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| author | Trond Myklebust <trond.myklebust@hammerspace.com> | 2021-02-12 16:49:48 -0500 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2021-02-16 16:11:14 -0500 |
| commit | ed7bcdb374d20fab9e9dc36853a6735c047ad1b1 (patch) | |
| tree | a2db953e95a3d23cc6e276c6bd7fe6a1f9967b81 /fs/nfs/write.c | |
| parent | 75cfb200cd081d23eb7eaa68deba9e0ab9320070 (diff) | |
| download | linux-ed7bcdb374d20fab9e9dc36853a6735c047ad1b1.tar.gz linux-ed7bcdb374d20fab9e9dc36853a6735c047ad1b1.tar.bz2 linux-ed7bcdb374d20fab9e9dc36853a6735c047ad1b1.zip | |
NFS: Add support for eager writes
Support eager writing to the server, meaning that we write the data to
cache on the server, and wait for that to complete. This ensures that we
see ENOSPC errors immediately.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs/nfs/write.c')
| -rw-r--r-- | fs/nfs/write.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 6193350356a8..82bdcb982186 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -712,16 +712,23 @@ int nfs_writepages(struct address_space *mapping, struct writeback_control *wbc) { struct inode *inode = mapping->host; struct nfs_pageio_descriptor pgio; - struct nfs_io_completion *ioc; + struct nfs_io_completion *ioc = NULL; + unsigned int mntflags = NFS_SERVER(inode)->flags; + int priority = 0; int err; nfs_inc_stats(inode, NFSIOS_VFSWRITEPAGES); - ioc = nfs_io_completion_alloc(GFP_KERNEL); - if (ioc) - nfs_io_completion_init(ioc, nfs_io_completion_commit, inode); + if (!(mntflags & NFS_MOUNT_WRITE_EAGER) || wbc->for_kupdate || + wbc->for_background || wbc->for_sync || wbc->for_reclaim) { + ioc = nfs_io_completion_alloc(GFP_KERNEL); + if (ioc) + nfs_io_completion_init(ioc, nfs_io_completion_commit, + inode); + priority = wb_priority(wbc); + } - nfs_pageio_init_write(&pgio, inode, wb_priority(wbc), false, + nfs_pageio_init_write(&pgio, inode, priority, false, &nfs_async_write_completion_ops); pgio.pg_io_completion = ioc; err = write_cache_pages(mapping, wbc, nfs_writepages_callback, &pgio); |