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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2007-02-13 09:21:52 -0500
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2007-02-16 10:40:56 -0500
commit930e99bd1320d78c7d8866595e81b8fc7dc8739b (patch)
treee079f35c0aa2b58cf41675c66b7cfa96e6b068f6 /include/scsi
parent8f3334edae93f8b664417f4140d4d9dc9a003fe4 (diff)
[SCSI] tgt: fix the user/kernel ring buffer interface
This patches fixes two bugs in the scsi target infrastructure's user/kernel interface. - It wrongly assumes that the ring buffer size of the interface (64KB) is larger than or equal to the system page size. This patch sets the ring buffer size to PAGE_SIZE if the system page size is larger. - It uses PAGE_SIZE in the header file exported to userspace. This patch removes it. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'include/scsi')
-rw-r--r--include/scsi/scsi_tgt_if.h3
1 files changed, 0 insertions, 3 deletions
diff --git a/include/scsi/scsi_tgt_if.h b/include/scsi/scsi_tgt_if.h
index 46d5e70d7215..07d6e77ae895 100644
--- a/include/scsi/scsi_tgt_if.h
+++ b/include/scsi/scsi_tgt_if.h
@@ -83,8 +83,5 @@ struct tgt_event {
83} __attribute__ ((aligned (sizeof(uint64_t)))); 83} __attribute__ ((aligned (sizeof(uint64_t))));
84 84
85#define TGT_RING_SIZE (1UL << 16) 85#define TGT_RING_SIZE (1UL << 16)
86#define TGT_RING_PAGES (TGT_RING_SIZE >> PAGE_SHIFT)
87#define TGT_EVENT_PER_PAGE (PAGE_SIZE / sizeof(struct tgt_event))
88#define TGT_MAX_EVENTS (TGT_EVENT_PER_PAGE * TGT_RING_PAGES)
89 86
90#endif 87#endif