Commit Graph
11 Commits
Author SHA1 Message Date
Axel Dörfler 324fc66b90 Fixed another stupid bug in cache_io(): if one request needed new pages
more than once, the size requested was only correct for the first time.
Added preliminary support for cache modules.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10335 a95241bf-73f2-0310-859d-f6bbb57e9c96
2004-12-01 07:38:27 +00:00
Axel Dörfler 257d99f228 Renamed readwrite() to cache_io(), and readwrite_pages() to pages_io().
While we can tolerate the device driver to ignore the bytes argument when we
read from the device, we cannot do this for writes - now the code actually
takes this into account. Also added a comment about what to do when our own
driver is fixed :)
Implemented file_cache_sync().
file_cache_set_size() now uses vm_cache::virtual_size instead of the now
removed vnode_store::size. Also, it now resizes the vm_cache as well, so
that any no longer used pages are freed.
write_to_cache() now puts all pages in the modified list, so that they
can be written back easily.
Improved debug output.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10203 a95241bf-73f2-0310-859d-f6bbb57e9c96
2004-11-23 03:27:45 +00:00
Axel Dörfler 10b8d84f32 Added empty file_cache_sync().
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10048 a95241bf-73f2-0310-859d-f6bbb57e9c96
2004-11-19 20:24:27 +00:00
Axel Dörfler eb9f0103f8 file_cache_delete() can now safely be used with a NULL pointer.
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9938 a95241bf-73f2-0310-859d-f6bbb57e9c96
2004-11-12 16:46:05 +00:00
Axel Dörfler e4211d820c Fixed another bad bug in the file cache: when one iovec would have to be
divided into several parts, it could happen that overwrite the whole data
portion with data beyond the part that should have been read.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9706 a95241bf-73f2-0310-859d-f6bbb57e9c96
2004-11-01 15:20:27 +00:00
Axel Dörfler 7605ddddf0 Replaced all remaining PAGE_SIZE with B_PAGE_SIZE and "addr" with addr_t.
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9430 a95241bf-73f2-0310-859d-f6bbb57e9c96
2004-10-20 00:19:38 +00:00
Axel Dörfler 57bf060563 Fixed another stupid bug in the file cache: when the first read was a partial
read over two blocks, some memory behind that memory could be trashed.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9188 a95241bf-73f2-0310-859d-f6bbb57e9c96
2004-10-04 21:03:31 +00:00
Axel Dörfler f7bc46254a readwrite() was broken when it had to load more than one missing page at once.
It now prints a warning if the device driver doesn't handle iovecs correctly.
Again, this could lead to very strange behaviour.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9092 a95241bf-73f2-0310-859d-f6bbb57e9c96
2004-09-28 16:30:25 +00:00
Axel Dörfler 2ef444519e Work-around for buggy device drivers: some drivers (including our current
IDE drivers :-)) don't respect the total amount of bytes to be read in the
former readv() (now read_pages()) call. This can potentially fix all sorts
of strange errors in userland :)
Fixed the debug build.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@8938 a95241bf-73f2-0310-859d-f6bbb57e9c96
2004-09-14 17:37:43 +00:00
Axel Dörfler d79751261c Added write support for the cache - it only writes internally right now,
it never writes back dirty pages. Code is not tested!


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@8905 a95241bf-73f2-0310-859d-f6bbb57e9c96
2004-09-10 19:49:46 +00:00
Axel Dörfler f72376a8dd The beginnings of a file cache. Read-only is already working fine; very
basic and with a temporary API.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@8859 a95241bf-73f2-0310-859d-f6bbb57e9c96
2004-09-06 01:23:57 +00:00