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| author | Peng Tao <tao.peng@primarydata.com> | 2014-11-10 08:35:35 +0800 |
|---|---|---|
| committer | Tom Haynes <loghyr@primarydata.com> | 2015-02-03 11:06:48 -0800 |
| commit | 48d635f14a544c2b3ca870d2c7349b41160496d2 (patch) | |
| tree | 3482ecc1445a13fb60941213930078da302869ff /fs/nfs/pnfs.c | |
| parent | 47af81f29556a45493e5c87289c3c16ce911096c (diff) | |
| download | linux-48d635f14a544c2b3ca870d2c7349b41160496d2.tar.bz2 | |
nfs: add nfs_pgio_current_mirror helper
Let it return current nfs_pgio_mirror in use depending on pg_mirror_count.
For read, we always use pg_mirrors[0], so this effectively gives us freedom
to use pg_mirror_idx to track the actual mirror to read from through out the
IO stack.
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <loghyr@primarydata.com>
Diffstat (limited to 'fs/nfs/pnfs.c')
| -rw-r--r-- | fs/nfs/pnfs.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index e123cfce54ee..b822b1749643 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -1731,7 +1731,7 @@ static void pnfs_write_through_mds(struct nfs_pageio_descriptor *desc, struct nfs_pgio_header *hdr) { - struct nfs_pgio_mirror *mirror = &desc->pg_mirrors[desc->pg_mirror_idx]; + struct nfs_pgio_mirror *mirror = nfs_pgio_current_mirror(desc); if (!test_and_set_bit(NFS_IOHDR_REDO, &hdr->flags)) { list_splice_tail_init(&hdr->pages, &mirror->pg_list); @@ -1785,7 +1785,7 @@ EXPORT_SYMBOL_GPL(pnfs_writehdr_free); int pnfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc) { - struct nfs_pgio_mirror *mirror = &desc->pg_mirrors[desc->pg_mirror_idx]; + struct nfs_pgio_mirror *mirror = nfs_pgio_current_mirror(desc); struct nfs_pgio_header *hdr; int ret; @@ -1846,8 +1846,7 @@ static void pnfs_read_through_mds(struct nfs_pageio_descriptor *desc, struct nfs_pgio_header *hdr) { - struct nfs_pgio_mirror *mirror = &desc->pg_mirrors[desc->pg_mirror_idx]; - + struct nfs_pgio_mirror *mirror = nfs_pgio_current_mirror(desc); if (!test_and_set_bit(NFS_IOHDR_REDO, &hdr->flags)) { list_splice_tail_init(&hdr->pages, &mirror->pg_list); @@ -1903,7 +1902,7 @@ EXPORT_SYMBOL_GPL(pnfs_readhdr_free); int pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc) { - struct nfs_pgio_mirror *mirror = &desc->pg_mirrors[desc->pg_mirror_idx]; + struct nfs_pgio_mirror *mirror = nfs_pgio_current_mirror(desc); struct nfs_pgio_header *hdr; int ret; |