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authorBoaz Harrosh <bharrosh@panasas.com>2011-05-16 15:26:47 +0300
committerBoaz Harrosh <bharrosh@panasas.com>2011-08-06 19:35:31 -0700
commit85e44df4748670a1a7d8441b2d75843cdebc478a (patch)
treec5bc0cdf7dad56cc6f3a38f99c88f62325a1e029 /fs/exofs/super.c
parente1042ba0991aab80ced34f7dade6ec25f22b4304 (diff)
exofs: Move exofs specific osd operations out of ios.c
ios.c will be moving to an external library, for use by the objects-layout-driver. Remove from it some exofs specific functions. Also g_attr_logical_length is used both by inode.c and ios.c move definition to the later, to keep it independent Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Diffstat (limited to 'fs/exofs/super.c')
-rw-r--r--fs/exofs/super.c68
1 files changed, 65 insertions, 3 deletions
diff --git a/fs/exofs/super.c b/fs/exofs/super.c
index 65fe5debe11..8783f3d33c4 100644
--- a/fs/exofs/super.c
+++ b/fs/exofs/super.c
@@ -40,6 +40,8 @@
#include "exofs.h"
+#define EXOFS_DBGMSG2(M...) do {} while (0)
+
/******************************************************************************
* MOUNT OPTIONS
*****************************************************************************/
@@ -208,10 +210,64 @@ static void destroy_inodecache(void)
}
/******************************************************************************
- * SUPERBLOCK FUNCTIONS
+ * Some osd helpers
*****************************************************************************/
-static const struct super_operations exofs_sops;
-static const struct export_operations exofs_export_ops;
+void exofs_make_credential(u8 cred_a[OSD_CAP_LEN], const struct osd_obj_id *obj)
+{
+ osd_sec_init_nosec_doall_caps(cred_a, obj, false, true);
+}
+
+static int exofs_read_kern(struct osd_dev *od, u8 *cred, struct osd_obj_id *obj,
+ u64 offset, void *p, unsigned length)
+{
+ struct osd_request *or = osd_start_request(od, GFP_KERNEL);
+/* struct osd_sense_info osi = {.key = 0};*/
+ int ret;
+
+ if (unlikely(!or)) {
+ EXOFS_DBGMSG("%s: osd_start_request failed.\n", __func__);
+ return -ENOMEM;
+ }
+ ret = osd_req_read_kern(or, obj, offset, p, length);
+ if (unlikely(ret)) {
+ EXOFS_DBGMSG("%s: osd_req_read_kern failed.\n", __func__);
+ goto out;
+ }
+
+ ret = osd_finalize_request(or, 0, cred, NULL);
+ if (unlikely(ret)) {
+ EXOFS_DBGMSG("Failed to osd_finalize_request() => %d\n", ret);
+ goto out;
+ }
+
+ ret = osd_execute_request(or);
+ if (unlikely(ret))
+ EXOFS_DBGMSG("osd_execute_request() => %d\n", ret);
+ /* osd_req_decode_sense(or, ret); */
+
+out:
+ osd_end_request(or);
+ EXOFS_DBGMSG2("read_kern(0x%llx) offset=0x%llx "
+ "length=0x%llx dev=%p ret=>%d\n",
+ _LLU(obj->id), _LLU(offset), _LLU(length), od, ret);
+ return ret;
+}
+
+unsigned exofs_layout_od_id(struct exofs_layout *layout,
+ osd_id obj_no, unsigned layout_index)
+{
+/* switch (layout->lay_func) {
+ case LAYOUT_MOVING_WINDOW:
+ {*/
+ unsigned dev_mod = obj_no;
+
+ return (layout_index + dev_mod * layout->mirrors_p1) %
+ layout->s_numdevs;
+/* }
+ case LAYOUT_FUNC_IMPLICT:
+ return layout->devs[layout_index];
+ }*/
+}
static const struct osd_attr g_attr_sb_stats = ATTR_DEF(
EXOFS_APAGE_SB_DATA,
@@ -308,6 +364,12 @@ int exofs_sbi_write_stats(struct exofs_sb_info *sbi)
return ret;
}
+/******************************************************************************
+ * SUPERBLOCK FUNCTIONS
+ *****************************************************************************/
+static const struct super_operations exofs_sops;
+static const struct export_operations exofs_export_ops;
+
/*
* Write the superblock to the OSD
*/