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vm/vm_page.h: Fix trivial '-Wpointer-sign' warning

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pq_vcnt, as a count of real things, has no business being negative.  It is only
ever initialized by a u_int counter.

The warning came from the atomic_add_int() in vm_pagequeue_cnt_add().

Rectify the warning by changing the variable to u_int.  No functional change.

Suggested by:	Clang 3.3
Sponsored by:	EMC / Isilon Storage Division
This commit is contained in:
Conrad Meyer 2016-05-19 17:54:14 +00:00
parent 514a71eba7
commit 5a2e650a36
2 changed files with 3 additions and 3 deletions
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4
sys/vm/vm_page.c
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@ -384,11 +384,11 @@ vm_page_domain_init(struct vm_domain *vmd)
*__DECONST(char **, &vmd->vmd_pagequeues[PQ_INACTIVE].pq_name) =
"vm inactive pagequeue";
*__DECONST(int **, &vmd->vmd_pagequeues[PQ_INACTIVE].pq_vcnt) =
*__DECONST(u_int **, &vmd->vmd_pagequeues[PQ_INACTIVE].pq_vcnt) =
&vm_cnt.v_inactive_count;
*__DECONST(char **, &vmd->vmd_pagequeues[PQ_ACTIVE].pq_name) =
"vm active pagequeue";
*__DECONST(int **, &vmd->vmd_pagequeues[PQ_ACTIVE].pq_vcnt) =
*__DECONST(u_int **, &vmd->vmd_pagequeues[PQ_ACTIVE].pq_vcnt) =
&vm_cnt.v_active_count;
vmd->vmd_page_count = 0;
vmd->vmd_free_count = 0;

2
sys/vm/vm_page.h
View file

@ -215,7 +215,7 @@ struct vm_pagequeue {
struct mtx pq_mutex;
struct pglist pq_pl;
int pq_cnt;
int * const pq_vcnt;
u_int * const pq_vcnt;
const char * const pq_name;
} __aligned(CACHE_LINE_SIZE);