summaryrefslogtreecommitdiff
path: root/libdiskfs/diskfs-pager.h
AgeCommit message (Collapse)Author
2015-09-06Fix race condition in ext2fs when remountingJames Clarke
On some systems, ext2fs.static would regularly hang at startup, as a race condition meant it would process paging requests while remounting. To fix this, libpager has been altered to allow inhibiting and resuming its worker threads, and ext2fs uses this to inhibit paging while remounting. * console/pager.c (pager_requests): New variable. (user_pager_init): Updated call to pager_start_workers to use new pager_requests variable. * daemons/runsystem.sh: Removed artificial delay working around the race condition. * ext2fs/ext2fs.c (diskfs_reload_global_state): Call new inhibit_ext2_pager and resume_ext2_pager functions, and leave sblock as non-NULL so it will be munmapped. * ext2fs/ext2fs.h (inhibit_ext2_pager,resume_ext2_pager): New functions. * ext2fs/pager.c (file_pager_requests): New variable. (create_disk_pager): Updated call to pager_start_workers to use new file_pager_requests variable. (inhibit_ext2_pager,resume_ext2_pager): New functions. * fatfs/fatfs.h (inhibit_fat_pager,resume_fat_pager): New functions. * fatfs/pager.c (file_pager_requests): New variable. (create_fat_pager): Updated call to pager_start_workers to use new file_pager_requests variable. (inhibit_fat_pager,resume_fat_pager): New functions. * libdiskfs/disk-pager.c (diskfs_disk_pager_requests): New variable. (diskfs_start_disk_pager): Updated call to pager_start_workers to use new diskfs_disk_pager_requests variable. * libdiskfs/diskfs-pager.h (diskfs_disk_pager_requests): New variable. * libpager/demuxer.c (struct pager_requests): Renamed struct requests to struct pager_requests. Replaced queue with queue_in and queue_out pointers. Added inhibit_wakeup field. (pager_demuxer): Updated to use new queue_in/queue_out pointers. Only wake up workers if not inhibited. (worker_func): Updated to use new queue_in/queue_out pointers. Final worker thread to sleep notifies the inhibit_wakeup condition variable. (pager_start_workers): Added out parameter for the requests instance. Allocate heap space shared by both queues. Initialise new inhibit_wakeup condition. (pager_inhibit_workers,pager_resume_workers): New functions. * libpager/pager.h (struct pager_requests): Public forward definition. (pager_start_workers): Added out parameter for the requests instance. (pager_inhibit_workers,pager_resume_workers): New functions. * libpager/queue.h (queue_empty): New function. * storeio/pager.c (pager_requests): New variable. (init_dev_paging): Updated call to pager_start_workers to use new pager_requests variable.
2013-09-16Handle notification on page evictionRichard Braun
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.
2012-11-27Switch from cthreads to pthreadsRichard Braun
Makefiles, headers, types, macros and function calls are renamed where appropriate. Most of this work was done by Barry deFreese and Thomas DiModica. * auth/Makefile: Switch from cthreads to pthreads. * auth/auth.c: Likewise. * boot/Makefile: Likewise. * boot/boot.c: Likewise. * boot/ux.c: Likewise. * console-client/Makefile: Likewise. * console-client/console.c: Likewise. * console-client/driver.c: Likewise. * console-client/driver.h: Likewise. * console-client/generic-speaker.c: Likewise. * console-client/kbd-repeat.c: