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| author | Juergen Gross <jgross@suse.com> | 2022-02-25 18:05:42 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-03-11 12:13:33 +0300 |
| commit | 9a7fa4be28ac13725e9e344572cced8b215b93c9 (patch) | |
| tree | ac9342346899cb753cb1dcf170803ab969fd3564 /drivers/xen/grant-table.c | |
| parent | a37eb077983e678bece23d4061fe5a6614f41354 (diff) | |
| download | linux-9a7fa4be28ac13725e9e344572cced8b215b93c9.tar.xz | |
xen: remove gnttab_query_foreign_access()
Commit 1dbd11ca75fe664d3e54607547771d021f531f59 upstream.
Remove gnttab_query_foreign_access(), as it is unused and unsafe to
use.
All previous use cases assumed a grant would not be in use after
gnttab_query_foreign_access() returned 0. This information is useless
in best case, as it only refers to a situation in the past, which could
have changed already.
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/xen/grant-table.c')
| -rw-r--r-- | drivers/xen/grant-table.c | 19 |
1 files changed, 0 insertions, 19 deletions
diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c index 92bd6237c911..889ff23e91ea 100644 --- a/drivers/xen/grant-table.c +++ b/drivers/xen/grant-table.c @@ -114,13 +114,6 @@ struct gnttab_ops { * return the frame. */ unsigned long (*end_foreign_transfer_ref)(grant_ref_t ref); - /* - * Query the status of a grant entry. Ref parameter is reference of - * queried grant entry, return value is the status of queried entry. - * Detailed status(writing/reading) can be gotten from the return value - * by bit operations. - */ - int (*query_foreign_access)(grant_ref_t ref); }; struct unmap_refs_callback_data { @@ -255,17 +248,6 @@ int gnttab_grant_foreign_access(domid_t domid, unsigned long frame, } EXPORT_SYMBOL_GPL(gnttab_grant_foreign_access); -static int gnttab_query_foreign_access_v1(grant_ref_t ref) -{ - return gnttab_shared.v1[ref].flags & (GTF_reading|GTF_writing); -} - -int gnttab_query_foreign_access(grant_ref_t ref) -{ - return gnttab_interface->query_foreign_access(ref); -} -EXPORT_SYMBOL_GPL(gnttab_query_foreign_access); - static int gnttab_end_foreign_access_ref_v1(grant_ref_t ref, int readonly) { u16 flags, nflags; @@ -1029,7 +1011,6 @@ static const struct gnttab_ops gnttab_v1_ops = { .update_entry = gnttab_update_entry_v1, .end_foreign_access_ref = gnttab_end_foreign_access_ref_v1, .end_foreign_transfer_ref = gnttab_end_foreign_transfer_ref_v1, - .query_foreign_access = gnttab_query_foreign_access_v1, }; static void gnttab_request_version(void) |