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authorBoaz Harrosh <bharrosh@panasas.com>2011-09-28 15:43:09 +0400
committerBoaz Harrosh <bharrosh@panasas.com>2011-10-04 14:13:59 +0400
commitd866d875f68fdeae63df334d291fe138dc636d96 (patch)
tree9606674db2311ab869640526ef245aaa7fbf4ea8 /fs/exofs/ore.c
parenteb507bc18969f63b8968034144fd69706c492516 (diff)
downloadlinux-d866d875f68fdeae63df334d291fe138dc636d96.tar.xz
ore/exofs: Change the type of the devices array (API change)
In the pNFS obj-LD the device table at the layout level needs to point to a device_cache node, where it is possible and likely that many layouts will point to the same device-nodes. In Exofs we have a more orderly structure where we have a single array of devices that repeats twice for a round-robin view of the device table This patch moves to a model that can be used by the pNFS obj-LD where struct ore_components holds an array of ore_dev-pointers. (ore_dev is newly defined and contains a struct osd_dev *od member) Each pointer in the array of pointers will point to a bigger user-defined dev_struct. That can be accessed by use of the container_of macro. In Exofs an __alloc_dev_table() function allocates the ore_dev-pointers array as well as an exofs_dev array, in one allocation and does the addresses dance to set everything pointing correctly. It still keeps the double allocation trick for the inodes round-robin view of the table. The device table is always allocated dynamically, also for the single device case. So it is unconditionally freed at umount. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Diffstat (limited to 'fs/exofs/ore.c')
-rw-r--r--fs/exofs/ore.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/exofs/ore.c b/fs/exofs/ore.c
index c2b0033a724b..a7d79257fc65 100644
--- a/fs/exofs/ore.c
+++ b/fs/exofs/ore.c
@@ -59,7 +59,7 @@ static struct osd_obj_id *_ios_obj(struct ore_io_state *ios, unsigned index)
static struct osd_dev *_ios_od(struct ore_io_state *ios, unsigned index)
{
- return ios->oc->ods[index];
+ return ore_comp_dev(ios->oc, index);
}
int ore_get_rw_state(struct ore_layout *layout, struct ore_components *oc,