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Added functions file_cache_{disable,enable}(). They allow to disable

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actual caching in the file cache, i.e. all reads and writes go directly
to the underlying device. The implementation is not quite complete,
since the VM can still add pages to the cache when the file is mmap()ed,
which can lead to inconsistencies.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26779 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ingo Weinhold
2008-08-04 03:15:50 +00:00
parent 2f462cb8e9
commit 7491000f20
6 changed files with 158 additions and 0 deletions
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headers/private/fs_shell/fssh_fs_cache.h
+2
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@@ -88,6 +88,8 @@ extern void fssh_block_cache_put(void *_cache,
extern void * fssh_file_cache_create(fssh_mount_id mountID,
fssh_vnode_id vnodeID, fssh_off_t size);
extern void fssh_file_cache_delete(void *_cacheRef);
extern void fssh_file_cache_enable(void *_cacheRef);
extern fssh_status_t fssh_file_cache_disable(void *_cacheRef);
extern fssh_status_t fssh_file_cache_set_size(void *_cacheRef,
fssh_off_t size);
extern fssh_status_t fssh_file_cache_sync(void *_cache);