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| author | Fred Isaman <iisaman@netapp.com> | 2011-03-23 13:27:50 +0000 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2011-03-23 15:29:03 -0400 |
| commit | 425eb736cd905181a4dd4dc8d66342a7c7ab2f27 (patch) | |
| tree | 0e6b9288f91532b940e3a62cf50e5397f5e5dafc | |
| parent | c879513e91c9e38957f0d9647d22469f1887e4da (diff) | |
| download | linux-425eb736cd905181a4dd4dc8d66342a7c7ab2f27.tar.gz linux-425eb736cd905181a4dd4dc8d66342a7c7ab2f27.tar.bz2 linux-425eb736cd905181a4dd4dc8d66342a7c7ab2f27.zip | |
NFSv4.1: alloc and free commit_buckets
Create a preallocated list header to hold nfs_pages for each
non-MDS COMMIT destination. Note this is not necessarily each DS,
but is basically each <DS, fh> pair.
Signed-off-by: Fred Isaman <iisaman@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| -rw-r--r-- | fs/nfs/nfs4filelayout.c | 22 | ||||
| -rw-r--r-- | fs/nfs/nfs4filelayout.h | 2 |
2 files changed, 24 insertions, 0 deletions
diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c index 9401afd5650e..03ff80c67c6e 100644 --- a/fs/nfs/nfs4filelayout.c +++ b/fs/nfs/nfs4filelayout.c @@ -503,6 +503,7 @@ filelayout_free_lseg(struct pnfs_layout_segment *lseg) dprintk("--> %s\n", __func__); nfs4_fl_put_deviceid(fl->dsaddr); + kfree(fl->commit_buckets); _filelayout_free_lseg(fl); } @@ -524,6 +525,27 @@ filelayout_alloc_lseg(struct pnfs_layout_hdr *layoutid, _filelayout_free_lseg(fl); return NULL; } + + /* This assumes there is only one IOMODE_RW lseg. What + * we really want to do is have a layout_hdr level + * dictionary of <multipath_list4, fh> keys, each + * associated with a struct list_head, populated by calls + * to filelayout_write_pagelist(). + * */ + if ((!fl->commit_through_mds) && (lgr->range.iomode == IOMODE_RW)) { + int i; + int size = (fl->stripe_type == STRIPE_SPARSE) ? + fl->dsaddr->ds_num : fl->dsaddr->stripe_count; + + fl->commit_buckets = kcalloc(size, sizeof(struct list_head), GFP_KERNEL); + if (!fl->commit_buckets) { + filelayout_free_lseg(&fl->generic_hdr); + return NULL; + } + fl->number_of_buckets = size; + for (i = 0; i < size; i++) + INIT_LIST_HEAD(&fl->commit_buckets[i]); + } return &fl->generic_hdr; } diff --git a/fs/nfs/nfs4filelayout.h b/fs/nfs/nfs4filelayout.h index ee0c907742b5..085a354e0f08 100644 --- a/fs/nfs/nfs4filelayout.h +++ b/fs/nfs/nfs4filelayout.h @@ -79,6 +79,8 @@ struct nfs4_filelayout_segment { struct nfs4_file_layout_dsaddr *dsaddr; /* Point to GETDEVINFO data */ unsigned int num_fh; struct nfs_fh **fh_array; + struct list_head *commit_buckets; /* Sort commits to ds */ + int number_of_buckets; }; static inline struct nfs4_filelayout_segment * |