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NFSv4.1: use layout driver in global device cache

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pnfs deviceids are unique per server, per layout type.
struct nfs_client is currently used to distinguish deviceids from
different nfs servers, yet these may clash between different layout
types on the same server.  Therefore, use the layout driver associated
with each deviceid at insertion time to look it up, unhash, or
delete it.

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
This commit is contained in:
Benny Halevy
2011-05-24 18:04:02 +03:00
committed by Boaz Harrosh
parent 1be5683b03
commit 35c8bb543c
4 changed files with 23 additions and 16 deletions
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3
fs/nfs/nfs4filelayout.c
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@@ -441,7 +441,8 @@ filelayout_check_layout(struct pnfs_layout_hdr *lo,
}
/* find and reference the deviceid */
d = nfs4_find_get_deviceid(NFS_SERVER(lo->plh_inode)->nfs_client, id);
d = nfs4_find_get_deviceid(NFS_SERVER(lo->plh_inode)->pnfs_curr_ld,
NFS_SERVER(lo->plh_inode)->nfs_client, id);
if (d == NULL) {
dsaddr = get_device_info(lo->plh_inode, id, gfp_flags);
if (dsaddr == NULL)