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authorkaf24@scramble.cl.cam.ac.uk <kaf24@scramble.cl.cam.ac.uk>2003-03-25 14:10:16 +0000
committerkaf24@scramble.cl.cam.ac.uk <kaf24@scramble.cl.cam.ac.uk>2003-03-25 14:10:16 +0000
commit40d269696c5de58c38df86d11f7debfb970c474d (patch)
tree155601347e039cf9acc7533ed98c49376071c47d /old/xenolinux-2.4.16-sparse/mm/swapfile.c
parent82a3e7c6c21b9d8eddc706c652cf57f73de5af21 (diff)
downloadxen-40d269696c5de58c38df86d11f7debfb970c474d.tar.gz
xen-40d269696c5de58c38df86d11f7debfb970c474d.tar.bz2
xen-40d269696c5de58c38df86d11f7debfb970c474d.zip
bitkeeper revision 1.160 (3e806348iI6F7p-OrCqKtE4h8_NgxQ)
.del-xor.h~2cd144e48fc282fb: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/xor.h .del-vga.h~f739bcd0d15a060b: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/vga.h .del-user.h~2416efc51bfdf653: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/user.h .del-unistd.h~542a4265bbde875f: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/unistd.h .del-unaligned.h~3720d8e6f6489c70: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/unaligned.h .del-ucontext.h~7c514eccb96e5c2c: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/ucontext.h .del-uaccess.h~1db7128cf065d28: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/uaccess.h .del-types.h~6f89af02373cf40e: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/types.h .del-tlb.h~36a10111face8cf8: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/tlb.h .del-timex.h~14ba40d5403480f8: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/timex.h .del-termios.h~10cb1919354bb3c: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/termios.h .del-termbits.h~9f49d578b6425137: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/termbits.h .del-system.h~1209f9cb8d09be: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/system.h .del-swapfile.c~28c1c327b22a067f: Delete: old/xenolinux-2.4.16-sparse/mm/swapfile.c .del-string.h~1bd164bf2f37435a: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/string.h .del-string-486.h~70f2949afd4c7217: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/string-486.h .del-statfs.h~925b3af593956e2d: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/statfs.h .del-stat.h~e85bc81529de3a4a: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/stat.h .del-panic.c~5033fabb3f2e710c: Delete: old/xenolinux-2.4.16-sparse/kernel/panic.c .del-mremap.c~5787787c5a3b49d: Delete: old/xenolinux-2.4.16-sparse/mm/mremap.c .del-memory.c~ec1a749ca2ed8acd: Delete: old/xenolinux-2.4.16-sparse/mm/memory.c .del-major.h~7653e946e9bf8159: Delete: old/xenolinux-2.4.16-sparse/include/linux/major.h .del-main.c~de169eb833d5a5cb: Delete: old/xenolinux-2.4.16-sparse/init/main.c .del-debug.h~e0aa141e34ec6221: Delete: old/xenolinux-2.4.16-sparse/include/linux/sunrpc/debug.h .del-blk.h~87e7b6403472571f: Delete: old/xenolinux-2.4.16-sparse/include/linux/blk.h .del-spinlock.h~fc0a4c0ddea83815: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/spinlock.h .del-softirq.h~c188e7ac18c858a9: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/softirq.h .del-sockios.h~65e1b7ba563df2c: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/sockios.h .del-socket.h~e3ba5757776f00c: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/socket.h .del-smplock.h~72176dfb8142375e: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/smplock.h .del-smp.h~80313a5f7eb193bb: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/smp.h .del-signal.h~2f1c9e8a4364ed8: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/signal.h .del-siginfo.h~348801659d7e1334: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/siginfo.h .del-sigcontext.h~1b647a394613b0dc: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/sigcontext.h .del-shmparam.h~c83ce37d9b16061c: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/shmparam.h .del-shmbuf.h~3ff48e518b9ecb0a: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/shmbuf.h .del-setup.h~2d7d5e0b8c7c48dc: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/setup.h .del-serial.h~90dee919c827ab29: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/serial.h .del-sembuf.h~f0fa7347b9fc071: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/sembuf.h .del-semaphore.h~d9f40f7e118c9d3c: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/semaphore.h .del-segment.h~cc492acab0d69477: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/segment.h .del-scatterlist.h~4be6ff4f53a3579b: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/scatterlist.h .del-rwsem.h~c9865b4ec1423b3a: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/rwsem.h .del-rwlock.h~3e6f58ae32c920e9: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/rwlock.h .del-resource.h~7e8eaa833cc25dca: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/resource.h .del-ptrace.h~c55079be77b9ee19: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/ptrace.h .del-processor.h~52612a255dfb7cbb: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/processor.h .del-posix_types.h~b6e7c803f3dbab8: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/posix_types.h .del-poll.h~f9b451e3ea9e50c: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/poll.h .del-pgtable.h~43ac63ace2e93820: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/pgtable.h .del-pgtable-3level.h~abbe18b96121bd83: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/pgtable-3level.h .del-pgtable-2level.h~8fe0307e54d8bf9b: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/pgtable-2level.h .del-pgalloc.h~9e75e06aeb89d316: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/pgalloc.h .del-parport.h~cff09d1bc0f89454: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/parport.h .del-param.h~471736b770596742: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/param.h .del-page.h~865cbedbe3bc818e: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/page.h .del-namei.h~38354dac74ae2dd8: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/namei.h .del-mtrr.h~ea4e1ec9703521e8: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/mtrr.h .del-msr.h~a6998ff4f5da0e0c: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/msr.h .del-msgbuf.h~5da37442976489a0: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/msgbuf.h .del-mpspec.h~381f4baa7d484bfb: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/mpspec.h .del-module.h~5a2fa3572f0b6bae: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/module.h .del-mmx.h~ef22db6d3bb87f3a: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/mmx.h .del-mmu_context.h~9fbf061b3d508d67: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/mmu_context.h .del-mmu.h~ba2b86348e168416: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/mmu.h .del-mman.h~18ee2a138def6b36: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/mman.h .del-mca_dma.h~eddb775e770502cb: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/mca_dma.h .del-mc146818rtc.h~c21b56e82a291c22: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/mc146818rtc.h .del-math_emu.h~4613a62a919e4aa1: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/math_emu.h .del-locks.h~399a95316c4c9ba7: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/locks.h .del-linux_logo.h~a388673ba10b8bf8: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/linux_logo.h .del-ldt.h~c03c75bf2fa23f40: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/ldt.h .del-kmap_types.h~eed873e2f55dcd50: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/kmap_types.h .del-keyboard.h~3d6d63ef29bf066c: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/keyboard.h .del-kdbprivate.h~8d8ff2e38b419e4c: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/kdbprivate.h .del-kdb.h~1981de7db9b5d353: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/kdb.h .del-irq.h~4702eca4cd45e793: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/irq.h .del-ipcbuf.h~f3ed215ace7ac98f: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/ipcbuf.h .del-ipc.h~8e9498e43aadf144: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/ipc.h .del-ioctls.h~263229b882e93cfd: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/ioctls.h .del-ioctl.h~bac00725b5ef0269: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/ioctl.h .del-io_apic.h~d3ebb23a7540d727: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/io_apic.h .del-io.h~28def6bcf143a288: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/io.h .del-init.h~f94c9cf325ec8a73: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/init.h .del-ide.h~1f18b51858f7de58: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/ide.h .del-i387.h~a09953497f47e974: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/i387.h .del-hypervisor.h~d2b860c8a01e7b7d: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/hypervisor.h .del-hypervisor-ifs~7df8ec9215cf9987: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/hypervisor-ifs .del-hw_irq.h~85b1e98ab3922232: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/hw_irq.h .del-highmem.h~961c664eb3006cf6: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/highmem.h .del-hdreg.h~af3fea048084de8c: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/hdreg.h .del-hardirq.h~b78749db9e13d06: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/hardirq.h .del-floppy.h~fc1f18b688d0a155: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/floppy.h .del-fixmap.h~63fec5045e83d303: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/fixmap.h .del-fcntl.h~5e345023494b641: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/fcntl.h .del-errno.h~2d307a9167d276be: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/errno.h .del-elf.h~5b4118314cd7dda8: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/elf.h .del-dma.h~bfdf9bdb575308fb: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/dma.h .del-div64.h~e6438de5f5adcdad: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/div64.h .del-desc.h~b339bfef4b0848b3: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/desc.h .del-delay.h~4f5c1f98fef9f480: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/delay.h .del-debugreg.h~94ad0b2f7ce81945: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/debugreg.h .del-current.h~4693f192fd42b4a6: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/current.h .del-cpufeature.h~9ee68ee4f8b525fd: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/cpufeature.h .del-checksum.h~db4bcfc8958c5d3f: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/checksum.h .del-cache.h~64626a79a0712d70: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/cache.h .del-byteorder.h~404697d4e47c3345: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/byteorder.h .del-bugs.h~df29bf2b4f74ccaf: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/bugs.h .del-boot.h~c7462d481f4a9: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/boot.h .del-bitops.h~ef7ea34f8a17ed86: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/bitops.h .del-atomic.h~55cde2d93d09526: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/atomic.h .del-apicdef.h~4ce7611333e9d1fc: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/apicdef.h .del-usercopy.c~b60ef441a832ff84: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/lib/usercopy.c .del-tty_io.c~b7ee058bd0b4d969: Delete: old/xenolinux-2.4.16-sparse/drivers/char/tty_io.c .del-traps.c~58f6978ca3914806: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/traps.c .del-time.c~8772141ba7a5b7be: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/time.c .del-sys_i386.c~f84bd504c2085dda: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/sys_i386.c .del-strstr.c~e80f16ebdccc4062: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/lib/strstr.c .del-signal.c~45454d7374cce0a1: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/signal.c .del-setup.c~6f22e121db6f1bc: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/setup.c .del-semaphore.c~3e7a2194beb1c8e4: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/semaphore.c .del-rd.c~99ae381b254bd356: Delete: old/xenolinux-2.4.16-sparse/drivers/block/rd.c .del-ptrace.c~8cb5d0b722ab58b9: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/ptrace.c .del-process.c~ab23652fb4106ce3: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/process.c .del-old-checksum.c~c3dfe224f68ed131: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/lib/old-checksum.c .del-mmx.c~3f27e7b4c5f3d68d: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/lib/mmx.c .del-mmu_context.c~ef75b8e1f894e729: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/mm/mmu_context.c .del-memcpy.c~91d0cb7e4e922f6e: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/lib/memcpy.c .del-ll_rw_blk.c~2c64b7fc36db523: Delete: old/xenolinux-2.4.16-sparse/drivers/block/ll_rw_blk.c .del-ldt.c~102d26cc1b63c830: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/ldt.c .del-irq.c~2bd9b09d889fd6b8: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/irq.c .del-ioport.c~2d86d4fbba2e2583: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/ioport.c .del-iodebug.c~982cc58799104651: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/lib/iodebug.c .del-init_task.c~53258077ed40d6be: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/init_task.c .del-init.c~3693c99014d6fc0d: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/mm/init.c .del-i387.c~571a2fa27676375: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/i387.c .del-i386_ksyms.c~68a55ed15a69598: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/i386_ksyms.c .del-hypervisor.c~a227c7d0b6a5fd42: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/mm/hypervisor.c .del-getuser.S~1ef189b582390381: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/lib/getuser.S .del-get_unmapped_area.c~3ad7561469aabec: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/mm/get_unmapped_area.c .del-fault.c~4f5a4a1859484525: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/mm/fault.c .del-extable.c~b98087717f427f26: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/mm/extable.c .del-exec.c~2557f6564ffdb2e0: Delete: old/xenolinux-2.4.16-sparse/fs/exec.c .del-delay.c~bddd92dcfafdf5ce: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/lib/delay.c .del-dec_and_lock.c~5ac45f1c3a6593c: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/lib/dec_and_lock.c .del-checksum.S~be8f8ce2d8964249: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/lib/checksum.S .del-apic.h~7e52954d00c0c4f: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/apic.h .del-a.out.h~7ace48e4361e6b64: Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/a.out.h .del-Makefile~92a08e51252c8752: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/lib/Makefile .del-Makefile~4b457be6621a5d5a: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/mm/Makefile .del-Config.in~e79aa726643e8d8f: Delete: old/xenolinux-2.4.16-sparse/drivers/block/Config.in .del-xl_block_test.c~aac5669d8f638637: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/drivers/block/xl_block_test.c .del-xl_block.c~cee1f87e3b5f99a: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/drivers/block/xl_block.c .del-vmlinux.lds~95fa124a7440e17f: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/vmlinux.lds .del-vfr.c~32830c0144380827: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/drivers/dom0/vfr.c .del-network.c~cc961aaabe0a0a77: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/drivers/network/network.c .del-mk~196fb97e64c3e303: Delete: old/xenolinux-2.4.16-sparse/mk .del-hypervisor.c~78a3960ab18cdbd5: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/hypervisor.c .del-head.S~7976f74358c43bf7: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/head.S .del-entry.S~126fc1af28caab2f: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/entry.S .del-dom0_ops.h~ebc6f2ba40efd4f8: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/drivers/dom0/dom0_ops.h .del-dom0_memory.c~89a290b73b42dafb: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/drivers/dom0/dom0_memory.c .del-dom0_core.c~b6447635a1dff297: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/drivers/dom0/dom0_core.c .del-dom0_block.c~56aa20e79fb98f4a: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/drivers/dom0/dom0_block.c .del-defconfig~4e50d7fc220d1aab: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/defconfig .del-console.c~de0ee868d96d8dbe: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/drivers/console/console.c .del-config.in~4afe788e4691d222: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/config.in .del-Makefile~fda4420ca7a5c777: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/drivers/dom0/Makefile .del-Makefile~d7ea62ca90003f31: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/boot/Makefile .del-Makefile~c6614e5f6a40fe8: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/drivers/console/Makefile .del-Makefile~8f946627850d08: Delete: old/xenolinux-2.4.16-sparse/Makefile .del-Makefile~4b0def0c8c803698: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/drivers/block/Makefile .del-Makefile~40bc4fd761c2e3e4: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/Makefile .del-Makefile~225ee771b0fb73fa: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/Makefile .del-Makefile~1d57425ac7aac33: Delete: old/xenolinux-2.4.16-sparse/arch/xeno/drivers/network/Makefile
Diffstat (limited to 'old/xenolinux-2.4.16-sparse/mm/swapfile.c')
-rw-r--r--old/xenolinux-2.4.16-sparse/mm/swapfile.c1291
1 files changed, 0 insertions, 1291 deletions
diff --git a/old/xenolinux-2.4.16-sparse/mm/swapfile.c b/old/xenolinux-2.4.16-sparse/mm/swapfile.c
deleted file mode 100644
index 48846184d4..0000000000
--- a/old/xenolinux-2.4.16-sparse/mm/swapfile.c
+++ /dev/null
@@ -1,1291 +0,0 @@
-/*
- * linux/mm/swapfile.c
- *
- * Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds
- * Swap reorganised 29.12.95, Stephen Tweedie
- */
-
-#include <linux/slab.h>
-#include <linux/smp_lock.h>
-#include <linux/kernel_stat.h>
-#include <linux/swap.h>
-#include <linux/swapctl.h>
-#include <linux/blkdev.h> /* for blk_size */
-#include <linux/vmalloc.h>
-#include <linux/pagemap.h>
-#include <linux/shm.h>
-#include <linux/compiler.h>
-
-#include <asm/pgtable.h>
-
-spinlock_t swaplock = SPIN_LOCK_UNLOCKED;
-unsigned int nr_swapfiles;
-int total_swap_pages;
-static int swap_overflow;
-
-static const char Bad_file[] = "Bad swap file entry ";
-static const char Unused_file[] = "Unused swap file entry ";
-static const char Bad_offset[] = "Bad swap offset entry ";
-static const char Unused_offset[] = "Unused swap offset entry ";
-
-struct swap_list_t swap_list = {-1, -1};
-
-struct swap_info_struct swap_info[MAX_SWAPFILES];
-
-#define SWAPFILE_CLUSTER 256
-
-static inline int scan_swap_map(struct swap_info_struct *si)
-{
- unsigned long offset;
- /*
- * We try to cluster swap pages by allocating them
- * sequentially in swap. Once we've allocated
- * SWAPFILE_CLUSTER pages this way, however, we resort to
- * first-free allocation, starting a new cluster. This
- * prevents us from scattering swap pages all over the entire
- * swap partition, so that we reduce overall disk seek times
- * between swap pages. -- sct */
- if (si->cluster_nr) {
- while (si->cluster_next <= si->highest_bit) {
- offset = si->cluster_next++;
- if (si->swap_map[offset])
- continue;
- si->cluster_nr--;
- goto got_page;
- }
- }
- si->cluster_nr = SWAPFILE_CLUSTER;
-
- /* try to find an empty (even not aligned) cluster. */
- offset = si->lowest_bit;
- check_next_cluster:
- if (offset+SWAPFILE_CLUSTER-1 <= si->highest_bit)
- {
- int nr;
- for (nr = offset; nr < offset+SWAPFILE_CLUSTER; nr++)
- if (si->swap_map[nr])
- {
- offset = nr+1;
- goto check_next_cluster;
- }
- /* We found a completly empty cluster, so start
- * using it.
- */
- goto got_page;
- }
- /* No luck, so now go finegrined as usual. -Andrea */
- for (offset = si->lowest_bit; offset <= si->highest_bit ; offset++) {
- if (si->swap_map[offset])
- continue;
- si->lowest_bit = offset+1;
- got_page:
- if (offset == si->lowest_bit)
- si->lowest_bit++;
- if (offset == si->highest_bit)
- si->highest_bit--;
- if (si->lowest_bit > si->highest_bit) {
- si->lowest_bit = si->max;
- si->highest_bit = 0;
- }
- si->swap_map[offset] = 1;
- nr_swap_pages--;
- si->cluster_next = offset+1;
- return offset;
- }
- si->lowest_bit = si->max;
- si->highest_bit = 0;
- return 0;
-}
-
-swp_entry_t get_swap_page(void)
-{
- struct swap_info_struct * p;
- unsigned long offset;
- swp_entry_t entry;
- int type, wrapped = 0;
-
- entry.val = 0; /* Out of memory */
- swap_list_lock();
- type = swap_list.next;
- if (type < 0)
- goto out;
- if (nr_swap_pages <= 0)
- goto out;
-
- while (1) {
- p = &swap_info[type];
- if ((p->flags & SWP_WRITEOK) == SWP_WRITEOK) {
- swap_device_lock(p);
- offset = scan_swap_map(p);
- swap_device_unlock(p);
- if (offset) {
- entry = SWP_ENTRY(type,offset);
- type = swap_info[type].next;
- if (type < 0 ||
- p->prio != swap_info[type].prio) {
- swap_list.next = swap_list.head;
- } else {
- swap_list.next = type;
- }
- goto out;
- }
- }
- type = p->next;
- if (!wrapped) {
- if (type < 0 || p->prio != swap_info[type].prio) {
- type = swap_list.head;
- wrapped = 1;
- }
- } else
- if (type < 0)
- goto out; /* out of swap space */
- }
-out:
- swap_list_unlock();
- return entry;
-}
-
-static struct swap_info_struct * swap_info_get(swp_entry_t entry)
-{
- struct swap_info_struct * p;
- unsigned long offset, type;
-
- if (!entry.val)
- goto out;
- type = SWP_TYPE(entry);
- if (type >= nr_swapfiles)
- goto bad_nofile;
- p = & swap_info[type];
- if (!(p->flags & SWP_USED))
- goto bad_device;
- offset = SWP_OFFSET(entry);
- if (offset >= p->max)
- goto bad_offset;
- if (!p->swap_map[offset])
- goto bad_free;
- swap_list_lock();
- if (p->prio > swap_info[swap_list.next].prio)
- swap_list.next = type;
- swap_device_lock(p);
- return p;
-
-bad_free:
- printk(KERN_ERR "swap_free: %s%08lx\n", Unused_offset, entry.val);
- goto out;
-bad_offset:
- printk(KERN_ERR "swap_free: %s%08lx\n", Bad_offset, entry.val);
- goto out;
-bad_device:
- printk(KERN_ERR "swap_free: %s%08lx\n", Unused_file, entry.val);
- goto out;
-bad_nofile:
- printk(KERN_ERR "swap_free: %s%08lx\n", Bad_file, entry.val);
-out:
- return NULL;
-}
-
-static void swap_info_put(struct swap_info_struct * p)
-{
- swap_device_unlock(p);
- swap_list_unlock();
-}
-
-static int swap_entry_free(struct swap_info_struct *p, unsigned long offset)
-{
- int count = p->swap_map[offset];
-
- if (count < SWAP_MAP_MAX) {
- count--;
- p->swap_map[offset] = count;
- if (!count) {
- if (offset < p->lowest_bit)
- p->lowest_bit = offset;
- if (offset > p->highest_bit)
- p->highest_bit = offset;
- nr_swap_pages++;
- }
- }
- return count;
-}
-
-/*
- * Caller has made sure that the swapdevice corresponding to entry
- * is still around or has not been recycled.
