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| author | Trond Myklebust <trond.myklebust@primarydata.com> | 2017-04-25 16:56:19 +0200 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2017-04-25 16:56:19 +0200 |
| commit | b3230e80a6d115d2eb50fe3f4794ad04d84766de (patch) | |
| tree | c0b55ff70d1643c37656e44b87d9f18e3256b58f /fs/nfs/filelayout/filelayout.c | |
| parent | NFS: Always wait for I/O completion before unlock (diff) | |
| download | linux-b3230e80a6d115d2eb50fe3f4794ad04d84766de.tar.xz linux-b3230e80a6d115d2eb50fe3f4794ad04d84766de.zip | |
pNFS: Ensure we check layout segment validity in the pg_init() callback
If we have a layout segment cached in pgio->pg_lseg, we should check it
for validity before reusing it in a new RPC request. Otherwise, if we
recoalesce, we can end up looping forever.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs/filelayout/filelayout.c')
| -rw-r--r-- | fs/nfs/filelayout/filelayout.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/nfs/filelayout/filelayout.c b/fs/nfs/filelayout/filelayout.c index acd30baca461..d4174da89302 100644 --- a/fs/nfs/filelayout/filelayout.c +++ b/fs/nfs/filelayout/filelayout.c @@ -933,6 +933,7 @@ static void filelayout_pg_init_read(struct nfs_pageio_descriptor *pgio, struct nfs_page *req) { + pnfs_generic_pg_check_layout(pgio); if (!pgio->pg_lseg) { pgio->pg_lseg = fl_pnfs_update_layout(pgio->pg_inode, req->wb_context, @@ -959,6 +960,7 @@ filelayout_pg_init_write(struct nfs_pageio_descriptor *pgio, struct nfs_commit_info cinfo; int status; + pnfs_generic_pg_check_layout(pgio); if (!pgio->pg_lseg) { pgio->pg_lseg = fl_pnfs_update_layout(pgio->pg_inode, req->wb_context, |