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NFSv4.1/pnfs Improve the packing of struct pnfs_layout_hdr

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Eliminate a couple of holes in the structure, and move the 2 atomics
into the same cacheline.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Trond Myklebust 2015-08-25 08:41:24 -04:00
parent e3b1df2dbd
commit 82714bd142
1 changed files with 3 additions and 3 deletions
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6
fs/nfs/pnfs.h
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@ -183,15 +183,15 @@ struct pnfs_layoutdriver_type {
struct pnfs_layout_hdr { struct pnfs_layout_hdr {
atomic_t plh_refcount; atomic_t plh_refcount;
atomic_t plh_outstanding; /* number of RPCs out */
struct list_head plh_layouts; /* other client layouts */ struct list_head plh_layouts; /* other client layouts */
struct list_head plh_bulk_destroy; struct list_head plh_bulk_destroy;
struct list_head plh_segs; /* layout segments list */ struct list_head plh_segs; /* layout segments list */
nfs4_stateid plh_stateid;
atomic_t plh_outstanding; /* number of RPCs out */
unsigned long plh_block_lgets; /* block LAYOUTGET if >0 */ unsigned long plh_block_lgets; /* block LAYOUTGET if >0 */
u32 plh_barrier; /* ignore lower seqids */
unsigned long plh_retry_timestamp; unsigned long plh_retry_timestamp;
unsigned long plh_flags; unsigned long plh_flags;
nfs4_stateid plh_stateid;
u32 plh_barrier; /* ignore lower seqids */
enum pnfs_iomode plh_return_iomode; enum pnfs_iomode plh_return_iomode;
loff_t plh_lwb; /* last write byte for layoutcommit */ loff_t plh_lwb; /* last write byte for layoutcommit */
struct rpc_cred *plh_lc_cred; /* layoutcommit cred */ struct rpc_cred *plh_lc_cred; /* layoutcommit cred */