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Wiring between mm0 page cache and vfs almost what it should look like.

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This implements the infrastructure for read/write system calls where
file content is first searched in mm0's page cache and then read-in
or written via the vfs read/write functions.
	modified:   tasks/fs0/src/syscalls.c
	modified:   tasks/mm0/include/lib/bit.h
	modified:   tasks/mm0/include/lib/idpool.h
	modified:   tasks/mm0/include/task.h
	modified:   tasks/mm0/include/vm_area.h
	modified:   tasks/mm0/main.c
	modified:   tasks/mm0/src/devzero.c
	modified:   tasks/mm0/src/fault.c
	new file:   tasks/mm0/src/file.c
	modified:   tasks/mm0/src/init.c
	modified:   tasks/mm0/src/lib/bit.c
	modified:   tasks/mm0/src/lib/idpool.c
	modified:   tasks/mm0/src/task.c
This commit is contained in:
Bahadir Balban
2008-02-18 22:26:39 +00:00
parent 0fdc64ba2d
commit d67d6b84a9
13 changed files with 365 additions and 57 deletions
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15
tasks/mm0/src/lib/idpool.c
View File

@@ -61,3 +61,18 @@ int id_del(struct id_pool *pool, int id)
return ret;
}
/* Return a specific id, if available */
int id_get(struct id_pool *pool, int id)
{
int ret;
spin_lock(&pool->lock);
ret = check_and_set_bit(pool->bitmap, id);
spin_unlock(&pool->lock);
if (ret < 0)
return ret;
else
return id;
}