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| author | Richard Braun <rbraun@sceen.net> | 2013-05-03 19:56:50 +0200 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2013-09-16 01:22:20 +0200 |
| commit | 0e847864cef404f555387d7fcc97f7dbe769e1e9 (patch) | |
| tree | dbafbabcd1491b4840914d60358cf153beed9af8 /storeio/pager.c | |
| parent | b2e27fcee4cec98ffc39273ecfaa73aace9da2c3 (diff) | |
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.
Diffstat (limited to 'storeio/pager.c')
| -rw-r--r-- | storeio/pager.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/storeio/pager.c b/storeio/pager.c index cbae7eb6..7d787110 100644 --- a/storeio/pager.c +++ b/storeio/pager.c @@ -110,6 +110,13 @@ pager_unlock_page (struct user_pager_info *upi, vm_offset_t address) return 0; } +void +pager_notify_evict (struct user_pager_info *pager, + vm_offset_t page) +{ + assert (!"unrequested notification on eviction"); +} + /* The user must define this function. It should report back (in *OFFSET and *SIZE the minimum valid address the pager will accept and the size of the object. */ @@ -246,7 +253,7 @@ dev_get_memory_object (struct dev *dev, vm_prot_t prot, memory_object_t *memobj) { dev->pager = pager_create ((struct user_pager_info *)dev, pager_port_bucket, - 1, MEMORY_OBJECT_COPY_DELAY); + 1, MEMORY_OBJECT_COPY_DELAY, 0); if (dev->pager == NULL) { pthread_mutex_unlock (&dev->pager_lock); |