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block/nvme: clarify that free_req_queue is protected by q->lock

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Existing users access free_req_queue under q->lock. Document this.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Sergio Lopez <slp@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20200617132201.1832152-6-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2020-06-17 14:21:59 +01:00
parent 1086e95da1
commit a5db74f324
1 changed files with 1 additions and 1 deletions
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block/nvme.c
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@ -57,7 +57,6 @@ typedef struct {
} NVMeRequest;
typedef struct {
CoQueue free_req_queue;
QemuMutex lock;
/* Fields protected by BQL */
@ -65,6 +64,7 @@ typedef struct {
uint8_t *prp_list_pages;
/* Fields protected by @lock */
CoQueue free_req_queue;
NVMeQueue sq, cq;
int cq_phase;
int free_req_head;