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David van Moolenbroek d75faf18d9 libminixfs: add support for memory-mapped holes 
When VM asks a file system to provide a block to satisfy a page fault
on a file memory mapping, the file system previously had no way to
inform VM that the block is a hole, since there is no corresponding
block on the underlying device.  To work around this, MFS and ext2
would actually allocate a block for the hole when asked by VM, which
not only defeats the point of holes in the first place, but also does
not work on read-only file systems.  With this patch, a new libminixfs
call allows the file system to inform VM about holes.  This issue does
raise the question as to whether the VM cache is using the right data
structures, since there are now two places where we have to fake a
device offset.  This will have to be revisited in the future.

The patch changes file systems accordingly, and adds a test to test74.

Change-Id: Ib537d56b3f30a8eb05bc1f63c92b5c7428d18f4c
2015-08-13 13:46:48 +00:00
..
blocktest minix/ changes for arm llvm build 2014-12-03 23:40:56 +01:00
ddekit merge libminlib with libc 2014-08-28 18:49:19 +02:00
ds merge libminlib with libc 2014-08-28 18:49:19 +02:00
fbdtest Move all services to /service 2014-07-31 16:00:31 +02:00
kernel merge libminlib with libc 2014-08-28 18:49:19 +02:00
safecopy merge libminlib with libc 2014-08-28 18:49:19 +02:00
check-install /usr/tests/minix-posix/check-install 2014-08-13 16:42:57 +02:00
common-socket.c Add new tests 80 (TCP) and 81 (UDP) 2015-07-08 09:46:56 +02:00
common-socket.h Add new tests 80 (TCP) and 81 (UDP) 2015-07-08 09:46:56 +02:00
common.c test82: share support functions in common.[ch] for test83 2015-07-22 22:24:22 +02:00
common.h test82: share support functions in common.[ch] for test83 2015-07-22 22:24:22 +02:00
magic.h New sources layout 2014-07-31 16:00:30 +02:00
Makefile libc: add posix_spawn family of functions 2015-07-28 14:18:03 +00:00
Makefile.inc New sources layout 2014-07-31 16:00:30 +02:00
mod.c New sources layout 2014-07-31 16:00:30 +02:00
run libc: add posix_spawn family of functions 2015-07-28 14:18:03 +00:00
t10a.c New sources layout 2014-07-31 16:00:30 +02:00
t11a.c New sources layout 2014-07-31 16:00:30 +02:00
t11b.c New sources layout 2014-07-31 16:00:30 +02:00
t40a.c New sources layout 2014-07-31 16:00:30 +02:00
t40b.c New sources layout 2014-07-31 16:00:30 +02:00
t40c.c New sources layout 2014-07-31 16:00:30 +02:00
t40d.c New sources layout 2014-07-31 16:00:30 +02:00
t40e.c New sources layout 2014-07-31 16:00:30 +02:00
t40f.c New sources layout 2014-07-31 16:00:30 +02:00
t40g.c New sources layout 2014-07-31 16:00:30 +02:00
t60a.c New sources layout 2014-07-31 16:00:30 +02:00
t60b.c New sources layout 2014-07-31 16:00:30 +02:00
t67a.c New sources layout 2014-07-31 16:00:30 +02:00
t67b.c New sources layout 2014-07-31 16:00:30 +02:00
t68a.c New sources layout 2014-07-31 16:00:30 +02:00
t68b.c New sources layout 2014-07-31 16:00:30 +02:00
t84_h_nonexec.sh libc: add posix_spawn family of functions 2015-07-28 14:18:03 +00:00
