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author | Boaz Harrosh <bharrosh@panasas.com> | 2011-09-28 14:43:09 +0300 |
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committer | Boaz Harrosh <bharrosh@panasas.com> | 2011-10-04 12:13:59 +0200 |
commit | d866d875f68fdeae63df334d291fe138dc636d96 (patch) | |
tree | 9606674db2311ab869640526ef245aaa7fbf4ea8 /fs/exofs/ore.c | |
parent | eb507bc18969f63b8968034144fd69706c492516 (diff) | |
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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.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/exofs/ore.c b/fs/exofs/ore.c index c2b0033..a7d7925 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, |