diff options
| author | Trond Myklebust <trond.myklebust@primarydata.com> | 2015-10-01 17:17:06 -0400 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2015-12-31 15:55:35 -0500 |
| commit | 138a2935dc9783b131d9647c3bddb22ae5c84d77 (patch) | |
| tree | c21379e9e3c162c65ee5a6145e6081baaae1dfd6 /fs/nfs | |
| parent | b20135d0b2431900a3a5395970ffb7e4f3767c8b (diff) | |
NFS: Relax requirements in nfs_flush_incompatible
If two processes share the same credentials and NFSv4 open stateid, then
allow them both to dirty the same page, even if their nfs_open_context
differs.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/internal.h | 6 | ||||
| -rw-r--r-- | fs/nfs/pagelist.c | 6 | ||||
| -rw-r--r-- | fs/nfs/write.c | 3 |
3 files changed, 8 insertions, 7 deletions
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 99a2919047e9..870e2ba7ba49 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -264,6 +264,12 @@ static inline bool nfs_pgio_has_mirroring(struct nfs_pageio_descriptor *desc) return desc->pg_mirror_count > 1; } +static inline bool nfs_match_open_context(const struct nfs_open_context *ctx1, + const struct nfs_open_context *ctx2) +{ + return ctx1->cred == ctx2->cred && ctx1->state == ctx2->state; +} + /* nfs2xdr.c */ extern struct rpc_procinfo nfs_procedures[]; extern int nfs2_decode_dirent(struct xdr_stream *, diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index 452a011ba0d8..c3a78450a239 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -903,12 +903,6 @@ static void nfs_pageio_cleanup_mirroring(struct nfs_pageio_descriptor *pgio) pgio->pg_mirrors_dynamic = NULL; } -static bool nfs_match_open_context(const struct nfs_open_context *ctx1, - const struct nfs_open_context *ctx2) -{ - return ctx1->cred == ctx2->cred && ctx1->state == ctx2->state; -} - static bool nfs_match_lock_context(const struct nfs_lock_context *l1, const struct nfs_lock_context *l2) { diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 0aa8d6f23b4c..2c26e04d9396 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -1130,7 +1130,8 @@ int nfs_flush_incompatible(struct file *file, struct page *page) if (req == NULL) return 0; l_ctx = req->wb_lock_context; - do_flush = req->wb_page != page || req->wb_context != ctx; + do_flush = req->wb_page != page || + !nfs_match_open_context(req->wb_context, ctx); /* for now, flush if more than 1 request in page_group */ do_flush |= req->wb_this_page != req; if (l_ctx && flctx && |