- */
-void swap_free(swp_entry_t entry)
-{
- struct swap_info_struct * p;
-
- p = swap_info_get(entry);
- if (p) {
- swap_entry_free(p, SWP_OFFSET(entry));
- swap_info_put(p);
- }
-}
-
-/*
- * Check if we're the only user of a swap page,
- * when the page is locked.
- */
-static int exclusive_swap_page(struct page *page)
-{
- int retval = 0;
- struct swap_info_struct * p;
- swp_entry_t entry;
-
- entry.val = page->index;
- p = swap_info_get(entry);
- if (p) {
- /* Is the only swap cache user the cache itself? */
- if (p->swap_map[SWP_OFFSET(entry)] == 1) {
- /* Recheck the page count with the pagecache lock held.. */
- spin_lock(&pagecache_lock);
- if (page_count(page) - !!page->buffers == 2)
- retval = 1;
- spin_unlock(&pagecache_lock);
- }
- swap_info_put(p);
- }
- return retval;
-}
-
-/*
- * We can use this swap cache entry directly
- * if there are no other references to it.
- *
- * Here "exclusive_swap_page()" does the real
- * work, but we opportunistically check whether
- * we need to get all the locks first..
- */
-int can_share_swap_page(struct page *page)
-{
- int retval = 0;
-
- if (!PageLocked(page))
- BUG();
- switch (page_count(page)) {
- case 3:
- if (!page->buffers)
- break;
- /* Fallthrough */
- case 2:
- if (!PageSwapCache(page))
- break;
- retval = exclusive_swap_page(page);
- break;
- case 1:
- if (PageReserved(page))
- break;
- retval = 1;
- }
- return retval;
-}
-
-/*
- * Work out if there are any other processes sharing this
- * swap cache page. Free it if you can. Return success.
- */
-int remove_exclusive_swap_page(struct page *page)
-{
- int retval;
- struct swap_info_struct * p;
- swp_entry_t entry;
-
- if (!PageLocked(page))
- BUG();
- if (!PageSwapCache(page))
- return 0;
- if (page_count(page) - !!page->buffers != 2) /* 2: us + cache */
- return 0;
-
- entry.val = page->index;
- p = swap_info_get(entry);
- if (!p)
- return 0;
-
- /* Is the only swap cache user the cache itself? */
- retval = 0;
- if (p->swap_map[SWP_OFFSET(entry)] == 1) {
- /* Recheck the page count with the pagecache lock held.. */
- spin_lock(&pagecache_lock);
- if (page_count(page) - !!page->buffers == 2) {
- __delete_from_swap_cache(page);
- SetPageDirty(page);
- retval = 1;
- }
- spin_unlock(&pagecache_lock);
- }
- swap_info_put(p);
-
- if (retval) {
- block_flushpage(page, 0);
- swap_free(entry);
- page_cache_release(page);
- }
-
- return retval;
-}
-
-/*
- * Free the swap entry like above, but also try to
- * free the page cache entry if it is the last user.
- */
-void free_swap_and_cache(swp_entry_t entry)
-{
- struct swap_info_struct * p;
- struct page *page = NULL;
-
- p = swap_info_get(entry);
- if (p) {
- if (swap_entry_free(p, SWP_OFFSET(entry)) == 1)
- page = find_trylock_page(&swapper_space, entry.val);
- swap_info_put(p);
- }
- if (page) {
- page_cache_get(page);
- /* Only cache user (+us), or swap space full? Free it! */
- if (page_count(page) == 2 || vm_swap_full()) {
- delete_from_swap_cache(page);
- SetPageDirty(page);
- }
- UnlockPage(page);
- page_cache_release(page);
- }
-}
-
-/*
- * The swap entry has been read in advance, and we return 1 to indicate
- * that the page has been used or is no longer needed.
- *
- * Always set the resulting pte to be nowrite (the same as COW pages
- * after one process has exited). We don't know just how many PTEs will
- * share this swap entry, so be cautious and let do_wp_page work out
- * what to do if a write is requested later.
- */
-/* mmlist_lock and vma->vm_mm->page_table_lock are held */
-static inline void unuse_pte(struct vm_area_struct * vma, unsigned long address,
- pte_t *dir, swp_entry_t entry, struct page* page)
-{
- pte_t pte = *dir;
-
- if (likely(pte_to_swp_entry(pte).val != entry.val))
- return;
- if (unlikely(pte_none(pte) || pte_present(pte)))
- return;
- get_page(page);
- set_pte(dir, pte_mkold(mk_pte(page, vma->vm_page_prot)));
- swap_free(entry);
- ++vma->vm_mm->rss;
-}
-
-/* mmlist_lock and vma->vm_mm->page_table_lock are held */
-static inline void unuse_pmd(struct vm_area_struct * vma, pmd_t *dir,
- unsigned long address, unsigned long size, unsigned long offset,
- swp_entry_t entry, struct page* page)
-{
- pte_t * pte;
- unsigned long end;
-
- if (pmd_none(*dir))
- return;
- if (pmd_bad(*dir)) {
- pmd_ERROR(*dir);
- pmd_clear(dir);
- return;
- }
- pte = pte_offset(dir, address);
- offset += address & PMD_MASK;
- address &= ~PMD_MASK;
- end = address + size;
- if (end > PMD_SIZE)
- end = PMD_SIZE;
- do {
- unuse_pte(vma, offset+address-vma->vm_start, pte, entry, page);
- address += PAGE_SIZE;
- pte++;
- } while (address && (address < end));
-}
-
-/* mmlist_lock and vma->vm_mm->page_table_lock are held */
-static inline void unuse_pgd(struct vm_area_struct * vma, pgd_t *dir,
- unsigned long address, unsigned long size,
- swp_entry_t entry, struct page* page)
-{
- pmd_t * pmd;
- unsigned long offset, end;
-
- if (pgd_none(*dir))
- return;
- if (pgd_bad(*dir)) {
- pgd_ERROR(*dir);
- pgd_clear(dir);
- return;
- }
- pmd = pmd_offset(dir, address);
- offset = address & PGDIR_MASK;
- address &= ~PGDIR_MASK;
- end = address + size;
- if (end > PGDIR_SIZE)
- end = PGDIR_SIZE;
- if (address >= end)
- BUG();
- do {
- unuse_pmd(vma, pmd, address, end - address, offset, entry,
- page);
- address = (address + PMD_SIZE) & PMD_MASK;
- pmd++;
- } while (address && (address < end));
-}
-
-/* mmlist_lock and vma->vm_mm->page_table_lock are held */
-static void unuse_vma(struct vm_area_struct * vma, pgd_t *pgdir,
- swp_entry_t entry, struct page* page)
-{
- unsigned long start = vma->vm_start, end = vma->vm_end;
-
- if (start >= end)
- BUG();
- do {
- unuse_pgd(vma, pgdir, start, end - start, entry, page);
- start = (start + PGDIR_SIZE) & PGDIR_MASK;
- pgdir++;
- } while (start && (start < end));
-}
-
-static void unuse_process(struct mm_struct * mm,
- swp_entry_t entry, struct page* page)
-{
- struct vm_area_struct* vma;
-
- /*
- * Go through process' page directory.
