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| author | Scott Mayhew <smayhew@redhat.com> | 2020-08-01 14:10:39 +0300 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@hammerspace.com> | 2020-08-05 06:16:36 +0300 |
| commit | ce368536dd614452407dc31e2449eb84681a06af (patch) | |
| tree | 21c31d963e4da18bd140e27ed5e861eb98a7782b /fs/nfs/file.c | |
| parent | 67dd23f9e6fbaf163431912ef5599c5e0693476c (diff) | |
| download | linux-ce368536dd614452407dc31e2449eb84681a06af.tar.xz | |
nfs: nfs_file_write() should check for writeback errors
The NFS_CONTEXT_ERROR_WRITE flag (as well as the check of said flag) was
removed by commit 6fbda89b257f. The absence of an error check allows
writes to be continually queued up for a server that may no longer be
able to handle them. Fix it by adding an error check using the generic
error reporting functions.
Fixes: 6fbda89b257f ("NFS: Replace custom error reporting mechanism with generic one")
Signed-off-by: Scott Mayhew <smayhew@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'fs/nfs/file.c')
| -rw-r--r-- | fs/nfs/file.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/fs/nfs/file.c b/fs/nfs/file.c index bb244fc39d4b..d42657b86d9b 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -591,12 +591,14 @@ static const struct vm_operations_struct nfs_file_vm_ops = { .page_mkwrite = nfs_vm_page_mkwrite, }; -static int nfs_need_check_write(struct file *filp, struct inode *inode) +static int nfs_need_check_write(struct file *filp, struct inode *inode, + int error) { struct nfs_open_context *ctx; ctx = nfs_file_open_context(filp); - if (nfs_ctx_key_to_expire(ctx, inode)) + if (nfs_error_is_fatal_on_server(error) || + nfs_ctx_key_to_expire(ctx, inode)) return 1; return 0; } @@ -607,6 +609,8 @@ ssize_t nfs_file_write(struct kiocb *iocb, struct iov_iter *from) struct inode *inode = file_inode(file); unsigned long written = 0; ssize_t result; + errseq_t since; + int error; result = nfs_key_timeout_notify(file, inode); if (result) @@ -631,6 +635,7 @@ ssize_t nfs_file_write(struct kiocb *iocb, struct iov_iter *from) if (iocb->ki_pos > i_size_read(inode)) nfs_revalidate_mapping(inode, file->f_mapping); + since = filemap_sample_wb_err(file->f_mapping); nfs_start_io_write(inode); result = generic_write_checks(iocb, from); if (result > 0) { @@ -649,7 +654,8 @@ ssize_t nfs_file_write(struct kiocb *iocb, struct iov_iter *from) goto out; /* Return error values */ - if (nfs_need_check_write(file, inode)) { + error = filemap_check_wb_err(file->f_mapping, since); + if (nfs_need_check_write(file, inode, error)) { int err = nfs_wb_all(inode); if (err < 0) result = err; |