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NFS: Don't report ENOSPC write errors twice
Any errors reported by the write() system call need to be cleared from
the file descriptor's error tracking. The current call to nfs_wb_all()
causes the error to be reported, but since it doesn't call
file_check_and_advance_wb_err(), we can end up reporting the same error
a second time when the application calls fsync().
Note that since Linux 4.13, the rule is that EIO may be reported for
write(), but it must be reported by a subsequent fsync(), so let's just
drop reporting it in write.
The check for nfs_ctx_key_to_expire() is just a duplicate to the one
already in nfs_write_end(), so let's drop that too.
Reported-by: ChenXiaoSong <chenxiaosong2@huawei.com>
Fixes: ce368536dd
("nfs: nfs_file_write() should check for writeback errors")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
parent
9641d9bc9b
commit
e6005436f6
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@ -598,18 +598,6 @@ static const struct vm_operations_struct nfs_file_vm_ops = {
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.page_mkwrite = nfs_vm_page_mkwrite,
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.page_mkwrite = nfs_vm_page_mkwrite,
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};
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};
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static int nfs_need_check_write(struct file *filp, struct inode *inode,
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int error)
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{
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struct nfs_open_context *ctx;
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ctx = nfs_file_open_context(filp);
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if (nfs_error_is_fatal_on_server(error) ||
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nfs_ctx_key_to_expire(ctx, inode))
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return 1;
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return 0;
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}
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ssize_t nfs_file_write(struct kiocb *iocb, struct iov_iter *from)
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ssize_t nfs_file_write(struct kiocb *iocb, struct iov_iter *from)
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{
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{
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struct file *file = iocb->ki_filp;
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struct file *file = iocb->ki_filp;
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@ -637,7 +625,7 @@ ssize_t nfs_file_write(struct kiocb *iocb, struct iov_iter *from)
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if (iocb->ki_flags & IOCB_APPEND || iocb->ki_pos > i_size_read(inode)) {
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if (iocb->ki_flags & IOCB_APPEND || iocb->ki_pos > i_size_read(inode)) {
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result = nfs_revalidate_file_size(inode, file);
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result = nfs_revalidate_file_size(inode, file);
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if (result)
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if (result)
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goto out;
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return result;
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}
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}
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nfs_clear_invalid_mapping(file->f_mapping);
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nfs_clear_invalid_mapping(file->f_mapping);
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@ -656,6 +644,7 @@ ssize_t nfs_file_write(struct kiocb *iocb, struct iov_iter *from)
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written = result;
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written = result;
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iocb->ki_pos += written;
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iocb->ki_pos += written;
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nfs_add_stats(inode, NFSIOS_NORMALWRITTENBYTES, written);
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if (mntflags & NFS_MOUNT_WRITE_EAGER) {
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if (mntflags & NFS_MOUNT_WRITE_EAGER) {
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result = filemap_fdatawrite_range(file->f_mapping,
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result = filemap_fdatawrite_range(file->f_mapping,
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@ -673,17 +662,22 @@ ssize_t nfs_file_write(struct kiocb *iocb, struct iov_iter *from)
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}
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}
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result = generic_write_sync(iocb, written);
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result = generic_write_sync(iocb, written);
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if (result < 0)
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if (result < 0)
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goto out;
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return result;
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out:
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/* Return error values */
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/* Return error values */
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error = filemap_check_wb_err(file->f_mapping, since);
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error = filemap_check_wb_err(file->f_mapping, since);
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if (nfs_need_check_write(file, inode, error)) {
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switch (error) {
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int err = nfs_wb_all(inode);
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default:
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if (err < 0)
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break;
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result = err;
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case -EDQUOT:
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case -EFBIG:
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case -ENOSPC:
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nfs_wb_all(inode);
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error = file_check_and_advance_wb_err(file);
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if (error < 0)
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result = error;
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}
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}
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nfs_add_stats(inode, NFSIOS_NORMALWRITTENBYTES, written);
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out:
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return result;
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return result;
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out_swapfile:
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out_swapfile:
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