t84_h_spawn.c libc: add posix_spawn family of functions 2015-07-28 14:18:03 +00:00
t84_h_spawnattr.c libc: add posix_spawn family of functions 2015-07-28 14:18:03 +00:00
test1.c New sources layout 2014-07-31 16:00:30 +02:00
test2.c New sources layout 2014-07-31 16:00:30 +02:00
test3.c New sources layout 2014-07-31 16:00:30 +02:00
test4.c New sources layout 2014-07-31 16:00:30 +02:00
test5.c New sources layout 2014-07-31 16:00:30 +02:00
test6.c New sources layout 2014-07-31 16:00:30 +02:00
test7.c VFS: add support for F_DUPFD_CLOEXEC 2015-07-20 13:55:10 +00:00
test8.c New sources layout 2014-07-31 16:00:30 +02:00
test9.c New sources layout 2014-07-31 16:00:30 +02:00
test10.c New sources layout 2014-07-31 16:00:30 +02:00
test11.c New sources layout 2014-07-31 16:00:30 +02:00
test12.c New sources layout 2014-07-31 16:00:30 +02:00
test13.c New sources layout 2014-07-31 16:00:30 +02:00
test14.c New sources layout 2014-07-31 16:00:30 +02:00
test15.c New sources layout 2014-07-31 16:00:30 +02:00
test16.c New sources layout 2014-07-31 16:00:30 +02:00
test17.c New sources layout 2014-07-31 16:00:30 +02:00
test18.c New sources layout 2014-07-31 16:00:30 +02:00
test19.c New sources layout 2014-07-31 16:00:30 +02:00
test20.c New sources layout 2014-07-31 16:00:30 +02:00
test21.c New sources layout 2014-07-31 16:00:30 +02:00
test22.c New sources layout 2014-07-31 16:00:30 +02:00
test23.c New sources layout 2014-07-31 16:00:30 +02:00
test24.c New sources layout 2014-07-31 16:00:30 +02:00
test25.c New sources layout 2014-07-31 16:00:30 +02:00
test26.c New sources layout 2014-07-31 16:00:30 +02:00
test27.c New sources layout 2014-07-31 16:00:30 +02:00
test28.c New sources layout 2014-07-31 16:00:30 +02:00
test29.c New sources layout 2014-07-31 16:00:30 +02:00
test30.c New sources layout 2014-07-31 16:00:30 +02:00
test31.c New sources layout 2014-07-31 16:00:30 +02:00
test32.c New sources layout 2014-07-31 16:00:30 +02:00
test33.c New sources layout 2014-07-31 16:00:30 +02:00
test34.c tests: fix clang warnings 2014-09-29 16:16:32 +00:00
test35.c tests: fix clang warnings 2014-09-29 16:16:32 +00:00
test36.c New sources layout 2014-07-31 16:00:30 +02:00
test37.c tests: fix clang warnings 2014-09-29 16:16:32 +00:00
test38.c New sources layout 2014-07-31 16:00:30 +02:00
test39.c New sources layout 2014-07-31 16:00:30 +02:00
test40.c New sources layout 2014-07-31 16:00:30 +02:00
test41.c New sources layout 2014-07-31 16:00:30 +02:00
test42.c tests: fix clang warnings 2014-09-29 16:16:32 +00:00
test43.c New sources layout 2014-07-31 16:00:30 +02:00
test44.c New sources layout 2014-07-31 16:00:30 +02:00
test45.c New sources layout 2014-07-31 16:00:30 +02:00
test45.h New sources layout 2014-07-31 16:00:30 +02:00
test46.c tests: fix clang warnings 2014-09-29 16:16:32 +00:00
test47.c New sources layout 2014-07-31 16:00:30 +02:00
test48.c test48: skip some redundant combinations of parameters 2015-07-08 09:32:17 +02:00
test49.c New sources layout 2014-07-31 16:00:30 +02:00
test50.c New sources layout 2014-07-31 16:00:30 +02:00
test51.c tests: fix clang warnings 2014-09-29 16:16:32 +00:00
test52.c New sources layout 2014-07-31 16:00:30 +02:00