- */
- spin_lock(&mm->page_table_lock);
- for (vma = mm->mmap; vma; vma = vma->vm_next) {
- pgd_t * pgd = pgd_offset(mm, vma->vm_start);
- unuse_vma(vma, pgd, entry, page);
- }
- XENO_flush_page_update_queue();
- spin_unlock(&mm->page_table_lock);
- return;
-}
-
-/*
- * Scan swap_map from current position to next entry still in use.
- * Recycle to start on reaching the end, returning 0 when empty.
- */
-static int find_next_to_unuse(struct swap_info_struct *si, int prev)
-{
- int max = si->max;
- int i = prev;
- int count;
-
- /*
- * No need for swap_device_lock(si) here: we're just looking
- * for whether an entry is in use, not modifying it; false
- * hits are okay, and sys_swapoff() has already prevented new
- * allocations from this area (while holding swap_list_lock()).
- */
- for (;;) {
- if (++i >= max) {
- if (!prev) {
- i = 0;
- break;
- }
- /*
- * No entries in use at top of swap_map,
- * loop back to start and recheck there.
- */
- max = prev + 1;
- prev = 0;
- i = 1;
- }
- count = si->swap_map[i];
- if (count && count != SWAP_MAP_BAD)
- break;
- }
- return i;
-}
-
-/*
- * We completely avoid races by reading each swap page in advance,
- * and then search for the process using it. All the necessary
- * page table adjustments can then be made atomically.
- */
-static int try_to_unuse(unsigned int type)
-{
- struct swap_info_struct * si = &swap_info[type];
- struct mm_struct *start_mm;
- unsigned short *swap_map;
- unsigned short swcount;
- struct page *page;
- swp_entry_t entry;
- int i = 0;
- int retval = 0;
- int reset_overflow = 0;
-
- /*
- * When searching mms for an entry, a good strategy is to
- * start at the first mm we freed the previous entry from
- * (though actually we don't notice whether we or coincidence
- * freed the entry). Initialize this start_mm with a hold.
- *
- * A simpler strategy would be to start at the last mm we
- * freed the previous entry from; but that would take less
- * advantage of mmlist ordering (now preserved by swap_out()),
- * which clusters forked address spaces together, most recent
- * child immediately after parent. If we race with dup_mmap(),
- * we very much want to resolve parent before child, otherwise
- * we may miss some entries: using last mm would invert that.
- */
- start_mm = &init_mm;
- atomic_inc(&init_mm.mm_users);
-
- /*
- * Keep on scanning until all entries have gone. Usually,
- * one pass through swap_map is enough, but not necessarily:
- * mmput() removes mm from mmlist before exit_mmap() and its
- * zap_page_range(). That's not too bad, those entries are
- * on their way out, and handled faster there than here.
- * do_munmap() behaves similarly, taking the range out of mm's
- * vma list before zap_page_range(). But unfortunately, when
- * unmapping a part of a vma, it takes the whole out first,
- * then reinserts what's left after (might even reschedule if
- * open() method called) - so swap entries may be invisible
- * to swapoff for a while, then reappear - but that is rare.
- */
- while ((i = find_next_to_unuse(si, i))) {
- /*
- * Get a page for the entry, using the existing swap
- * cache page if there is one. Otherwise, get a clean
- * page and read the swap into it.
- */
- swap_map = &si->swap_map[i];
- entry = SWP_ENTRY(type, i);
- page = read_swap_cache_async(entry);
- if (!page) {
- /*
- * Either swap_duplicate() failed because entry
- * has been freed independently, and will not be
- * reused since sys_swapoff() already disabled
- * allocation from here, or alloc_page() failed.
- */
- if (!*swap_map)
- continue;
- retval = -ENOMEM;
- break;
- }
-
- /*
- * Don't hold on to start_mm if it looks like exiting.
- */
- if (atomic_read(&start_mm->mm_users) == 1) {
- mmput(start_mm);
- start_mm = &init_mm;
- atomic_inc(&init_mm.mm_users);
- }
-
- /*
- * Wait for and lock page. When do_swap_page races with
- * try_to_unuse, do_swap_page can handle the fault much
- * faster than try_to_unuse can locate the entry. This
- * apparently redundant "wait_on_page" lets try_to_unuse
- * defer to do_swap_page in such a case - in some tests,
- * do_swap_page and try_to_unuse repeatedly compete.
- */
- wait_on_page(page);
- lock_page(page);
-
- /*
- * Remove all references to entry, without blocking.
- * Whenever we reach init_mm, there's no address space
- * to search, but use it as a reminder to search shmem.
- */
- swcount = *swap_map;
- if (swcount > 1) {
- flush_page_to_ram(page);
- if (start_mm == &init_mm)
- shmem_unuse(entry, page);
- else
- unuse_process(start_mm, entry, page);
- }
- if (*swap_map > 1) {
- int set_start_mm = (*swap_map >= swcount);
- struct list_head *p = &start_mm->mmlist;
- struct mm_struct *new_start_mm = start_mm;
- struct mm_struct *mm;
-
- spin_lock(&mmlist_lock);
- while (*swap_map > 1 &&
- (p = p->next) != &start_mm->mmlist) {
- mm = list_entry(p, struct mm_struct, mmlist);
- swcount = *swap_map;
- if (mm == &init_mm) {
- set_start_mm = 1;
- shmem_unuse(entry, page);
- } else
- unuse_process(mm, entry, page);
- if (set_start_mm && *swap_map < swcount) {
- new_start_mm = mm;
- set_start_mm = 0;
- }
- }
- atomic_inc(&new_start_mm->mm_users);
- spin_unlock(&mmlist_lock);
- mmput(start_mm);
- start_mm = new_start_mm;
- }
-
- /*
- * How could swap count reach 0x7fff when the maximum
- * pid is 0x7fff, and there's no way to repeat a swap
- * page within an mm (except in shmem, where it's the
- * shared object which takes the reference count)?
- * We believe SWAP_MAP_MAX cannot occur in Linux 2.4.