Likewise. * console-client/ncursesw.c: Likewise. * console-client/pc-kbd.c: Likewise. * console-client/pc-mouse.c: Likewise. * console-client/timer.c: Likewise. * console-client/trans.c: Likewise. * console-client/vga.c: Likewise. * console/Makefile: Likewise. * console/console.c: Likewise. * console/display.c: Likewise. * console/input.c: Likewise. * console/pager.c: Likewise. * defpager/backing.c: Likewise. * exec/Makefile: Likewise. * exec/exec.c: Likewise. * exec/hashexec.c: Likewise. * exec/priv.h: Likewise. * ext2fs/Makefile: Likewise. * ext2fs/balloc.c: Likewise. * ext2fs/dir.c: Likewise. * ext2fs/ext2fs.c: Likewise. * ext2fs/ext2fs.h: Likewise. * ext2fs/ialloc.c: Likewise. * ext2fs/inode.c: Likewise. * ext2fs/msg.c: Likewise. * ext2fs/pager.c: Likewise. * ext2fs/pokel.c: Likewise. * ext2fs/storeinfo.c: Likewise. * ext2fs/truncate.c: Likewise. * fatfs/Makefile: Likewise. * fatfs/dir.c: Likewise. * fatfs/fat.c: Likewise. * fatfs/fatfs.h: Likewise. * fatfs/inode.c: Likewise. * fatfs/main.c: Likewise. * fatfs/pager.c: Likewise. * fatfs/virt-inode.c: Likewise. * ftpfs/Makefile: Likewise. * ftpfs/ccache.c: Likewise. * ftpfs/ccache.h: Likewise. * ftpfs/conn.c: Likewise. * ftpfs/dir.c: Likewise. * ftpfs/fs.c: Likewise. * ftpfs/ftpfs.c: Likewise. * ftpfs/ftpfs.h: Likewise. * ftpfs/ncache.c: Likewise. * ftpfs/netfs.c: Likewise. * ftpfs/node.c: Likewise. * hostmux/Makefile: Likewise. * hostmux/hostmux.h: Likewise. * hostmux/mux.c: Likewise. * hostmux/node.c: Likewise. * hostmux/stubs.c: Likewise. * hurd/shared.h: Likewise. * isofs/Makefile: Likewise. * isofs/inode.c: Likewise. * isofs/lookup.c: Likewise. * isofs/main.c: Likewise. * isofs/pager.c: Likewise. * libcons/Makefile: Likewise. * libcons/cons-switch.c: Likewise. * libcons/cons.h: Likewise. * libcons/dir-changed.c: Likewise. * libcons/file-changed.c: Likewise. * libcons/init-init.c: Likewise. * libcons/vcons-close.c: Likewise. * libcons/vcons-input.c: Likewise. * libcons/vcons-move-mouse.c: Likewise. * libcons/vcons-open.c: Likewise. * libcons/vcons-scrollback.c: Likewise. * libdiskfs/Makefile: Likewise. * libdiskfs/boot-start.c: Likewise. * libdiskfs/dead-name.c: Likewise. * libdiskfs/dir-chg.c: Likewise. * libdiskfs/dir-link.c: Likewise. * libdiskfs/dir-lookup.c: Likewise. * libdiskfs/dir-mkdir.c: Likewise. * libdiskfs/dir-mkfile.c: Likewise. * libdiskfs/dir-readdir.c: Likewise. * libdiskfs/dir-rename.c: Likewise. * libdiskfs/dir-renamed.c: Likewise. * libdiskfs/dir-rmdir.c: Likewise. * libdiskfs/dir-unlink.c: Likewise. * libdiskfs/disk-pager.c: Likewise. * libdiskfs/diskfs-pager.h: Likewise. * libdiskfs/diskfs.h: Likewise. * libdiskfs/file-access.c: Likewise. * libdiskfs/file-chg.c: Likewise. * libdiskfs/file-exec.c: Likewise. * libdiskfs/file-get-fs-opts.c: Likewise. * libdiskfs/file-get-trans.c: Likewise. * libdiskfs/file-get-transcntl.c: Likewise. * libdiskfs/file-getcontrol.c: Likewise. * libdiskfs/file-getfh.c: Likewise. * libdiskfs/file-lock-stat.c: Likewise. * libdiskfs/file-lock.c: Likewise. * libdiskfs/file-reparent.c: Likewise. * libdiskfs/file-set-trans.c: Likewise. * libdiskfs/file-sync.c: Likewise. * libdiskfs/file-syncfs.c: Likewise. * libdiskfs/fsys-getroot.c: Likewise. * libdiskfs/fsys-options.c: Likewise. * libdiskfs/fsys-syncfs.c: Likewise. * libdiskfs/ifsock.c: Likewise. * libdiskfs/init-first.c: Likewise. * libdiskfs/init-init.c: