luck/tmp_suning_uos_patched
1
0
Fork 1
Code Issues Pull Requests Packages Projects Releases Wiki Activity

IB/ipath: Remove ipath_get_user_pages_nocopy()

Browse Source 
It has no callers and is completely dead code.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Roland Dreier 2007-07-17 18:37:43 -07:00
parent da9aec7b62
commit 1743b91710
2 changed files with 0 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/infiniband/hw/ipath/ipath_kernel.h
View File

@ -819,7 +819,6 @@ static inline u64 ipath_mdio_req(int cmd, int dev, int reg, int data)
#define IPATH_MDIO_CTRL_8355_REG_10 0x1D
int ipath_get_user_pages(unsigned long, size_t, struct page **);
int ipath_get_user_pages_nocopy(unsigned long, struct page **);
void ipath_release_user_pages(struct page **, size_t);
void ipath_release_user_pages_on_close(struct page **, size_t);
int ipath_eeprom_read(struct ipath_devdata *, u8, void *, int);

26
drivers/infiniband/hw/ipath/ipath_user_pages.c
View File

@ -171,32 +171,6 @@ int ipath_get_user_pages(unsigned long start_page, size_t num_pages,
return ret;
}
/**
* ipath_get_user_pages_nocopy - lock a single page for I/O and mark shared
* @start_page: the page to lock
* @p: the output page structure
*
* This is similar to ipath_get_user_pages, but it's always one page, and we
* mark the page as locked for I/O, and shared. This is used for the user
* process page that contains the destination address for the rcvhdrq tail
* update, so we need to have the vma. If we don't do this, the page can be
* taken away from us on fork, even if the child never touches it, and then
* the user process never sees the tail register updates.
*/
int ipath_get_user_pages_nocopy(unsigned long page, struct page **p)
{
struct vm_area_struct *vma;
int ret;
down_write(&current->mm->mmap_sem);
ret = __get_user_pages(page, 1, p, &vma);
up_write(&current->mm->mmap_sem);
return ret;
}
void ipath_release_user_pages(struct page **p, size_t num_pages)
{
down_write(&current->mm->mmap_sem);