- *
- * If that's wrong, then we should worry more about
- * exit_mmap() and do_munmap() cases described above:
- * we might be resetting SWAP_MAP_MAX too early here.
- * We know "Undead"s can happen, they're okay, so don't
- * report them; but do report if we reset SWAP_MAP_MAX.
- */
- if (*swap_map == SWAP_MAP_MAX) {
- swap_list_lock();
- swap_device_lock(si);
- nr_swap_pages++;
- *swap_map = 1;
- swap_device_unlock(si);
- swap_list_unlock();
- reset_overflow = 1;
- }
-
- /*
- * If a reference remains (rare), we would like to leave
- * the page in the swap cache; but try_to_swap_out could
- * then re-duplicate the entry once we drop page lock,
- * so we might loop indefinitely; also, that page could
- * not be swapped out to other storage meanwhile. So:
- * delete from cache even if there's another reference,
- * after ensuring that the data has been saved to disk -
- * since if the reference remains (rarer), it will be
- * read from disk into another page. Splitting into two
- * pages would be incorrect if swap supported "shared
- * private" pages, but they are handled by tmpfs files.
- * Note shmem_unuse already deleted its from swap cache.
- */
- swcount = *swap_map;
- if ((swcount > 0) != PageSwapCache(page))
- BUG();
- if ((swcount > 1) && PageDirty(page)) {
- rw_swap_page(WRITE, page);
- lock_page(page);
- }
- if (PageSwapCache(page))
- delete_from_swap_cache(page);
-
- /*
- * So we could skip searching mms once swap count went
- * to 1, we did not mark any present ptes as dirty: must
- * mark page dirty so try_to_swap_out will preserve it.
- */
- SetPageDirty(page);
- UnlockPage(page);
- page_cache_release(page);
-
- /*
- * Make sure that we aren't completely killing
- * interactive performance. Interruptible check on
- * signal_pending() would be nice, but changes the spec?
- */
- if (current->need_resched)
- schedule();
- }
-
- mmput(start_mm);
- if (reset_overflow) {
- printk(KERN_WARNING "swapoff: cleared swap entry overflow\n");
- swap_overflow = 0;
- }
- return retval;
-}
-
-asmlinkage long sys_swapoff(const char * specialfile)
-{
- struct swap_info_struct * p = NULL;
- unsigned short *swap_map;
- struct nameidata nd;
- int i, type, prev;
- int err;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- err = user_path_walk(specialfile, &nd);
- if (err)
- goto out;
-
- lock_kernel();
- prev = -1;
- swap_list_lock();
- for (type = swap_list.head; type >= 0; type = swap_info[type].next) {
- p = swap_info + type;
- if ((p->flags & SWP_WRITEOK) == SWP_WRITEOK) {
- if (p->swap_file == nd.dentry)
- break;
- }
- prev = type;
- }
- err = -EINVAL;
- if (type < 0) {
- swap_list_unlock();
- goto out_dput;
- }
-
- if (prev < 0) {
- swap_list.head = p->next;
- } else {
- swap_info[prev].next = p->next;
- }
- if (type == swap_list.next) {
- /* just pick something that's safe... */
- swap_list.next = swap_list.head;
- }
- nr_swap_pages -= p->pages;
- total_swap_pages -= p->pages;
- p->flags = SWP_USED;
- swap_list_unlock();
- unlock_kernel();
- err = try_to_unuse(type);
- lock_kernel();
- if (err) {
- /* re-insert swap space back into swap_list */
- swap_list_lock();
- for (prev = -1, i = swap_list.head; i >= 0; prev = i, i = swap_info[i].next)
- if (p->prio >= swap_info[i].prio)
- break;
- p->next = i;
- if (prev < 0)
- swap_list.head = swap_list.next = p - swap_info;
- else
- swap_info[prev].next = p - swap_info;
- nr_swap_pages += p->pages;
- total_swap_pages += p->pages;
- p->flags = SWP_WRITEOK;
- swap_list_unlock();
- goto out_dput;
- }
- if (p->swap_device)
- blkdev_put(p->swap_file->d_inode->i_bdev, BDEV_SWAP);
- path_release(&nd);
-
- swap_list_lock();
- swap_device_lock(p);
- nd.mnt = p->swap_vfsmnt;
- nd.dentry = p->swap_file;
- p->swap_vfsmnt = NULL;
- p->swap_file = NULL;
- p->swap_device = 0;
- p->max = 0;
- swap_map = p->swap_map;
- p->swap_map = NULL;
- p->flags = 0;
- swap_device_unlock(p);
- swap_list_unlock();
- vfree(swap_map);
- err = 0;
-
-out_dput:
- unlock_kernel();
- path_release(&nd);
-out:
- return err;
-}
-
-int get_swaparea_info(char *buf)
-{
- char * page = (char *) __get_free_page(GFP_KERNEL);
- struct swap_info_struct *ptr = swap_info;
- int i, j, len = 0, usedswap;
-
- if (!page)
- return -ENOMEM;
-
- len += sprintf(buf, "Filename\t\t\tType\t\tSize\tUsed\tPriority\n");
- for (i = 0 ; i < nr_swapfiles ; i++, ptr++) {
- if ((ptr->flags & SWP_USED) && ptr->swap_map) {
- char * path = d_path(ptr->swap_file, ptr->swap_vfsmnt,
- page, PAGE_SIZE);
-
- len += sprintf(buf + len, "%-31s ", path);
-
- if (!ptr->swap_device)
- len += sprintf(buf + len, "file\t\t");
- else
- len += sprintf(buf + len, "partition\t");
-
- usedswap = 0;
- for (j = 0; j < ptr->max; ++j)
- switch (ptr->swap_map[j]) {
- case SWAP_MAP_BAD:
- case 0:
- continue;
- default:
- usedswap++;
- }
- len += sprintf(buf + len, "%d\t%d\t%d\n", ptr->pages << (PAGE_SHIFT - 10),
- usedswap << (PAGE_SHIFT - 10), ptr->prio);
- }
- }
- free_page((unsigned long) page);
- return len;
-}
-
-int is_swap_partition(kdev_t dev) {
- struct swap_info_struct *ptr = swap_info;
- int i;
-
- for (i = 0 ; i < nr_swapfiles ; i++, ptr++) {
- if (ptr->flags & SWP_USED)
- if (ptr->swap_device == dev)
- return 1;
- }
- return 0;
-}
-
-/*
- * Written 01/25/92 by Simmule Turner, heavily changed by Linus.