test53.c New sources layout 2014-07-31 16:00:30 +02:00
test54.c New sources layout 2014-07-31 16:00:30 +02:00
test55.c New sources layout 2014-07-31 16:00:30 +02:00
test56.c Add new tests 80 (TCP) and 81 (UDP) 2015-07-08 09:46:56 +02:00
test57.c New sources layout 2014-07-31 16:00:30 +02:00
test57loop.S New sources layout 2014-07-31 16:00:30 +02:00
test58.c New sources layout 2014-07-31 16:00:30 +02:00
test59.c test59: fix status type for mthread_join call 2014-08-24 09:22:35 +00:00
test60.c New sources layout 2014-07-31 16:00:30 +02:00
test61.c New sources layout 2014-07-31 16:00:30 +02:00
test62.c New sources layout 2014-07-31 16:00:30 +02:00
test63.c New sources layout 2014-07-31 16:00:30 +02:00
test64.c New sources layout 2014-07-31 16:00:30 +02:00
test65.c New sources layout 2014-07-31 16:00:30 +02:00
test66.c New sources layout 2014-07-31 16:00:30 +02:00
test66expected.h New sources layout 2014-07-31 16:00:30 +02:00
test67.c New sources layout 2014-07-31 16:00:30 +02:00
test68.c VFS: fix error behavior for partial pipe writes 2015-06-05 18:40:57 +00:00
test69.c New sources layout 2014-07-31 16:00:30 +02:00
test70.c New sources layout 2014-07-31 16:00:30 +02:00
test71.c New sources layout 2014-07-31 16:00:30 +02:00
test72.c libminixfs/VM: fix memory-mapped file corruption 2015-08-13 13:46:46 +00:00
test73.c libminixfs: add block I/O routines 2014-09-18 12:46:25 +00:00
test74.c libminixfs: add support for memory-mapped holes 2015-08-13 13:46:48 +00:00
test75.c New sources layout 2014-07-31 16:00:30 +02:00
test76.c Add PTYFS, Unix98 pseudo terminal support 2015-06-23 17:43:46 +00:00
test77.c Add PTYFS, Unix98 pseudo terminal support 2015-06-23 17:43:46 +00:00
test78.c New sources layout 2014-07-31 16:00:30 +02:00
test79.c New sources layout 2014-07-31 16:00:30 +02:00
test80.c tests: resolve new compiler warnings 2015-07-28 14:18:35 +00:00
test81.c tests: resolve new compiler warnings 2015-07-28 14:18:35 +00:00
test82.c test82: share support functions in common.[ch] for test83 2015-07-22 22:24:22 +02:00
test83.c tests: resolve new compiler warnings 2015-07-28 14:18:35 +00:00
test84.c libc: add posix_spawn family of functions 2015-07-28 14:18:03 +00:00
testcache.c New sources layout 2014-07-31 16:00:30 +02:00
testcache.h New sources layout 2014-07-31 16:00:30 +02:00
testinterp.sh New sources layout 2014-07-31 16:00:30 +02:00
testisofs.sh tests: reenable testisofs 2014-09-18 13:01:13 +00:00
testkyua.sh New sources layout 2014-07-31 16:00:30 +02:00
testmfs.sh New sources layout 2014-07-31 16:00:30 +02:00
testrelpol.sh Restart policies: Add testing and ProcFS DB 2014-12-10 23:11:25 +01:00
testsh1.sh Porting uuencode/uudecode from NetBSD 2014-09-08 19:51:28 +02:00
testsh2.sh New sources layout 2014-07-31 16:00:30 +02:00
testvm.c libfsdriver: support mmap on FSes with no device 2014-11-15 11:19:52 +00:00
testvm.conf libminixfs/VM: fix memory-mapped file corruption 2015-08-13 13:46:46 +00:00
testvm.h New sources layout 2014-07-31 16:00:30 +02:00
testvnd.sh Importing bin/sh 2014-08-29 12:56:04 -04:00
tvnd.c New sources layout 2014-07-31 16:00:30 +02:00