfs_start_disk_pager. (diskfs_get_filemap): Update call to pager_create. * isofs/pager.c: (pager_notify_evict): New function. (create_disk_pager): Update call to diskfs_start_disk_pager. (diskfs_get_filemap): Update call to pager_create. * libdiskfs/disk-pager.c (diskfs_start_disk_pager): Update definition and call to pager_create. * libdiskfs/diskfs-pager.h (diskfs_start_disk_pager): Update declaration. * libpager/data-request.c (_pager_seqnos_memory_object_data_request): Take pager's `notify_on_evict' member into account when calling memory_object_data_supply. * libpager/data-return.c (_pager_do_write_request): Handle user notification on page flush. * libpager/pager-create.c (pager_create): Update definition and set pager's `notify_on_evict' member. * libpager/pager.h (pager_create): Update declaration. (pager_notify_evict): New declaration. * libpager/priv.h (struct pager): New `notify_on_evict' member. * storeio/pager.c: (pager_notify_evict): New function. (dev_get_memory_object): Update call to pager_create. * tmpfs/pager-stubs.c (pager_notify_evict): New function. * ufs/pager.c (pager_notify_evict): New function. (create_disk_pager): Update call to diskfs_start_disk_pager. (diskfs_get_filemap): Update call to pager_create. --- libpager/pager-create.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'libpager/pager-create.c') diff --git a/libpager/pager-create.c b/libpager/pager-create.c index 318c9f15..1aea6e96 100644 --- a/libpager/pager-create.c +++ b/libpager/pager-create.c @@ -22,7 +22,8 @@ struct pager * pager_create (struct user_pager_info *upi, struct port_bucket *bucket, boolean_t may_cache, - memory_object_copy_strategy_t copy_strategy) + memory_object_copy_strategy_t copy_strategy, + boolean_t notify_on_evict) { struct pager *p; @@ -38,6 +39,7 @@ pager_create (struct user_pager_info *upi, p->attribute_requests = 0; p->may_cache = may_cache; p->copy_strategy = copy_strategy; + p->notify_on_evict = notify_on_evict; p->memobjcntl = MACH_PORT_NULL; p->memobjname = MACH_PORT_NULL; p->seqno = -1; -- cgit v1.2.3