- *
- * The swapon system call
- */
-asmlinkage long sys_swapon(const char * specialfile, int swap_flags)
-{
- struct swap_info_struct * p;
- struct nameidata nd;
- struct inode * swap_inode;
- unsigned int type;
- int i, j, prev;
- int error;
- static int least_priority = 0;
- union swap_header *swap_header = 0;
- int swap_header_version;
- int nr_good_pages = 0;
- unsigned long maxpages = 1;
- int swapfilesize;
- struct block_device *bdev = NULL;
- unsigned short *swap_map;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
- lock_kernel();
- swap_list_lock();
- p = swap_info;
- for (type = 0 ; type < nr_swapfiles ; type++,p++)
- if (!(p->flags & SWP_USED))
- break;
- error = -EPERM;
- if (type >= MAX_SWAPFILES) {
- swap_list_unlock();
- goto out;
- }
- if (type >= nr_swapfiles)
- nr_swapfiles = type+1;
- p->flags = SWP_USED;
- p->swap_file = NULL;
- p->swap_vfsmnt = NULL;
- p->swap_device = 0;
- p->swap_map = NULL;
- p->lowest_bit = 0;
- p->highest_bit = 0;
- p->cluster_nr = 0;
- p->sdev_lock = SPIN_LOCK_UNLOCKED;
- p->next = -1;
- if (swap_flags & SWAP_FLAG_PREFER) {
- p->prio =
- (swap_flags & SWAP_FLAG_PRIO_MASK)>>SWAP_FLAG_PRIO_SHIFT;
- } else {
- p->prio = --least_priority;
- }
- swap_list_unlock();
- error = user_path_walk(specialfile, &nd);
- if (error)
- goto bad_swap_2;
-
- p->swap_file = nd.dentry;
- p->swap_vfsmnt = nd.mnt;
- swap_inode = nd.dentry->d_inode;
- error = -EINVAL;
-
- if (S_ISBLK(swap_inode->i_mode)) {
- kdev_t dev = swap_inode->i_rdev;
- struct block_device_operations *bdops;
-
- p->swap_device = dev;
- set_blocksize(dev, PAGE_SIZE);
-
- bd_acquire(swap_inode);
- bdev = swap_inode->i_bdev;
- bdops = devfs_get_ops(devfs_get_handle_from_inode(swap_inode));
- if (bdops) bdev->bd_op = bdops;
-
- error = blkdev_get(bdev, FMODE_READ|FMODE_WRITE, 0, BDEV_SWAP);
- if (error)
- goto bad_swap_2;
- set_blocksize(dev, PAGE_SIZE);
- error = -ENODEV;
- if (!dev || (blk_size[MAJOR(dev)] &&
- !blk_size[MAJOR(dev)][MINOR(dev)]))
- goto bad_swap;
- swapfilesize = 0;
- if (blk_size[MAJOR(dev)])
- swapfilesize = blk_size[MAJOR(dev)][MINOR(dev)]
- >> (PAGE_SHIFT - 10);
- } else if (S_ISREG(swap_inode->i_mode))
- swapfilesize = swap_inode->i_size >> PAGE_SHIFT;
- else
- goto bad_swap;
-
- error = -EBUSY;
- for (i = 0 ; i < nr_swapfiles ; i++) {
- struct swap_info_struct *q = &swap_info[i];
- if (i == type || !q->swap_file)
- continue;
- if (swap_inode->i_mapping == q->swap_file->d_inode->i_mapping)
- goto bad_swap;
- }
-
- swap_header = (void *) __get_free_page(GFP_USER);
- if (!swap_header) {
- printk("Unable to start swapping: out of memory :-)\n");
- error = -ENOMEM;
- goto bad_swap;
- }
-
- lock_page(virt_to_page(swap_header));
- rw_swap_page_nolock(READ, SWP_ENTRY(type,0), (char *) swap_header);
-
- if (!memcmp("SWAP-SPACE",swap_header->magic.magic,10))
- swap_header_version = 1;
- else if (!memcmp("SWAPSPACE2",swap_header->magic.magic,10))
- swap_header_version = 2;
- else {
- printk("Unable to find swap-space signature\n");
- error = -EINVAL;
- goto bad_swap;
- }
-
- switch (swap_header_version) {
- case 1:
- memset(((char *) swap_header)+PAGE_SIZE-10,0,10);
- j = 0;
- p->lowest_bit = 0;
- p->highest_bit = 0;
- for (i = 1 ; i < 8*PAGE_SIZE ; i++) {
- if (test_bit(i,(char *) swap_header)) {
- if (!p->lowest_bit)
- p->lowest_bit = i;
- p->highest_bit = i;
- maxpages = i+1;
- j++;
- }
- }
- nr_good_pages = j;
- p->swap_map = vmalloc(maxpages * sizeof(short));
- if (!p->swap_map) {
- error = -ENOMEM;
- goto bad_swap;
- }
- for (i = 1 ; i < maxpages ; i++) {
- if (test_bit(i,(char *) swap_header))
- p->swap_map[i] = 0;
- else
- p->swap_map[i] = SWAP_MAP_BAD;
- }
- break;
-
- case 2:
- /* Check the swap header's sub-version and the size of
- the swap file and bad block lists */
- if (swap_header->info.version != 1) {
- printk(KERN_WARNING
- "Unable to handle swap header version %d\n",
- swap_header->info.version);
- error = -EINVAL;
- goto bad_swap;
- }
-
- p->lowest_bit = 1;
- maxpages = SWP_OFFSET(SWP_ENTRY(0,~0UL)) - 1;
- if (maxpages > swap_header->info.last_page)
- maxpages = swap_header->info.last_page;
- p->highest_bit = maxpages - 1;
-
- error = -EINVAL;
- if (swap_header->info.nr_badpages > MAX_SWAP_BADPAGES)
- goto bad_swap;
-
- /* OK, set up the swap map and apply the bad block list */
- if (!(p->swap_map = vmalloc(maxpages * sizeof(short)))) {
- error = -ENOMEM;
- goto bad_swap;
- }
-
- error = 0;
- memset(p->swap_map, 0, maxpages * sizeof(short));
- for (i=0; i<swap_header->info.nr_badpages; i++) {
- int page = swap_header->info.badpages[i];
- if (page <= 0 || page >= swap_header->info.last_page)
- error = -EINVAL;
- else
- p->swap_map[page] = SWAP_MAP_BAD;
- }
- nr_good_pages = swap_header->info.last_page -
- swap_header->info.nr_badpages -
- 1 /* header page */;
- if (error)
- goto bad_swap;
- }
-
- if (swapfilesize && maxpages > swapfilesize) {
- printk(KERN_WARNING
- "Swap area shorter than signature indicates\n");
- error = -EINVAL;
- goto bad_swap;
- }
- if (!nr_good_pages) {
- printk(KERN_WARNING "Empty swap-file\n");
- error = -EINVAL;
- goto bad_swap;
- }
- p->swap_map[0] = SWAP_MAP_BAD;
- swap_list_lock();
- swap_device_lock(p);
- p->max = maxpages;
- p->flags = SWP_WRITEOK;
- p->pages = nr_good_pages;
- nr_swap_pages += nr_good_pages;
- total_swap_pages += nr_good_pages;