Likewise. * libdiskfs/init-startup.c: Likewise. * libdiskfs/io-duplicate.c: Likewise. * libdiskfs/io-get-conch.c: Likewise. * libdiskfs/io-identity.c: Likewise. * libdiskfs/io-map-cntl.c: Likewise. * libdiskfs/io-map.c: Likewise. * libdiskfs/io-modes-get.c: Likewise. * libdiskfs/io-modes-off.c: Likewise. * libdiskfs/io-modes-on.c: Likewise. * libdiskfs/io-modes-set.c: Likewise. * libdiskfs/io-owner-get.c: Likewise. * libdiskfs/io-owner-mod.c: Likewise. * libdiskfs/io-prenotify.c: Likewise. * libdiskfs/io-read.c: Likewise. * libdiskfs/io-readable.c: Likewise. * libdiskfs/io-reauthenticate.c: Likewise. * libdiskfs/io-rel-conch.c: Likewise. * libdiskfs/io-restrict-auth.c: Likewise. * libdiskfs/io-revoke.c: Likewise. * libdiskfs/io-seek.c: Likewise. * libdiskfs/io-sigio.c: Likewise. * libdiskfs/io-stat.c: Likewise. * libdiskfs/io-write.c: Likewise. * libdiskfs/lookup.c: Likewise. * libdiskfs/name-cache.c: Likewise. * libdiskfs/node-drop.c: Likewise. * libdiskfs/node-make.c: Likewise. * libdiskfs/node-nput.c: Likewise. * libdiskfs/node-nputl.c: Likewise. * libdiskfs/node-nref.c: Likewise. * libdiskfs/node-nrefl.c: Likewise. * libdiskfs/node-nrele.c: Likewise. * libdiskfs/node-nrelel.c: Likewise. * libdiskfs/peropen-rele.c: Likewise. * libdiskfs/priv.h: Likewise. * libdiskfs/shutdown.c: Likewise. * libdiskfs/sync-interval.c: Likewise. * libfshelp/Makefile: Likewise. * libfshelp/fetch-root.c: Likewise. * libfshelp/fshelp.h: Likewise. * libfshelp/get-identity.c: Likewise. * libfshelp/lock-acquire.c: Likewise. * libfshelp/lock-init.c: Likewise. * libfshelp/locks.h: Likewise. * libfshelp/set-active.c: Likewise. * libfshelp/trans.h: Likewise. * libfshelp/transbox-init.c: Likewise. * libiohelp/Makefile: Likewise. * libiohelp/get_conch.c: Likewise. * libiohelp/handle_io_release_conch.c: Likewise. * libiohelp/initialize_conch.c: Likewise. * libiohelp/iohelp.h: Likewise. * libiohelp/verify_user_conch.c: Likewise. * libnetfs/Makefile: Likewise. * libnetfs/dir-lookup.c: Likewise. * libnetfs/dir-mkdir.c: Likewise. * libnetfs/dir-mkfile.c: Likewise. * libnetfs/dir-readdir.c: Likewise. * libnetfs/dir-rmdir.c: Likewise. * libnetfs/dir-unlink.c: Likewise. * libnetfs/drop-node.c: Likewise. * libnetfs/file-chauthor.c: Likewise. * libnetfs/file-check-access.c: Likewise. * libnetfs/file-chflags.c: Likewise. * libnetfs/file-chmod.c: Likewise. * libnetfs/file-chown.c: Likewise. * libnetfs/file-exec.c: Likewise. * libnetfs/file-get-storage-info.c: Likewise. * libnetfs/file-get-translator.c: Likewise. * libnetfs/file-lock-stat.c: Likewise. * libnetfs/file-lock.c: Likewise. * libnetfs/file-reparent.c: Likewise. * libnetfs/file-set-size.c: Likewise. * libnetfs/file-set-translator.c: Likewise. * libnetfs/file-statfs.c: Likewise. * libnetfs/file-sync.c: Likewise. * libnetfs/file-syncfs.c: Likewise. * libnetfs/file-utimes.c: Likewise. * libnetfs/fsys-getroot.c: Likewise. * libnetfs/fsys-set-options.c: Likewise. * libnetfs/init-init.c: Likewise. * libnetfs/io-clear-some-openmodes.c: Likewise. * libnetfs/io-duplicate.c: Likewise. * libnetfs/io-get-openmodes.c: Likewise. * libnetfs/io-get-owner.c: Likewise. * libnetfs/io-identity.c: Likewise. * libnetfs/io-mod-owner.c: Likewise. * libnetfs/io-read.c: Likewise. * libnetfs/io-readable.c: Likewise. * libnetfs/io-reauthenticate.c: Likewise. * libnetfs/io-restrict-auth.c: Likewise. * libnetfs/io-revoke.c: Likewise. * libnetfs/io-seek.c: Likewise. * libnetfs/io-set-all-openmodes.c: Likewise. * libnetfs/io-set-some-openmodes.c: Likewise. * libnetfs/io-stat.c: Likewise. * libnetfs/io-write.c: Likewise. * libnetfs/make-node.c: Likewise. * libnetfs/netfs.h: Likewise. * libnetfs/nput.c: Likewise. * libnetfs/nref.c: Likewise. * libnetfs/nrele.c: Likewise. * libnetfs/release-peropen.c: Likewise. * libnetfs/shutdown.c: Likewise. * libpager/Makefile: Likewise. * libpager/chg-compl.c: Likewise. * libpager/clean.c: Likewise. * libpager/data-request.c: Likewise. * libpager/data-return.c: Likewise. * libpager/data-unlock.c: Likewise. * libpager/inhibit-term.c: Likewise. * libpager/lock-completed.c: Likewise. * libpager/lock-object.c: Likewise. * libpager/mark-error.c: Likewise. * libpager/no-senders.c: Likewise. * libpager/object-init.c: Likewise. * libpager/object-terminate.c: Likewise. * libpager/offer-page.c: Likewise. * libpager/pager-attr.c: Likewise. * libpager/pager-create.c: Likewise. * libpager/pager-shutdown.c: Likewise. * libpager/priv.h: Likewise. * libpager/seqnos.c: Likewise. * libpipe/Makefile: Likewise. * libpipe/pipe.c: Likewise. * libpipe/pipe.h: Likewise. * libports/Makefile: Likewise. * libports/begin-rpc.c: Likewise. * libports/bucket-iterate.c: Likewise. * libports/claim-right.c: Likewise. * libports/class-iterate.c: Likewise. * libports/complete-deallocate.c: Likewise. * libports/count-bucket.c: Likewise. * libports/count-class.c: Likewise. * libports/create-bucket.c: Likewise. * libports/create-internal.c: Likewise. * libports/destroy-right.c: Likewise. * libports/enable-bucket.c: Likewise. * libports/enable-class.c: Likewise. * libports/end-rpc.c: Likewise. * libports/get-right.c: Likewise. * libports/import-port.c: Likewise. * libports/inhibit-all-rpcs.c: Likewise. * libports/inhibit-bucket-rpcs.c: Likewise. * libports/inhibit-class-rpcs.c: Likewise. * libports/inhibit-port-rpcs.c: Likewise. * libports/init.c: Likewise. * libports/interrupt-notified-rpcs.c: Likewise. * libports/interrupt-on-notify.c: Likewise. * libports/interrupt-operation.c: Likewise. * libports/interrupt-rpcs.c: Likewise. * libports/interrupted.c: Likewise. * libports/lookup-port.c: Likewise. * libports/manage-multithread.c: Likewise. * libports/no-senders.c: Likewise. * libports/port-deref-weak.c: Likewise. * libports/port-deref.c: Likewise. * libports/port-ref-weak.c: Likewise. * libports/port-ref.c: Likewise. * libports/ports.h: Likewise. * libports/reallocate-from-external.c: Likewise. * libports/reallocate-port.c: Likewise. * libports/resume-all-rpcs.c: Likewise. * libports/resume-bucket-rpcs.c: Likewise. * libports/resume-class-rpcs.c: Likewise. * libports/resume-port-rpcs.c: Likewise. * libports/stubs.c: Likewise. * libports/transfer-right.c: Likewise. * libstore/Makefile: Likewise. * libstore/gunzip.c: Likewise. * libstore/part.c: Likewise. * libstore/unzipstore.c: Likewise. * libthreads/Makefile: Likewise. * libtreefs/dir-lookup.c: Likewise. * libtreefs/fsys-getroot.c: Likewise. * libtreefs/fsys-hooks.c: Likewise. * libtreefs/fsys.c: Likewise. * libtreefs/trans-help.c: Likewise. * libtreefs/trans-start.c: Likewise. * libtreefs/treefs.h: Likewise. * libtrivfs/cntl-create.c: Likewise. * libtrivfs/dyn-classes.c: Likewise. * libtrivfs/io-reauthenticate.c: Likewise. * libtrivfs/io-restrict-auth.c: Likewise. * libtrivfs/protid-clean.c: Likewise. * libtrivfs/protid-dup.c: Likewise. * libtrivfs/trivfs.h: Likewise. * mach-defpager/Makefile: Likewise. * mach-defpager/default_pager.c: Likewise. * mach-defpager/kalloc.c: Likewise. * mach-defpager/main.c: Likewise. * nfs/Makefile: Likewise. * nfs/cache.c: Likewise. * nfs/main.c: Likewise. * nfs/mount.c: Likewise. * nfs/name-cache.c: Likewise. * nfs/nfs.h: Likewise. * nfs/ops.c: Likewise. * nfs/rpc.c: Likewise. * nfsd/Makefile: Likewise. * nfsd/cache.c: Likewise. * nfsd/loop.c: Likewise. * nfsd/main.c: Likewise. * nfsd/nfsd.h: Likewise. * pfinet/Makefile: Likewise. * pfinet/ethernet.c: Likewise. * pfinet/glue-include/asm/spinlock.h: Likewise. * pfinet/glue-include/linux/interrupt.h: Likewise. * pfinet/glue-include/linux/sched.h: Likewise. * pfinet/glue-include/linux/timer.h: Likewise. * pfinet/glue-include/linux/wait.h: Likewise. * pfinet/iioctl-ops.c: Likewise. * pfinet/io-ops.c: Likewise. * pfinet/kmem_cache.c: Likewise. * pfinet/main.c: Likewise. * pfinet/options.c: Likewise. * pfinet/pfinet-ops.c: Likewise. * pfinet/pfinet.h: Likewise. * pfinet/sched.c: Likewise. * pfinet/socket-ops.c: Likewise. * pfinet/socket.c: Likewise. * pfinet/timer-emul.c: Likewise. * pfinet/tunnel.c: Likewise. * pflocal/Makefile: Likewise. * pflocal/connq.c: Likewise. * pflocal/io.c: Likewise. * pflocal/sock.c: Likewise. * pflocal/sock.h: Likewise. * pflocal/socket.c: Likewise. * pflocal/sserver.c: Likewise. * proc/Makefile: Likewise. * proc/info.c: Likewise. * proc/main.c: Likewise. * proc/mgt.c: Likewise. * proc/msg.c: Likewise. * proc/proc.h: Likewise. * proc/stubs.c: Likewise. * proc/wait.c: Likewise. * storeio/Makefile: Likewise. * storeio/dev.c: Likewise. * storeio/dev.h: Likewise. * storeio/open.c: Likewise. * storeio/open.h: Likewise. * storeio/pager.c: Likewise. * storeio/storeio.c: Likewise. * term/Makefile: Likewise. * term/devio.c: Likewise. * term/hurdio.c: Likewise. * term/main.c: Likewise. * term/munge.c: Likewise. * term/ptyio.c: Likewise. * term/term.h: Likewise. * term/users.c: Likewise. * tmpfs/Makefile: Likewise. * tmpfs/dir.c: Likewise. * tmpfs/node.c: Likewise. * tmpfs/tmpfs.c: Likewise. * tmpfs/tmpfs.h: Likewise. * trans/Makefile: Likewise. * trans/fakeroot.c: Likewise. * trans/fifo.c: Likewise. * trans/hello-mt.c: Likewise. * trans/new-fifo.c: Likewise. * trans/streamio.c: Likewise. * ufs/Makefile: Likewise. * ufs/alloc.c: Likewise. * ufs/dir.c: Likewise. * ufs/hyper.c: Likewise. * ufs/inode.c: Likewise. * ufs/main.c: Likewise. * ufs/pager.c: Likewise. * ufs/pokeloc.c: Likewise. * ufs/sizes.c: Likewise. * ufs/ufs.h: Likewise. * usermux/Makefile: Likewise. * usermux/mux.c: Likewise. * usermux/node.c: Likewise. * usermux/usermux.h: Likewise. * utils/Makefile: Likewise. * utils/fakeauth.c: Likewise. * utils/rpctrace.c: Likewise.
1997-02-05Doc fix.Miles Bader
1996-09-23(diskfs_disk_pager):Miles Bader
Renamed from disk_pager. (diskfs_start_disk_pager): Renamed from disk_pager_setup. Add PAGER_BUCKET, IMAGE, and SIZE arguments. (disk_image, pager_bucket): Declarations removed.
1996-07-17(struct disk_image_user): New type.Roland McGrath
(diskfs_catch_exception, diskfs_end_catch_exception): Use it to maintain a linked list of catchers instead of just one.
1996-01-05(diskfs_end_catch_exception): Pass arg to cthread_data.Roland McGrath
1996-01-05Initial revisionRoland McGrath