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mm, page_alloc: convert alloc_flags to unsigned

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alloc_flags is a bitmask of flags but it is signed which does not
necessarily generate the best code depending on the compiler.  Even
without an impact, it makes more sense that this be unsigned.

Signed-off-by: Mel Gorman <[email protected]>
Acked-by: Vlastimil Babka <[email protected]>
Cc: Jesper Dangaard Brouer <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Mel Gorman 2016-05-19 17:13:38 -07:00 • committed by Linus Torvalds
commit c603844bdc
5 changed files with 27 additions and 22 deletions
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12
mm/compaction.c
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@ -1313,7 +1313,8 @@ static int compact_finished(struct zone *zone, struct compact_control *cc,
* COMPACT_CONTINUE - If compaction should run now
*/
static unsigned long __compaction_suitable(struct zone *zone, int order,
int alloc_flags, int classzone_idx)
unsigned int alloc_flags,
int classzone_idx)
{
int fragindex;
unsigned long watermark;
@ -1358,7 +1359,8 @@ static unsigned long __compaction_suitable(struct zone *zone, int order,
}
unsigned long compaction_suitable(struct zone *zone, int order,
int alloc_flags, int classzone_idx)
unsigned int alloc_flags,
int classzone_idx)
{
unsigned long ret;
@ -1530,7 +1532,7 @@ out:
static unsigned long compact_zone_order(struct zone *zone, int order,
gfp_t gfp_mask, enum migrate_mode mode, int *contended,
int alloc_flags, int classzone_idx)
unsigned int alloc_flags, int classzone_idx)
{
unsigned long ret;
struct compact_control cc = {
@ -1571,8 +1573,8 @@ int sysctl_extfrag_threshold = 500;
* This is the main entry point for direct page compaction.
*/
unsigned long try_to_compact_pages(gfp_t gfp_mask, unsigned int order,
int alloc_flags, const struct alloc_context *ac,
enum migrate_mode mode, int *contended)
unsigned int alloc_flags, const struct alloc_context *ac,
enum migrate_mode mode, int *contended)
{
int may_enter_fs = gfp_mask & __GFP_FS;
int may_perform_io = gfp_mask & __GFP_IO;