- printk(KERN_INFO "Adding Swap: %dk swap-space (priority %d)\n",
- nr_good_pages<<(PAGE_SHIFT-10), p->prio);
-
- /* insert swap space into swap_list: */
- prev = -1;
- for (i = swap_list.head; i >= 0; i = swap_info[i].next) {
- if (p->prio >= swap_info[i].prio) {
- break;
- }
- prev = i;
- }
- p->next = i;
- if (prev < 0) {
- swap_list.head = swap_list.next = p - swap_info;
- } else {
- swap_info[prev].next = p - swap_info;
- }
- swap_device_unlock(p);
- swap_list_unlock();
- error = 0;
- goto out;
-bad_swap:
- if (bdev)
- blkdev_put(bdev, BDEV_SWAP);
-bad_swap_2:
- swap_list_lock();
- swap_map = p->swap_map;
- nd.mnt = p->swap_vfsmnt;
- nd.dentry = p->swap_file;
- p->swap_device = 0;
- p->swap_file = NULL;
- p->swap_vfsmnt = NULL;
- p->swap_map = NULL;
- p->flags = 0;
- if (!(swap_flags & SWAP_FLAG_PREFER))
- ++least_priority;
- swap_list_unlock();
- if (swap_map)
- vfree(swap_map);
- path_release(&nd);
-out:
- if (swap_header)
- free_page((long) swap_header);
- unlock_kernel();
- return error;
-}
-
-void si_swapinfo(struct sysinfo *val)
-{
- unsigned int i;
- unsigned long nr_to_be_unused = 0;
-
- swap_list_lock();
- for (i = 0; i < nr_swapfiles; i++) {
- unsigned int j;
- if (swap_info[i].flags != SWP_USED)
- continue;
- for (j = 0; j < swap_info[i].max; ++j) {
- switch (swap_info[i].swap_map[j]) {
- case 0:
- case SWAP_MAP_BAD:
- continue;
- default:
- nr_to_be_unused++;
- }
- }
- }
- val->freeswap = nr_swap_pages + nr_to_be_unused;
- val->totalswap = total_swap_pages + nr_to_be_unused;
- swap_list_unlock();
-}
-
-/*
- * Verify that a swap entry is valid and increment its swap map count.
- *
- * Note: if swap_map[] reaches SWAP_MAP_MAX the entries are treated as
- * "permanent", but will be reclaimed by the next swapoff.
- */
-int swap_duplicate(swp_entry_t entry)
-{
- struct swap_info_struct * p;
- unsigned long offset, type;
- int result = 0;
-
- type = SWP_TYPE(entry);
- if (type >= nr_swapfiles)
- goto bad_file;
- p = type + swap_info;
- offset = SWP_OFFSET(entry);
-
- swap_device_lock(p);
- if (offset < p->max && p->swap_map[offset]) {
- if (p->swap_map[offset] < SWAP_MAP_MAX - 1) {
- p->swap_map[offset]++;
- result = 1;
- } else if (p->swap_map[offset] <= SWAP_MAP_MAX) {
- if (swap_overflow++ < 5)
- printk(KERN_WARNING "swap_dup: swap entry overflow\n");
- p->swap_map[offset] = SWAP_MAP_MAX;
- result = 1;
- }
- }
- swap_device_unlock(p);
-out:
- return result;
-
-bad_file:
- printk(KERN_ERR "swap_dup: %s%08lx\n", Bad_file, entry.val);
- goto out;
-}
-
-/*
- * Page lock needs to be held in all cases to prevent races with
- * swap file deletion.
- */
-int swap_count(struct page *page)
-{
- struct swap_info_struct * p;
- unsigned long offset, type;
- swp_entry_t entry;
- int retval = 0;
-
- entry.val = page->index;
- if (!entry.val)
- goto bad_entry;
- type = SWP_TYPE(entry);
- if (type >= nr_swapfiles)
- goto bad_file;
- p = type + swap_info;
- offset = SWP_OFFSET(entry);
- if (offset >= p->max)
- goto bad_offset;
- if (!p->swap_map[offset])
- goto bad_unused;
- retval = p->swap_map[offset];
-out:
- return retval;
-
-bad_entry:
- printk(KERN_ERR "swap_count: null entry!\n");
- goto out;
-bad_file:
- printk(KERN_ERR "swap_count: %s%08lx\n", Bad_file, entry.val);
- goto out;
-bad_offset:
- printk(KERN_ERR "swap_count: %s%08lx\n", Bad_offset, entry.val);
- goto out;
-bad_unused:
- printk(KERN_ERR "swap_count: %s%08lx\n", Unused_offset, entry.val);
- goto out;
-}
-
-/*
- * Prior swap_duplicate protects against swap device deletion.
- */
-void get_swaphandle_info(swp_entry_t entry, unsigned long *offset,
- kdev_t *dev, struct inode **swapf)
-{
- unsigned long type;
- struct swap_info_struct *p;
-
- type = SWP_TYPE(entry);
- if (type >= nr_swapfiles) {
- printk(KERN_ERR "rw_swap_page: %s%08lx\n", Bad_file, entry.val);
- return;
- }
-
- p = &swap_info[type];
- *offset = SWP_OFFSET(entry);
- if (*offset >= p->max && *offset != 0) {
- printk(KERN_ERR "rw_swap_page: %s%08lx\n", Bad_offset, entry.val);
- return;
- }
- if (p->swap_map && !p->swap_map[*offset]) {
- printk(KERN_ERR "rw_swap_page: %s%08lx\n", Unused_offset, entry.val);
- return;
- }
- if (!(p->flags & SWP_USED)) {
- printk(KERN_ERR "rw_swap_page: %s%08lx\n", Unused_file, entry.val);
- return;
- }
-
- if (p->swap_device) {
- *dev = p->swap_device;
- } else if (p->swap_file) {
- *swapf = p->swap_file->d_inode;
- } else {
- printk(KERN_ERR "rw_swap_page: no swap file or device\n");
- }
- return;
-}
-
-/*
- * swap_device_lock prevents swap_map being freed. Don't grab an extra
- * reference on the swaphandle, it doesn't matter if it becomes unused.
- */
-int valid_swaphandles(swp_entry_t entry, unsigned long *offset)
-{
- int ret = 0, i = 1 << page_cluster;
- unsigned long toff;
- struct swap_info_struct *swapdev = SWP_TYPE(entry) + swap_info;
-
- if (!page_cluster) /* no readahead */
- return 0;
- toff = (SWP_OFFSET(entry) >> page_cluster) << page_cluster;
- if (!toff) /* first page is swap header */
- toff++, i--;
- *offset = toff;
-
- swap_device_lock(swapdev);
- do {
- /* Don't read-ahead past the end of the swap area */
- if (toff >= swapdev->max)
- break;
- /* Don't read in free or bad pages */
- if (!swapdev->swap_map[toff])
- break;
- if (swapdev->swap_map[toff] == SWAP_MAP_BAD)
- break;
- toff++;
- ret++;
- } while (--i);
- swap_device_unlock(swapdev);
- return ret;
-}